NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gary W. Peer, MD

Internal Medicine Physician in Livermore, CA · enumerated 2006 · practices at Foot and Ankle Coach, PC.

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

National Provider Identifier

1245346956

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Registry record

Entity type Individual (Type 1)
Name Gary W. Peer
Credential MD
Sex Male
Practice address 87 Fenton St Ste 101, Livermore, CA, 94550
Phone (925) 447-1330
Fax (925) 447-0933
Enumeration date Aug 23, 2006
Last updated in NPPES Oct 24, 2007

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G48280 (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
00G482800 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 specialty is Gary Peer?
Gary Peer is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-24.