Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Paul D Blumenthal, MD

Complex Family Planning Physician in Stanford, CA · enumerated 2006.

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

National Provider Identifier

1336202977

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Registry record

Entity type Individual (Type 1)

Name Paul D Blumenthal

Credential MD

Sex Male

Practice address 300 Pasteur Dr, Stanford, CA, 94305

Phone (650) 723-4000

Enumeration date Dec 18, 2006

Last updated in NPPES Apr 19, 2024

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License G47601 (CA) Secondary

207VC0300X Complex Family Planning Physician Allopathic & Osteopathic Physicians · License G47601 (CA) Primary

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

Other identifiers

Identifier	Type	State	Issuer
1336202977	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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Paul Blumenthal?

Paul Blumenthal is registered in NPPES with the primary taxonomy of Complex Family Planning Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-19.