Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John A. Hamilton, MD

Occupational Medicine Physician in Mobile, AL · enumerated 2007.

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

National Provider Identifier

1275684417

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Registry record

Entity type Individual (Type 1)

Name Dr. John A. Hamilton

Credential MD

Sex Male

Practice address 305 N. Water St., Mobile, AL, 36602

Phone (251) 433-3781

Fax (251) 431-5810

Enumeration date Jan 15, 2007

Last updated in NPPES Apr 16, 2014

Taxonomy & licenses

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License MD22966 (AL) Secondary

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License 22966 (AL) 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
510-45863	Other	AL	BLUE CROSS PROV ID-IMC

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

Where does John Hamilton practice?

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

What is the NPI number for John Hamilton?

The National Provider Identifier (NPI) for John Hamilton is 1275684417, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-04-16.