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

Said K Mostafavi, M.D.,

Internal Medicine Physician in Los Angeles, CA · enumerated 2005.

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

National Provider Identifier

1639163744

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Registry record

Entity type Individual (Type 1)

Name Said K Mostafavi

Credential M.D.,

Sex Male

Practice address Los Angeles, CA, 90067

Phone (310) 551-1881

Fax (310) 551-2984

Enumeration date Sep 2, 2005

Last updated in NPPES Aug 4, 2021

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

Taxonomy & licenses

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License A43672 (CA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A43672 (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
00A436720	Other	CA	BLUECROSS/BLUESHIELD
00A436721	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 Said Mostafavi?

The National Provider Identifier (NPI) for Said Mostafavi is 1639163744, a Type 1 (individual) record in the CMS NPPES registry.

Where does Said Mostafavi practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-04.