Harrison & Feldhausen, P.C., PMHNPBC, PMHCNS, CARNAP, Treatment Center in Olney


Barbara Harrison is a Psychiatric Mental Health Nurse Practitioner, a Certified Advanced Practice Addiction Registered Nurse and a Maryland State approved Substance Abuse Supervisor. Ms. Harrison is Certified in: Cognitive Behavioral Therapy(CBT) and Rational Emotive Behavioral Therapy (REBT). She is a member of the International Nurses Society on Addictions.

Roberta Feldhausen PMHCNS-BC

Roberta Feldhausen is a certified Nurse Psychotherapist. She is a certified Rational Emotive Behavioral Therapist (REBT). Ms. Feldhausen specializes in working with individuals and their families in the treatment of Mental Health, Addictions, and Geropsychiatric illnesses. She holds memberships in the International Nurses Society on Addictions, the American Psychiatric Nurses Association, the American Association of Geriatric Psychiatry.
Take the first step to help. Call Harrison & Feldhausen, P.C. now - (301) 304-1660


  • Years in Practice: 7 Years


  • Sliding Scale: Yes
  • Accepts Insurance: Yes
Accepted Payment Methods: Mastercard, Visa

Accepted Insurance Plans

  • Medicare
Verify your health insurance coverage when you arrange your first visit.

Additional Credentials

  • Certificate: Maryland / 102521
  • Certificate Date: 2011

Harrison & Feldhausen, P.C.'s Groups

DWI Education State Certified

Please Call for specific group meeting times. 6 week group, 2 hour sessions for a total of 12 hours.

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Level 1 Outpatient Addiction Treatment

Please call for group meeting times and to schedule an appointment.

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Family Addiction Education

This is a six week education and support group for family members who are struggling with someone else's addiction.

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  • Alcohol Abuse
  • Addiction
  • Dual Diagnosis


  • Anxiety
  • Behavioral Issues
  • Bipolar Disorder
  • Borderline Personality
  • Coping Skills
  • Depression
  • Drug Abuse
  • Emotional Disturbance
  • Family Conflict
  • Gambling
  • Internet Addiction
  • Self Esteem
  • Substance Abuse
  • Video Game Addiction

Mental Health

  • Elderly Persons Disorders
  • Mood Disorders
  • Personality Disorders
  • Psychosis

Client Focus


  • Adults
  • Elders (65+)

Programs and Services

Treatment Programs

  • Addiction
  • Depression
  • Dual Diagnosis
  • Intervention
  • Substance Abuse

Treatment Approach

Treatment Orientation

  • Cognitive Behavioral (CBT)
  • Family Systems
  • Intervention


  • Individuals
  • Family
  • Group
Last Modified: 07 Sep 2016
Harrison & Feldhausen, P.C., PMHNPBC, PMHCNS, CARNAP, Treatment Center in Olney

Harrison & Feldhausen, P.C.