Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael Jefferson, M.D.

Anesthesiology Physician in Glendale, CA · enumerated 2006.

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

National Provider Identifier

1689649469

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael Jefferson

Credential M.D.

Sex Male

Practice address 1509 Wilson Terrace, Glendale, CA, 91206

Phone (818) 409-8000

Fax (818) 546-5632

Enumeration date Feb 23, 2006

Last updated in NPPES Nov 30, 2007

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License G68903 (CA) Primary

207LP2900X Pain Medicine (Anesthesiology) Physician Allopathic & Osteopathic Physicians · License G68903 (CA) Secondary

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
00G689030	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 NPI 1689649469 active?

Yes, as of the latest NPPES snapshot, NPI 1689649469 is active (record last updated 2007-11-30).

How do I verify Michael Jefferson's NPI record?

Cross-check NPI 1689649469 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-30.