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

Rex B Williams, MD

Individual provider Pain Medicine (Anesthesiology) Physician · NPI 1821034596

Rex B Williams, MD is a Pain Management in Starkville, Mississippi. Graduated from Mississippi Medical College in 2001, 25 years ago. Practices with Russellville Hospital Inc, a 68-clinician group and works from 3 locations. Licensed in Florida and Mississippi.

Years since qualifying
25
Trained at
Mississippi Medical College
Licensed in
FL, MS
In the registry since
2006
Specialties on file
2
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

107 Doctors Park
Starkville, MS 39759-2174
Phone: (662) 615-3751
Fax: (662) 615-3754
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 120 Stone Creek Blvd, Flowood, MS 39232-8205 — (601) 420-2040
  • 400 Hospital Rd, Starkville, MS 39759-2163 — (662) 323-4230

Specialties & licences

Pain Medicine (Anesthesiology) Physician (primary) Taxonomy 207LP2900X · Licence 19128 (MS)
Pain Medicine (Anesthesiology) Physician Taxonomy 207LP2900X · Licence ME92922 (FL)

Record details

NPI number1821034596
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 21, 2006
Last updated in NPPESOctober 6, 2025
Certification dateOctober 6, 2025

Medicare enrollment

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

Medicare specialtyPAIN MANAGEMENT
Also practisesANESTHESIOLOGY
Medical schoolMISSISSIPPI MEDICAL COLLEGE
Graduated 2001 (25 years in practice)
Group practice Russellville Hospital Inc. — 68 clinicians
Accepts Medicare assignment Not indicated
Practice locations4 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 patients925
Services billed 23,731 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $563 29 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Russellville Hospital Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 68 clinicians in the practice; 12 are shown here.