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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

ALEJANDRA CLARK MD A PROFESSIONAL CORPORATION
NPI 1508762659
Psychiatry & Neurology - Psychiatry in Upland, CA

Active since October 15, 2026
820 N MOUNTAIN AVE STE 108, UPLAND, CA 91786(909) 256-4175 Get Directions Write a Review

NPPES record added: October 15, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Alejandra Clark Md A Professional Corporation NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALEJANDRA CLARK MD A PROFESSIONAL CORPORATION (NPI 1508762659) is a healthcare organization registered as a psychiatry in Upland, California and active in the NPI registry since October 2026. The organization lists Alejandra Clark, President, as its authorized official.

NPPES Registry Identity

NPI1508762659
Entity TypeOrganization
Primary Taxonomy2084P0800X
Legal Business NameALEJANDRA CLARK MD A PROFESSIONAL CORPORATION
Location Address820 N MOUNTAIN AVE STE 108Upland, CA 91786-4163
Mailing Address820 N Mountain Ave Ste 108Upland, CA 91786-4163 · (909) 256-4175
Phone(909) 256-4175
Organization SubpartNo
Authorized OfficialAlejandra ClarkPresident · (909) 256-4175
Enumeration DateOctober 15, 2026
NPPES CertifiedOctober 15, 2026
✔ NPI 1508762659 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Definition
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.
820 N MOUNTAIN AVE STE 108, Upland, CA 91786
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Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EDUARDO PINEDA MD, INC
Clinic/Center (Adult Mental Health)
820 N MOUNTAIN AVE STE 108
UPLAND, CA 91786
San Bernardino County (909) 256-4175
ALEJANDRA CLARK M.D
Psychiatry & Neurology (Psychiatry)
820 N MOUNTAIN AVE STE 108
UPLAND, CA 91786
San Bernardino County (909) 749-1415

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alejandra Clark MD A Professional Corporation's NPI number?

The NPI number for Alejandra Clark MD A Professional Corporation is 1508762659. It was assigned to this organization in the NPPES registry on October 15, 2026.

Where is Alejandra Clark MD A Professional Corporation located?

Alejandra Clark MD A Professional Corporation is located at 820 N Mountain Ave Ste 108, Upland, CA 91786. The listed phone number is (909) 256-4175.

What is Alejandra Clark MD A Professional Corporation's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

When was this NPI record last updated?

The NPPES record for Alejandra Clark MD A Professional Corporation was last updated on October 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.