Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Robert A Williams, MD

Individual provider Diagnostic Radiology Physician · NPI 1073553202

Robert A Williams, MD practises Diagnostic Radiology in Guymon, Oklahoma. Graduated from University of Oklahoma College of Medicine in 1998, 28 years ago. Practices with Shannon Clinic, a 547-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
28
Trained at
University of Oklahoma College of Medicine
Licensed in
OK
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

350 NE 12th St
Guymon, OK 73942-3624 Not confirmed with CMS for 12 years — call before visiting
Phone: (580) 461-1606
Fax: (580) 225-5423
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 23914 (OK)

Record details

NPI number1073553202
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 7, 2006
Last updated in NPPESDecember 23, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF OKLAHOMA COLLEGE OF MEDICINE
Graduated 1998 (28 years in practice)
Group practice Shannon Clinic — 547 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients1,107
Services billed 1,928 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Shannon Clinic

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 547 clinicians in the practice; 12 are shown here.

Other providers in Guymon