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

Dr. John L Williams, MD

Surgery Physician in Tallahassee, FL · enumerated 2007.

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

National Provider Identifier

1033399423

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. John L Williams

Credential MD

Sex Male

Practice address Tallahassee, FL, 32311

Phone (850) 878-1375

Fax (850) 877-5119

Enumeration date Nov 14, 2007

Last updated in NPPES Nov 14, 2007

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

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License ME0008863 (FL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 Williams practice?

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

What is the NPI number for John Williams?

The National Provider Identifier (NPI) for John Williams is 1033399423, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-14.