Psychologist | Clinical Psychology | 34+ years experience

Dr. Colette De Marneffe, PH.D.

4828 West Ln Ste B, Bethesda, Maryland, 20814-6340

About Dr. Colette De Marneffe

Dr. Colette De Marneffe is a psychologist based in Bethesda, Maryland with 34 years of experience in Clinical Psychology. She completed her graduation in 1992. She accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Dr. Colette De Marneffe is 03390 for Clinical Psychology in Maryland. Her current practice location is 4828 West Ln Ste B, Bethesda. Patients can contact her at 301-891-2120. Dr. Colette De Marneffe, PH.D., specializes in Clinical Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1598973356.

Dr. Colette De Marneffe is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Dr. Colette De Marneffe'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. Colette De Marneffe
Specialization Clinical Psychology
Credentials PH.D.
Accepts Medicare Assignment Yes
Experience 34+ years
Graduation Year 1992
Gender Female
Practice Address: 4828 West Ln Ste B,
Bethesda, MD - 20814-6340

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.

PAC ID 7214088244
Enrollment ID I20120120000016
NPI Number1598973356
NPI Enumeration Date: 17 May, 2007
NPI Last Update On: 08 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. Colette De Marneffe are as mentioned below.

License NumberSpecializationStateStatus
03390Clinical Psychology MarylandPrimary

Mailing Address

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

Dr. Colette De Marneffe
19 Lee Ave,
Takoma Park, MD - 20912-4540
Phone: 301-270-2711

Book an Appointment with Dr. Colette De Marneffe

To schedule an appointment, contact Dr. Colette De Marneffe at 4828 West Ln Ste B, Bethesda, Maryland or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. Colette De Marneffe:

Dr. Colette De Marneffe is a psychologist specializing in Clinical Psychology. She is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Dr. Colette De Marneffe has approximately 34 years of experience in Clinical Psychology.

Yes, Dr. Colette De Marneffe accepts Medicare assignment, meaning the provider participates in Medicare and accepts Medicare-approved amounts for eligible services.

Yes, Dr. Colette De Marneffe 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. Colette De Marneffe practices at 4828 West Ln Ste B, Bethesda, Maryland, 20814-6340.

To schedule an appointment with Dr. Colette De Marneffe, please contact the office at 301-891-2120.

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