Thomas B. Williamson, MD
Internal Medicine Physician · Huron, OH
Thomas B. Williamson, MD is an internal medicine physician with a practice address in Huron, Ohio, and NPI 1295774461, issued on Jun 5, 2006. Check the license (Ohio 35-04-3844-W, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Thomas B. Williamson
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 35-04-3844-W OH
Self-reported in NPPES; status is on the state search - Practice location
- 300 Williams St, Huron, OH 44839
- Phone
- (419) 433-5222
- Enumerated
- Jun 5, 2006
- Record last updated
- Sep 11, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (419) 433-8214
- Medicaid ID
- 0472500 OH
- Medicare enrollment
- Enrolled (PECOS I20100727000217); accepts Medicare assignment
- Medical or professional school
- University Of Rochester School Of Medicine And Dentistry, 1977
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,277 in Ohio → Look up another NPI →
Also registered at 300 Williams St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carolyn Stierhoff, MDInternal Medicine Physician1144807009
Verify Thomas B. Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35-04-3844-WCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
7,032 Medicare Part D claims for 559 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 43 claims were for opioids.
Most prescribed
- Atorvastatin Calcium298 claims
- Amlodipine Besylate294 claims
- Levothyroxine Sodium291 claims
- Metformin Hcl267 claims
- Omeprazole264 claims
- Lisinopril254 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.
Industry payments in 2024: $13.34
1 payment: food and beverage; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through one group practice
- North Coast Professional Company, LLCHuron, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas B. Williamson among 5,277 internal medicine physician records in Ohio
Thomas B. Williamson, MD is one of 5,277 internal medicine physician records with a practice address in Ohio. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1977 · median 2006 among the 3,414 with a school on file
- Record last updated2012 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 internal medicine physician records list a practice address in Huron
They are 3 of the 78 NPPES records with a practice address in Huron, and 5,277 internal medicine physician records in Ohio.
All 5,277 in Ohio → Every provider in Huron → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Carolyn Stierhoff, MDHuron, OH 448391144807009
- Thomas Work, D.O.Huron, OH 448391770513020
- Billy Back, MDGreenwich, OH 448371831191444
- James Goudy, MDGalion, OH 448331154301471
- Mihai-Liviu Ursachi, M.D.Galion, OH 448331497747877
- Govardhana Korrapati, M.D.Fostoria, OH 448301962494583
- Komal Masood, M.DFostoria, OH 448301295141455
- Andrew Lee, MDCrestline, OH 448271285611657
Common questions
What is Thomas B. Williamson, MD's NPI number?
Thomas B. Williamson, MD's National Provider Identifier (NPI) is 1295774461, issued on Jun 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas B. Williamson, MD located?
The NPPES record lists a practice address at 300 Williams St, Huron, OH, 44839. Phone: (419) 433-5222. Providers update this record themselves, so call before visiting.
How can I verify Thomas B. Williamson, MD's license?
NPPES lists Ohio license number 35-04-3844-W, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas B. Williamson, MD prescribe under Medicare Part D?
In 2024, Thomas B. Williamson, MD had 7,032 Medicare Part D claims for 559 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.