Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Allan Steven Marks, M.D.

Q: What is the NPI number for Allan Marks?

The National Provider Identifier (NPI) for Allan Marks is 1285762021, a Type 1 (individual) record in the CMS NPPES registry.

Pediatrics Physician in San Francisco, CA · enumerated 2007.

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

National Provider Identifier

1285762021

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Registry record

Entity type Individual (Type 1)

Name Dr. Allan Steven Marks

Credential M.D.

Sex Male

Practice address San Francisco, CA, 94107

Phone (415) 231-5333

Fax (415) 231-5332

Enumeration date Mar 1, 2007

Last updated in NPPES Sep 17, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD186103 (OR) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 13045 (HI) Primary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License G45261 (CA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

Where does Allan Marks practice?

The practice location on file with NPPES is in San Francisco, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Allan Marks?

The National Provider Identifier (NPI) for Allan Marks is 1285762021, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-17.