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

Dr. James Earl Pennington, M.D.

Infectious Disease Physician in Lafayette, CA · enumerated 2013.

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

National Provider Identifier

1184962144

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Registry record

Entity type Individual (Type 1)

Name Dr. James Earl Pennington

Credential M.D.

Sex Male

Practice address Lafayette, CA, 94549

Phone (925) 899-5922

Fax (925) 283-7876

Enumeration date Jan 26, 2013

Last updated in NPPES Jan 26, 2013

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

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License G59543 (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
G59543	Other	CA	PHYSICIAN AND SURGEON

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 James Pennington?

The National Provider Identifier (NPI) for James Pennington is 1184962144, a Type 1 (individual) record in the CMS NPPES registry.

Where does James Pennington practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-26.