Photo of Emmanuel Anyanwu, Psychiatric Nurse Practitioner in New Jersey
Emmanuel Anyanwu
Psychiatric Nurse Practitioner, DNP, MSN, PMHNP
Verified Verified
Springfield, NJ 07081
Dr. Emmanuel Anyanwu, DNP, APN-BC, PMHNP-BC is a Doctoral-Prepared and Board-Certified psychiatric mental health nurse practitioner providing a holistic and comprehensive mental health services to clients across all ages. I am registered in NJ and NY. If you are struggling with Depression and Anxiety, Bipolar and Schizophrenia, Personality Disorders, ADHD, PTSD and Substance Use, Dr. Emmanuel is here to help. I have over 15 years clinical background in nursing and psychiatric mental health and substance use. At Sunrise Health, we work with our clients and their families to optimize patient outcomes and improve their quality of life.
Dr. Emmanuel Anyanwu, DNP, APN-BC, PMHNP-BC is a Doctoral-Prepared and Board-Certified psychiatric mental health nurse practitioner providing a holistic and comprehensive mental health services to clients across all ages. I am registered in NJ and NY. If you are struggling with Depression and Anxiety, Bipolar and Schizophrenia, Personality Disorders, ADHD, PTSD and Substance Use, Dr. Emmanuel is here to help. I have over 15 years clinical background in nursing and psychiatric mental health and substance use. At Sunrise Health, we work with our clients and their families to optimize patient outcomes and improve their quality of life.
(908) 373-5789 View (908) 373-5789
Photo of Chowdhury F Azam, Psychiatrist in New Jersey
Chowdhury F Azam
Psychiatrist, MD, MBBS
Verified Verified
I have long experience and experience in clinical areas of treating Mood Disorders, Bipolar, ADHD, PTSD, Substance abuse, Opioid addiction, and Child and Adolescent Psychiatry.
I have long experience and experience in clinical areas of treating Mood Disorders, Bipolar, ADHD, PTSD, Substance abuse, Opioid addiction, and Child and Adolescent Psychiatry.
(732) 538-8780 View (732) 538-8780
Photo of Advanced Professional Healthcare Services, LLC, Psychiatric Nurse Practitioner in New Jersey
Advanced Professional Healthcare Services, LLC
Psychiatric Nurse Practitioner, DNP, APN-BC, PMHNP
Verified Verified
1 Endorsed
Elizabeth, NJ 07208
We specialize in the treatment of Anxiety Disorders, Mood Disorders - Bipolar Depression, Post Traumatic Stress Disorder (PTSD), Obsessive Compulsive Disorders, Psychotic Disorders-Schizophrenia, Eating Disorders, Personality Disorders, Impulse Control and Addiction Disorders, Developmental Disabilities, Attention Deficit Disorders and more.
Our experienced and compassionate professionals put our clients and their mental health care needs first. At Advanced Professional Healthcare, we understand that every client is special and has a different need. We customize our treatment to suit the healthcare needs of our clients in a caring, respectful and confidential environment. We provide comprehensive assessment to assist with the right diagnosis and treatment for you and your family. We discuss your diagnosis with you and offer you treatment choices with medication management, therapy or combination to support your mental health care goals and maximize your recovery.
We specialize in the treatment of Anxiety Disorders, Mood Disorders - Bipolar Depression, Post Traumatic Stress Disorder (PTSD), Obsessive Compulsive Disorders, Psychotic Disorders-Schizophrenia, Eating Disorders, Personality Disorders, Impulse Control and Addiction Disorders, Developmental Disabilities, Attention Deficit Disorders and more.
Our experienced and compassionate professionals put our clients and their mental health care needs first. At Advanced Professional Healthcare, we understand that every client is special and has a different need. We customize our treatment to suit the healthcare needs of our clients in a caring, respectful and confidential environment. We provide comprehensive assessment to assist with the right diagnosis and treatment for you and your family. We discuss your diagnosis with you and offer you treatment choices with medication management, therapy or combination to support your mental health care goals and maximize your recovery.
(908) 676-7929 View (908) 676-7929
Photo of KAL Behavioral Health Inc, Psychiatric Nurse Practitioner in New Jersey
KAL Behavioral Health Inc
Psychiatric Nurse Practitioner, DNP, APN, PMHNP
Verified Verified
Cherry Hill, NJ 08002
Treatment at this center is not limited to anxiety disorders and depression but includes PTSD, ADHD, mood and related bipolar disorders, OCD, and psychotic disorders.
I am Dr Obinna Ezealor, DNP, PMHNP-BC, owner/founder of KAL Behavioral Health Inc. I have an extensive psychiatric experience, having worked for over 12 years in one of the NJ state-established long-term psychiatric hospital and experience in General and Addiction Psychiatry. I also have experience working both in inpatient and outpatient psychiatric settings, and treating clients from various ethnic and cultural groups. I am a highly motivated and organized individual passionate about caring for the mental health and addiction population, and my philosophy is to tailor each client’s care to their need.
Treatment at this center is not limited to anxiety disorders and depression but includes PTSD, ADHD, mood and related bipolar disorders, OCD, and psychotic disorders.
I am Dr Obinna Ezealor, DNP, PMHNP-BC, owner/founder of KAL Behavioral Health Inc. I have an extensive psychiatric experience, having worked for over 12 years in one of the NJ state-established long-term psychiatric hospital and experience in General and Addiction Psychiatry. I also have experience working both in inpatient and outpatient psychiatric settings, and treating clients from various ethnic and cultural groups. I am a highly motivated and organized individual passionate about caring for the mental health and addiction population, and my philosophy is to tailor each client’s care to their need.
(856) 644-1897 View (856) 644-1897
Photo of Family Psychiatry and Therapy, Psychiatric Nurse Practitioner in New Jersey
Family Psychiatry and Therapy
Psychiatric Nurse Practitioner, DNP, PMHNP
Verified Verified
Paramus, NJ 07652  (Online Only)
Dr. Christopher Hannon is a Board Certified Psychiatric and Mental Health Nurse Practitioner. He obtained his Doctor of Nursing Practice degree from the University of Louisville. His training covers mental health treatment across the lifespan including psychopharmacological management of psychiatric conditions and a host of therapeutic modalities. Areas of particular interest include trauma/PTSD, depression/anxiety, substance use disorders, as well as stigma around mental illness and in general.
Dr. Christopher Hannon is a Board Certified Psychiatric and Mental Health Nurse Practitioner. He obtained his Doctor of Nursing Practice degree from the University of Louisville. His training covers mental health treatment across the lifespan including psychopharmacological management of psychiatric conditions and a host of therapeutic modalities. Areas of particular interest include trauma/PTSD, depression/anxiety, substance use disorders, as well as stigma around mental illness and in general.
(973) 221-8577 View (973) 221-8577
Photo of Dr. Obinna Ezealor, Psychiatric Nurse Practitioner in New Jersey
Dr. Obinna Ezealor
Psychiatric Nurse Practitioner, DNP, APN, PMHNP
Verified Verified
Toms River, NJ 08753
Treatment at this center is not limited to anxiety disorders and depression but includes PTSD, ADHD, mood and related bipolar disorders, OCD, and psychotic disorders.
I am Dr Obinna Ezealor, DNP, a Board Certified Psychiatric Mental Health Nurse Practitioner (PMHNP). I have an extensive psychiatric experience, having worked for over 12 years in one of the NJ state-established long-term psychiatric hospital and experience in General and Addiction Psychiatry. I also have experience working both in inpatient and outpatient psychiatric settings, and treating clients from various ethnic and cultural groups. I am a highly motivated and organized individual passionate about caring for the mental health and addiction population, and my philosophy is to tailor each client’s care to their need.
Treatment at this center is not limited to anxiety disorders and depression but includes PTSD, ADHD, mood and related bipolar disorders, OCD, and psychotic disorders.
I am Dr Obinna Ezealor, DNP, a Board Certified Psychiatric Mental Health Nurse Practitioner (PMHNP). I have an extensive psychiatric experience, having worked for over 12 years in one of the NJ state-established long-term psychiatric hospital and experience in General and Addiction Psychiatry. I also have experience working both in inpatient and outpatient psychiatric settings, and treating clients from various ethnic and cultural groups. I am a highly motivated and organized individual passionate about caring for the mental health and addiction population, and my philosophy is to tailor each client’s care to their need.
(732) 641-4655 View (732) 641-4655
Photo of Victory Psych Consultation Services, Psychiatric Nurse Practitioner in New Jersey
Victory Psych Consultation Services
Psychiatric Nurse Practitioner, PMHNPBC, MA
Verified Verified
Blackwood, NJ 08012
We specialize in caring for the most common psychiatric conditions that include; Depression, Insomnia, Anxiety, Panic disorder, Bipolar Disorder, PTSD, OCD, ADD/ADHD, Trauma-focused treatment, Substance Abuse, & Dual Diagnosis.
I am a Board-Certified Advanced Psychiatric Nurse Practitioner (PMHNP-BC). My work experiences, since June 2021, include providing proficient psychiatric assessment, diagnosing mental health conditions, medication management, hospital psychiatric liaison consultation, treating diverse psychiatric disorders across the life span, and providing collaborative care. I have over twenty-five years’ experience of psychiatric care as an RN, managing patients with mental health crises, and caring for clients in both short and long-term settings. My professional strengths include use of evidence-based treatment approach.
We specialize in caring for the most common psychiatric conditions that include; Depression, Insomnia, Anxiety, Panic disorder, Bipolar Disorder, PTSD, OCD, ADD/ADHD, Trauma-focused treatment, Substance Abuse, & Dual Diagnosis.
I am a Board-Certified Advanced Psychiatric Nurse Practitioner (PMHNP-BC). My work experiences, since June 2021, include providing proficient psychiatric assessment, diagnosing mental health conditions, medication management, hospital psychiatric liaison consultation, treating diverse psychiatric disorders across the life span, and providing collaborative care. I have over twenty-five years’ experience of psychiatric care as an RN, managing patients with mental health crises, and caring for clients in both short and long-term settings. My professional strengths include use of evidence-based treatment approach.
(856) 475-6213 View (856) 475-6213
Photo of Marcel Kaganovskaya, Psychiatric Nurse Practitioner in New Jersey
Marcel Kaganovskaya
Psychiatric Nurse Practitioner, DNP, PMHNP, FNP
Verified Verified
4 Endorsed
Montclair, NJ 07043
As a Psychiatric Mental Health Nurse Practitioner and Family Nurse Practitioner I focus on giving you the tools to achieve the best version of yourself. Times may be hard, but I am here to help. I enjoy working with various communities such as LGBTQI+ & see patients of all ages. I assist clients with Anxiety, Depression, Grief, Mood Disorders, Obsessive Compulsive Disorder (OCD), Attention- Deficit/Hyperactive Disorders (ADHD), Post-Traumatic Stress Disorder (PTSD), daily stress and other mental health needs. I accept most insurances in NY & NJ. Feel free to make an appointment today & visit my website at: www.mindfulcognition.com
As a Psychiatric Mental Health Nurse Practitioner and Family Nurse Practitioner I focus on giving you the tools to achieve the best version of yourself. Times may be hard, but I am here to help. I enjoy working with various communities such as LGBTQI+ & see patients of all ages. I assist clients with Anxiety, Depression, Grief, Mood Disorders, Obsessive Compulsive Disorder (OCD), Attention- Deficit/Hyperactive Disorders (ADHD), Post-Traumatic Stress Disorder (PTSD), daily stress and other mental health needs. I accept most insurances in NY & NJ. Feel free to make an appointment today & visit my website at: www.mindfulcognition.com
(973) 545-7125 View (973) 545-7125
Photo of Akinlabi Sanusi, Psychiatrist in New Jersey
Akinlabi Sanusi
Psychiatrist, MD, MPH
Verified Verified
Rahway, NJ 07065
My special areas of experience include Depression, Anxiety, PTSD, and Bipolar disorder.
I am a Board Certified Psychiatrist committed to providing comprehensive and compassionate care to patients. I completed a residency training in General and Adult Psychiatry at Richmond University Medical Center, Staten Island, New York, an affiliate program of the Mount Sinai Icahn School of Medicine, New York. My treatment approach is based on the understanding that every individual is unique in their experience and needs. After a careful assessment of your symptoms, I will work with you in creating the treatment plan that suits you best.
My special areas of experience include Depression, Anxiety, PTSD, and Bipolar disorder.
I am a Board Certified Psychiatrist committed to providing comprehensive and compassionate care to patients. I completed a residency training in General and Adult Psychiatry at Richmond University Medical Center, Staten Island, New York, an affiliate program of the Mount Sinai Icahn School of Medicine, New York. My treatment approach is based on the understanding that every individual is unique in their experience and needs. After a careful assessment of your symptoms, I will work with you in creating the treatment plan that suits you best.
(848) 206-3679 View (848) 206-3679
Photo of Steven Jay Wruble, Psychiatrist in New Jersey
Steven Jay Wruble
Psychiatrist, MD
Verified Verified
Ridgewood, NJ 07450
I work with both children and adults with ADHD, mood & anxiety disorders along with PTSD and other effects of trauma.
Here at the Venn Center, we offer patients a unique therapeutic experience. I conduct psychiatric evaluations and assessments, as well as provide both individual and group psychotherapy to clients of all ages. I also offer pharmacotherapy and medication management when appropriate. That being said, 25% of my patients are not on any medication since I employ non-medicinal interventions that help remediate psychiatric symptoms whenever possible. Offering these complementary services allows the clients I work with to feel empowered in their desire for change toward a healthier way of being.
I work with both children and adults with ADHD, mood & anxiety disorders along with PTSD and other effects of trauma.
Here at the Venn Center, we offer patients a unique therapeutic experience. I conduct psychiatric evaluations and assessments, as well as provide both individual and group psychotherapy to clients of all ages. I also offer pharmacotherapy and medication management when appropriate. That being said, 25% of my patients are not on any medication since I employ non-medicinal interventions that help remediate psychiatric symptoms whenever possible. Offering these complementary services allows the clients I work with to feel empowered in their desire for change toward a healthier way of being.
(201) 870-0910 View (201) 870-0910
Photo of Gagandeep Singh, MD, LLC, Psychiatrist in New Jersey
Gagandeep Singh, MD, LLC
Psychiatrist, MD
Verified Verified
1 Endorsed
Freehold, NJ 07728
The practice of Child and Adolescent Psychiatry, as well as Adult Psychiatry, is as exciting as it is varied. This specialty is truly one of the last bastions in modern medicine that allows the practitioner to 'connect' with the patient, and one where the value of the patient's input is not underestimated. My clinical interests include childhood and adolescent depression, other mood disorders, ADHD, child and adolescent anxiety disorders such as OCD, and post traumatic stress disorder. I also work with adults on all of the above issues. I look forward to helping you!
The practice of Child and Adolescent Psychiatry, as well as Adult Psychiatry, is as exciting as it is varied. This specialty is truly one of the last bastions in modern medicine that allows the practitioner to 'connect' with the patient, and one where the value of the patient's input is not underestimated. My clinical interests include childhood and adolescent depression, other mood disorders, ADHD, child and adolescent anxiety disorders such as OCD, and post traumatic stress disorder. I also work with adults on all of the above issues. I look forward to helping you!
(609) 644-2978 View (609) 644-2978
Photo of Marc Cantillon, Psychiatrist in New Jersey
Marc Cantillon
Psychiatrist, MD, FAPA, FANA
Verified Verified
2 Endorsed
Livingston, NJ 07039
Chinese herbs, marijuana , neurofeedback, post-partum depressiontreats patients with addiction, anxiety disorders, mood disorders, PTSD.
Sadness, ADD, addiction, relationships, other anguish? No matter what pain you bear, there is hope, with care, scientific evidence, and if needed legal help. For every problem, there are solutions: I have witnessed personal change, growth at any age. For children: identity and learning; for adults work/other responsibilities, or staying active and fully enjoying the wisdom of a mature life. Together we identify the issue(s), talking support CBT therapy and/or medication including natural complementary, exercises, work coaching. For fees, I work flexibly with those patients who have out of network coverage so they are reimbursed.
Chinese herbs, marijuana , neurofeedback, post-partum depressiontreats patients with addiction, anxiety disorders, mood disorders, PTSD.
Sadness, ADD, addiction, relationships, other anguish? No matter what pain you bear, there is hope, with care, scientific evidence, and if needed legal help. For every problem, there are solutions: I have witnessed personal change, growth at any age. For children: identity and learning; for adults work/other responsibilities, or staying active and fully enjoying the wisdom of a mature life. Together we identify the issue(s), talking support CBT therapy and/or medication including natural complementary, exercises, work coaching. For fees, I work flexibly with those patients who have out of network coverage so they are reimbursed.
(973) 870-0599 View (973) 870-0599
Photo of Garden Psych, Psychiatrist in New Jersey
Garden Psych
Psychiatrist, MD
Verified Verified
Princeton, NJ 08540
Do you have a busy life? Do you wish for you and your family to be as successful as possible? Garden Psych is a mental health practice with focus on telepsychiatry. The advantage of Garden Psych is using telemedicine to take less time off school or work. We are open on WEEKDAY EVENINGS and WEEKENDS! We have helped thousands of adults and children become more successful in their lives. Our award winning team of experts can help you do the same!
Do you have a busy life? Do you wish for you and your family to be as successful as possible? Garden Psych is a mental health practice with focus on telepsychiatry. The advantage of Garden Psych is using telemedicine to take less time off school or work. We are open on WEEKDAY EVENINGS and WEEKENDS! We have helped thousands of adults and children become more successful in their lives. Our award winning team of experts can help you do the same!
(732) 392-7233 View (732) 392-7233
Photo of Garden Psych, Psychiatrist in New Jersey
Garden Psych
Psychiatrist, MD
Verified Verified
Princeton, NJ 08540
Do you have a busy life? Do you wish for you and your family to be as successful as possible? Garden Psych is a mental health practice with focus on telepsychiatry. The advantage of Garden Psych is using telemedicine to take less time off school or work. We are open on WEEKDAY EVENINGS and WEEKENDS! We have helped thousands of adults and children become more successful in their lives. Our award winning team of experts can help you do the same!
Do you have a busy life? Do you wish for you and your family to be as successful as possible? Garden Psych is a mental health practice with focus on telepsychiatry. The advantage of Garden Psych is using telemedicine to take less time off school or work. We are open on WEEKDAY EVENINGS and WEEKENDS! We have helped thousands of adults and children become more successful in their lives. Our award winning team of experts can help you do the same!
(609) 293-2697 View (609) 293-2697
Photo of Zindadil Gandhi, Psychiatrist in New Jersey
Zindadil Gandhi
Psychiatrist, MD
Verified Verified
Marlton, NJ 08053
Anxiety, Depression, Anger, Irritability, Guilt, Feeling of lack of control, Inability to pay attention, Sleeplessness are few of the many reasons that keep us from feeling happy. When experienced on daily basis, these can significantly interfere with our performance and relationships. We wish to be happy, to perform at our best. When these experiences are due to a psychiatric condition, it warrants appropriate treatment. I am a Board Certified Child, Adolescent and Adult Psychiatrist. I practice Evidence Based Psychiatry to treat multiple psychiatric and behavioral conditions in Children, Teenagers and Adults.
Anxiety, Depression, Anger, Irritability, Guilt, Feeling of lack of control, Inability to pay attention, Sleeplessness are few of the many reasons that keep us from feeling happy. When experienced on daily basis, these can significantly interfere with our performance and relationships. We wish to be happy, to perform at our best. When these experiences are due to a psychiatric condition, it warrants appropriate treatment. I am a Board Certified Child, Adolescent and Adult Psychiatrist. I practice Evidence Based Psychiatry to treat multiple psychiatric and behavioral conditions in Children, Teenagers and Adults.
(856) 367-6833 View (856) 367-6833
Photo of David Vining Holbrook, Psychiatrist in New Jersey
David Vining Holbrook
Psychiatrist, MD
Verified Verified
Lebanon, NJ 08833
I like to think my practice offers something for everyone. I am a child, adolescent, and adult psychiatrist, so I can prescribe medications, but I am also a therapist. Many patients like the idea of their psychopharmacologist also being their therapist, because it means that I understand my patients as whole persons, and can minimize the amount of medication necessary. In some cases problems can be addressed with therapy alone, by helping patients identify and manage their emotions. For patients who prefer to work with someone else as therapist, I can function solely as the psychopharmacologist.
I like to think my practice offers something for everyone. I am a child, adolescent, and adult psychiatrist, so I can prescribe medications, but I am also a therapist. Many patients like the idea of their psychopharmacologist also being their therapist, because it means that I understand my patients as whole persons, and can minimize the amount of medication necessary. In some cases problems can be addressed with therapy alone, by helping patients identify and manage their emotions. For patients who prefer to work with someone else as therapist, I can function solely as the psychopharmacologist.
(908) 364-5823 View (908) 364-5823
Photo of Alex Strauss, Psychiatrist in New Jersey
Alex Strauss
Psychiatrist, MD
Verified Verified
8 Endorsed
Marlton, NJ 08053
I am board certified in both Adult psychiatry and Child & Adolescent psychiatry. I have expertise in the use of customized and collaborative therapeutic approaches including individual therapy, CBT, sports psychiatry, supportive therapy and family therapy. I complete a very detailed assessment in order to provide the most appropriate care and treatment plan. As a physician, I also recognize that at times medications are indicated in the recovery process. When appropriate, I will work with you on personalized medication management.
I am board certified in both Adult psychiatry and Child & Adolescent psychiatry. I have expertise in the use of customized and collaborative therapeutic approaches including individual therapy, CBT, sports psychiatry, supportive therapy and family therapy. I complete a very detailed assessment in order to provide the most appropriate care and treatment plan. As a physician, I also recognize that at times medications are indicated in the recovery process. When appropriate, I will work with you on personalized medication management.
(856) 481-3477 x3004 View (856) 481-3477 x3004
Photo of Rehman Madraswala, Psychiatrist in New Jersey
Rehman Madraswala
Psychiatrist, MD
Verified Verified
Scotch Plains, NJ 07076
I am dedicated to providing personalized and quality psychiatric care to help clients live more fulfilling lives. I use an integrated approach encompassing nutrition, supplements, exercise, sleep, psychotherapy, and only if necessary, medication. My child, adolescent, and adult psychiatry training was completed at Rutgers Robert Wood Johnson Medical School where I continue to serve as a Clinical Assistant Professor.
I am dedicated to providing personalized and quality psychiatric care to help clients live more fulfilling lives. I use an integrated approach encompassing nutrition, supplements, exercise, sleep, psychotherapy, and only if necessary, medication. My child, adolescent, and adult psychiatry training was completed at Rutgers Robert Wood Johnson Medical School where I continue to serve as a Clinical Assistant Professor.
(844) 608-4617 View (844) 608-4617
Photo of Iconichealth LLC, Psychiatric Nurse Practitioner in New Jersey
Iconichealth LLC
Psychiatric Nurse Practitioner, MSN, PMHNP, APN
Verified Verified
Ewing, NJ 08618
Olasumbo Joseph Oladeru (RN, BSN, PMHNP-BC) is a licensed advanced nurse practitioner who specializes in psychiatric mental health. A graduate of Monmouth University and Immaculata University, Joseph is experienced in providing treatment for addictions and psychiatric disorders including depression, anxiety, bipolar, schizophrenia, attention-deficit hyperactivity disorder and opioid addictions. He is also certified in Medication Assisted Treatment. Joseph has devoted his life to providing professional care that is ethical, accessible and compassionate. With more than 23 years of healthcare and nursing experience, Joseph is driven
Olasumbo Joseph Oladeru (RN, BSN, PMHNP-BC) is a licensed advanced nurse practitioner who specializes in psychiatric mental health. A graduate of Monmouth University and Immaculata University, Joseph is experienced in providing treatment for addictions and psychiatric disorders including depression, anxiety, bipolar, schizophrenia, attention-deficit hyperactivity disorder and opioid addictions. He is also certified in Medication Assisted Treatment. Joseph has devoted his life to providing professional care that is ethical, accessible and compassionate. With more than 23 years of healthcare and nursing experience, Joseph is driven
(609) 245-5069 View (609) 245-5069
Photo of Musaddiq Tariq, Psychiatrist in New Jersey
Musaddiq Tariq
Psychiatrist, MD
Verified Verified
Hackensack, NJ 07601
My job as a psychiatrist is centered on your recovery so you can engage fully with this wonderful life and leave your mental health struggles behind. I specialize in medication management for mood problems, anger management and panic disorders. My approach to therapy combines my characteristics as an individual who is compassionate, charismatic, non-judgmental – with years of experience and effective listening skills.
My job as a psychiatrist is centered on your recovery so you can engage fully with this wonderful life and leave your mental health struggles behind. I specialize in medication management for mood problems, anger management and panic disorders. My approach to therapy combines my characteristics as an individual who is compassionate, charismatic, non-judgmental – with years of experience and effective listening skills.
(973) 313-5839 View (973) 313-5839