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Jay Gershow, M.D. , Inc

Q: What is the NPI number for Jay Gershow, M.D. , Inc?

The NPI for Jay Gershow, M.D. , Inc is 1821255696, a Type 2 (organization) record in the CMS NPPES registry.

Hematology & Oncology Physician in San Francisco, CA · enumerated 2008 · authorized official Jay Gershow, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1821255696

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Registry record

Entity type Organization (Type 2)

Legal business name Jay Gershow, M.D. , Inc

Practice address 2300 Sutter St, Suite 203, San Francisco, CA, 94115

Phone (415) 346-7223

Fax (415) 346-1449

Enumeration date May 20, 2008

Last updated in NPPES May 20, 2008

Taxonomy & classification

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Jay Gershow

Title President

Phone (415) 346-7223

Other identifiers

Identifier	Type	State	Issuer
0000G57360	Medicaid	CA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Jay Gershow, M.D. , Inc?

The NPI for Jay Gershow, M.D. , Inc is 1821255696, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Jay Gershow, M.D. , Inc?

NPPES lists Jay Gershow (President) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-20.