Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert Henry Williams, MD

Internal Medicine Physician in Chattanooga, TN · enumerated 2005.

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

National Provider Identifier

1487631073

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert Henry Williams

Credential MD

Sex Male

Practice address 605 Glenwood Dr, Suite 300, Chattanooga, TN, 37404

Phone (423) 495-2690

Fax (423) 495-2698

Enumeration date Dec 27, 2005

Last updated in NPPES Jan 15, 2009

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 12150 (TN) 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

Is NPI 1487631073 active?

Yes, as of the latest NPPES snapshot, NPI 1487631073 is active (record last updated 2009-01-15).

How do I verify Robert Williams's NPI record?

Cross-check NPI 1487631073 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 2009-01-15.