Thomas B. Williamson, M.D.
Family Medicine Physician · Eleele, HI
Thomas B. Williamson, M.D. is a family medicine physician with a practice address in Eleele, Hawaii, and NPI 1497829139, issued on Nov 17, 2006. Check the license (Hawaii MD-8835, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Thomas B. Williamson
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD-8835 HI
Self-reported in NPPES; status is on the state search - Practice location
- 4382 Waialo RD, Eleele, HI 96705
- Phone
- (808) 335-0499
- Enumerated
- Nov 17, 2006
- Record last updated
- Mar 27, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (808) 335-0496
- Medicare enrollment
- Enrolled (PECOS I20041215000236); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1990
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Verify Thomas B. Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD-8835Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% more Medicare Part D claims than the average family medicine physician in 2024
6,793 Medicare Part D claims for 613 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 199 claims were for opioids.
Most prescribed
- Losartan Potassium559 claims
- Atorvastatin Calcium465 claims
- Amlodipine Besylate424 claims
- Metoprolol Succinate235 claims
- Jardiance203 claims
- Lisinopril178 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 practice group's MIPS final score for 2023 (Medicare payment program): 61.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Kauai Medical ClinicLihue, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
2 family medicine physician records list a practice address in Eleele
They are 2 of the 15 NPPES records with a practice address in Eleele, and 730 family medicine physician records in Hawaii.
All 2 in Eleele → All 730 in Hawaii → Every provider in Eleele →
Other family medicine physician records in Hawaii
- Jenifer Aaronson, M.D.Kamuela, HI1053607119
- Sharita Abbott, M.D.Lahaina, HI1336295633
- David Abelson, MDKahului, HI1336196690
- Alex Aberin, MDPapaikou, HI1992717854
- Danielle Dawn Acacio, MDJbphh, HI1023643749
- Christina Adams, M.D.Waianae, HI1215132915
- Alice Adee, MDHilo, HI1376638734
- Adam Adler, MDHilo, HI1053568923
- Lauren Adler, NPKailua, HI1881358638
- Angelica Agapito, MDEwa Beach, HI1578084505
Common questions
What is Thomas B. Williamson, M.D.'s NPI number?
Thomas B. Williamson, M.D.'s National Provider Identifier (NPI) is 1497829139, issued on Nov 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas B. Williamson, M.D. located?
The NPPES record lists a practice address at 4382 Waialo RD, Eleele, HI, 96705. Phone: (808) 335-0499. Providers update this record themselves, so call before visiting.
How can I verify Thomas B. Williamson, M.D.'s license?
NPPES lists Hawaii license number MD-8835, as entered by the provider. Search the Hawaii Medical Board at https://cca.hawaii.gov/pvl/boards/medical/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas B. Williamson, M.D. prescribe under Medicare Part D?
In 2024, Thomas B. Williamson, M.D. had 6,793 Medicare Part D claims for 613 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Thomas B. Williamson, M.D.'s MIPS final score?
The 2023 MIPS final score is 61.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.