NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert A Williams, M.D.

Diagnostic Radiology Physician in Guymon, OK · enumerated 2006.

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

National Provider Identifier

1073553202

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Robert A Williams
Credential M.D.
Sex Male
Practice address 350 Ne 12th St, Guymon, OK, 73942
Fax (580) 225-5423
Enumeration date Jun 7, 2006
Last updated in NPPES Dec 23, 2013

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 23914 (OK) 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
P00165591 Other OK RAILRAOD MEDICARE
200039390A Medicaid OK -

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

How do I verify Robert Williams's NPI record?
Cross-check NPI 1073553202 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1073553202 active?
Yes, as of the latest NPPES snapshot, NPI 1073553202 is active (record last updated 2013-12-23).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-12-23.