JOHN J. CLARK MD – NPI #1538859269
Psychiatry & Neurology
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
JOHN CLARK is a psychiatry & neurologist located in WASHINGTON, DC. NPPES has assigned the NPI number 1538859269 to JOHN CLARK on May 08, 2023. It is a Type-1 NPI, indicating this NPI number is associated with an individual. The primary taxonomy selected by this provider is 2084P0800X from the Health Care Provider Taxonomy code set, which is classified as Psychiatry & Neurology, specializing in Psychiatry
The NPI profile was last updated on Jul 01, 2025. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for JOHN CLARK below.
NPI Profile for
JOHN J. CLARK
(more than 3 years ago)
WASHINGTON, DC 20037-1540 Phone: (202) 741-2900 Fax:
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A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.
| Taxonomy Classification / Specialization | State | License |
|---|---|---|
| 2084P0800X - Psychiatry & Neurology / Psychiatry (Primary) |
DC | MD600004346 |
The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.