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Bay Area Radiologists, A Medical Group

Diagnostic Radiology Physician in San Francisco, CA · enumerated 2006 · authorized official Frank Mainzer, President.

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

National Provider Identifier

1942254198

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Registry record

Entity type Organization (Type 2)
Legal business name Bay Area Radiologists, A Medical Group
Practice address 900 Hyde St, San Francisco, CA, 94109
Phone (415) 353-6390
Fax (415) 353-6396
Enumeration date May 20, 2006
Last updated in NPPES Feb 22, 2008

Taxonomy & classification

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Frank Mainzer
Title President
Phone (415) 750-5770

Other identifiers

Identifier Type State Issuer
CR1199 Other - RAILROAD MEDICARE PIN
GR0013000 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.

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Frequently asked questions

What is the NPI number for Bay Area Radiologists, A Medical Group?
The NPI for Bay Area Radiologists, A Medical Group is 1942254198, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Bay Area Radiologists, A Medical Group?
NPPES lists Frank Mainzer (President) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-22.