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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

TANYA MERCHANT
NPI 1457292955
Internal Medicine in San Francisco, CA

Active since April 01, 2026
450 STANYAN ST, SAN FRANCISCO, CA 94117(415) 750-5942(415) 750-5594 Get Directions Write a Review

NPPES record last updated: October 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 13, 2026, Apr 1, 2026 (2 updates tracked since 2026).

About Tanya Merchant NPPES

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

TANYA MERCHANT (NPI 1457292955) is an individual internal medicine provider in San Francisco, California, licensed in California (22656) and active in the NPI registry since April 2026.

NPPES Registry Identity

NPI1457292955
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameTANYA MERCHANT
Location Address450 STANYAN STSan Francisco, CA 94117-1019
Mailing Address450 Stanyan StSan Francisco, CA 94117-1019 · (415) 750-5942 · Fax (415) 750-5594
Phone(415) 750-5942
Fax(415) 750-5594
Sole ProprietorNo
Enumeration DateApril 1, 2026
Last NPPES UpdateOctober 13, 20262 updates tracked since enumeration
NPPES CertifiedOctober 13, 2026
✔ NPI 1457292955 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 22656
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
450 STANYAN ST, San Francisco, CA 94117
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Other Providers at the Same Location NPPES 20

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

JESSICA ESPINO MANGALIAG
Student in an Organized Health Care Education/Training Program
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (415) 750-5942
FIONA PATRICIA MCCUSKER
Physical Medicine & Rehabilitation
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (415) 668-1000
JENNIFER JIMENEZ OTD
Occupational Therapist
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (877) 341-7472
JASON DOUGLAS
Occupational Therapist
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (415) 668-1000
DARIANNE ZIMMER
Student in an Organized Health Care Education/Training Program
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (415) 750-5942
DR. STEPHANIE VON FISCHER SEIKI M.D.
Internal Medicine
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (415) 750-5909
ALEXA POETER
Speech-Language Pathologist
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (415) 722-6965
LEWIS PHILIP SCHENDOWICH MD
Student in an Organized Health Care Education/Training Program
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (415) 750-5942

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 Tanya Merchant's NPI number?

The NPI number for Tanya Merchant is 1457292955. It was assigned to this individual provider in the NPPES registry on April 1, 2026.

Where is Tanya Merchant located?

Tanya Merchant practices at 450 Stanyan St, San Francisco, CA 94117. The listed phone number is (415) 750-5942.

What is Tanya Merchant's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Tanya Merchant was last updated on October 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.