Ernest Williams, MD
Gastroenterology Physician · Oxford, MS
Ernest Williams, MD is a gastroenterology physician with a practice address in Oxford, Mississippi, and NPI 1588623292, issued on Mar 21, 2006. Check the license (Mississippi 17218, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Ernest Williams
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 17218 MS
Self-reported in NPPES; status is on the state search - Practice location
- 1208 Office Park Dr, Oxford, MS 38655
- Phone
- (662) 234-9888
- Enumerated
- Mar 21, 2006
- Entity
- Type 1 · individual
Also registered at 1208 Office Park Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Bridgers, M.D.Gastroenterology Physician1154339414
- Leigh Beth Brown, FNP-BCFamily Nurse Practitioner1689281685
- Bridgett Green, NP-CNurse Practitioner1548633761
- Penneye Holder, CRNACertified Registered Nurse Anesthetist1063492023
- Sarah Morrow, FNP-CFamily Nurse Practitioner1972118701
- Cheryl Sanders, CRNACertified Registered Nurse Anesthetist1427148428
Verify Ernest Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license 17218Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
3.7 times the Medicare Part D claims of the average gastroenterology physician in 2024
3,142 Medicare Part D claims for 859 beneficiaries, against an average of 848 among the 13,066 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Pantoprazole Sodium554 claims
- Famotidine304 claims
- Dicyclomine Hcl211 claims
- Sod Sulf-Potass Sulf-Mag Sulf193 claims
- Omeprazole164 claims
- Glycopyrrolate115 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The Medicare quality score for 2023: 99 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $16,441.61
94 payments, mostly food and beverage; the largest payer was Phathom Pharmaceuticals, Inc.. The 10,593 providers of this specialty with any payment received $4,948.62 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
2 hospital and facility affiliations
- Billings ClinicBillings, MT · Acute Care Hospitals4 of 5 stars
- Gastroenterology Center OF The Midsouth PLLCOxford, MS
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Gastroenterology Physician providers in Mississippi
There are 112 gastroenterology physician records in Mississippi.
Other gastroenterology physician records in Mississippi
- Hans Adams, M.D.Gulfport, MS1194811471
- Stephen Amann, MDTupelo, MS1063471761
- Shayan Amini, MDJackson, MS1588314025
- Mohammad Anwar, M.D.Ocean Springs, MS1568594893
- John Averette, MDTupelo, MS1366477390
- Joseph Bailey, MDAmory, MS1548276520
- Kevin Barker, M.D.Hattiesburg, MS1992790463
- Navin Barot, MDGulfport, MS1376659193
- Kevin Batte, M.D.Oxford, MS1982017521
- Olivia Becker, MDJackson, MS1902591951
Common questions
What is Ernest Williams, MD's NPI number?
Ernest Williams, MD's National Provider Identifier (NPI) is 1588623292, issued on Mar 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ernest Williams, MD located?
The NPPES record lists a practice address at 1208 Office Park Dr, Oxford, MS, 38655. Phone: (662) 234-9888. Providers update this record themselves, so call before visiting.
How can I verify Ernest Williams, MD's license?
NPPES lists Mississippi license number 17218, as entered by the provider. Search the Mississippi State Board of Medical Licensure at https://www.msbml.ms.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ernest Williams, MD prescribe under Medicare Part D?
In 2024, Ernest Williams, MD had 3,142 Medicare Part D claims for 859 beneficiaries; the average among gastroenterology physician prescribers was 848. Part D covers Medicare prescriptions only.
What is Ernest Williams, MD's Medicare quality score?
The 2023 MIPS final score is 99 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.