Psychologist | General Psychology

Dr. Mary K O'farrell, PH.D.

3000 Connecticut Ave Nw, Suite 214, Washington, District Of Columbia, 20008-2509

About Dr. Mary K O'farrell

Dr. Mary K O'farrell is a psychologist based in Washington, District Of Columbia who is specialized in General Psychology. Active license number of Dr. Mary K O'farrell is 1490 for General Psychology in District Of Columbia. Her current practice location is 3000 Connecticut Ave Nw, Suite 214, Washington. Patients can contact her at 202-232-4189. Dr. Mary K O'farrell, PH.D., specializes in General Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1912105271.

Dr. Mary K O'farrell is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, she performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. She can diagnose and treat mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability by psycheducational evaluation, therapy, remediation, and consultation.

Practice Information

Dr. Mary K O'farrell's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Dr. Mary K O'farrell
Specialization General Psychology
Credentials PH.D.
Gender Female
Practice Address: 3000 Connecticut Ave Nw, Suite 214
Washington, DC - 20008-2509

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1912105271
NPI Enumeration Date: 10 Jul, 2007
NPI Last Update On: 10 Jul, 2007

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for Dr. Mary K O'farrell are as mentioned below.

License NumberSpecializationStateStatus
1490General Psychology District Of ColumbiaPrimary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Dr. Mary K O'farrell
3000 Connecticut Ave Nw, Suite 214
Washington, DC - 20008-2509
Phone: 202-232-4189

Book an Appointment with Dr. Mary K O'farrell

To schedule an appointment, contact Dr. Mary K O'farrell at 3000 Connecticut Ave Nw, Suite 214, Washington, District Of Columbia or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. Mary K O'farrell:

Dr. Mary K O'farrell is a psychologist specializing in General Psychology. She is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, she performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. She can diagnose and treat mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability by psycheducational evaluation, therapy, remediation, and consultation.

Yes, Dr. Mary K O'farrell is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

Dr. Mary K O'farrell practices at 3000 Connecticut Ave Nw, Suite 214, Washington, District Of Columbia, 20008-2509.

To schedule an appointment with Dr. Mary K O'farrell, please contact the office at 202-232-4189.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.