Dr. Thomas B. Williamson, MD
- Medicare services, 2024
- 826
- Medicare patients, 2024
- 240
- Part D claims, 2024
- 6,793
- Publications
- 1
- MIPS score, 2024
- 88
- Practice address
- 1946 Young St, Honolulu, HI 96826
- Practice phone
- Call (808) 335-0499
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kauaʻi Medical Clinic - ʻEleʻele
Urgent Care Center · Honolulu, Hawaii
Find Dr. Williamson's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Thomas B. Williamson is a family medicine physician in Honolulu, Hawaii
Dr. Williamson practices at Kauaʻi Medical Clinic - ʻEleʻele in Honolulu, Hawaii.
Dr. Williamson's NPI, 1497829139, was assigned on November 17, 2006. Dr. Williamson graduated from George Washington University School of Medicine in 1990. Dr. Williamson holds Hawaii license MD-8835.
- NPI
- 1497829139NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991692758
- NPI enumeration date
- November 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (808) 335-0499
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas B. Williamson practices at Kauaʻi Medical Clinic - ʻEleʻele in Honolulu, Hawaii
Dr. Williamson's primary practice is Kauaʻi Medical Clinic - ʻEleʻele, at 1946 Young St, Honolulu, HI 96826. The practice phone is (808) 335-0499.
- Kauaʻi Medical Clinic - ʻEleʻele1946 Young St, Honolulu, HI 96826Phone(808) 335-0499
Source: Dmand AI Affiliation Data
Dr. Thomas B. Williamson is affiliated with 4 sites of care and 1 medical group
Dr. Williamson's primary practice is Kauaʻi Medical Clinic - ʻEleʻele in Honolulu, Hawaii. Dr. Williamson is also affiliated with Wilcox Medical Center. The medical group on file is Kauaʻi Medical Clinic. Dmand AI also links Dr. Williamson to 1 more hospital and 1 home health agency, each named with a free account. Dr. Williamson's employer is on file too: an urgent care center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Thomas B. Williamson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williamson practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kauaʻi Medical Clinic - ʻEleʻele | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas B. Williamson is one of 669 family medicine physicians in Hawaii
Family medicine is Dr. Williamson's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Williamson is licensed in Hawaii.
Specialties and state licenses
- Family medicine, HawaiiPrimary
Family medicine physicians near Dr. Williamson
Counts of family medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Thomas B. Williamson billed Medicare for 826 services in 2024
CMS data shows 826 Medicare services from Dr. Williamson across 8 procedure codes in 2024, for 240 Medicare patients. Medicare paid $54,535 for them. Every service was in an office.
Dr. Williamson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4802024: 57219%
- Other services
- 2023: 1422024: 1506%
- Tests and treatments
- 2023: 1332024: 10422%
Dr. Williamson compared with the Hawaii median for family medicine physicians, 2024
- Dr. Williamson
- Hawaii median
- Medicare services
- 826vs 2183.8 times
- Medicare patients
- 240vs 1062.3 times
- Part D claims
- 6,053vs 50811.9 times
Medians across 610 family medicine physicians in Hawaii with Dmand AI profiles that report each measure.
Dr. Williamson's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Williamson and other family medicine physicians in Hawaii.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas B. Williamson treated 240 Medicare patients in 2024, average age 75
CMS counts 240 Medicare patients who saw Dr. Williamson in 2024. The largest group is 65 to 74, with 114 patients. 65% of them have high blood pressure, and 60% have high cholesterol. 6% are also on Medicaid. Their average risk score is 0.95, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Williamson's median patient age at 70, with 52% women.
Dr. Williamson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Williamson's Medicare patients by sex, 2024
- Women11448%
- Men12653%
Chronic conditions among Dr. Williamson's Medicare patients, 2024
- High blood pressure65%
- High cholesterol60%
- Diabetes30%
- Arthritis25%
- Chronic kidney disease23%
- Heart failure16%
- Ischemic heart disease16%
- Atrial fibrillation15%
Share of Medicare patients with each condition. A patient can have several.
Dr. Williamson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas B. Williamson wrote 6,793 Medicare Part D claims in 2024
In 2024, Dr. Williamson wrote 6,793 Medicare Part D claims for 613 patients. 84% of them were for generic drugs. CMS names the drug for 6,053 of them, across 98 drugs with 11 or more claims each, at $938,001 in total drug cost. In 2023, CMS named 5,871 claims across 98 drugs.
Dr. Williamson's Part D claims by kind of drug, 2024
- Generic5,729 claims84%
- Brand-name985 claims15%
- Other79 claims1%
Dr. Williamson's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Williamson's Part D claims, 2024
- Opioids3%199 of 6,793 claims
- Antibiotics1%92 of 6,793 claims
- Antipsychotics, patients 65 and over0%18 of 6,793 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5,8712024: 6,0533%
Drugs named by CMS: 98 in 2024, 98 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Thomas B. Williamson scored 88 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for Dr. Williamson for performance year 2024, reported as part of a group. Dr. Williamson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Williamson as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Williamson's MIPS scores, performance year 2024
- 88of 100Final score
- 79.9of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 82of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Thomas B. Williamson has 1 publication on record
Dmand AI links 1 paper to Dr. Williamson in 2025. Dr. Williamson's most frequent co-author is Scott L. Friedman, MD.
Dr. Williamson's most frequent co-authors
Recent publications by Dr. Williamson
See who Dr. Williamson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Williamson works with, so you can find a warm path to the right family medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Thomas B. Williamson received $53 in industry payments from 2017 to 2025
CMS Open Payments shows 3 general payments to Dr. Williamson from 3 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Iovance Biotherapeutics, Inc. paid the most, $19.
General payments to Dr. Williamson by program year, 2017 to 2025
Companies that paid Dr. Williamson the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas B. Williamson graduated from George Washington University School of Medicine
Dr. Williamson graduated from George Washington University School of Medicine in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Thomas B. Williamson's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Thomas B. Williamson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Thomas B. Williamson's NPI number?
Dr. Thomas B. Williamson's NPI number is 1497829139. It was assigned on November 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas B. Williamson?
Dr. Thomas B. Williamson is a family medicine physician in Honolulu, Hawaii. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Thomas B. Williamson practice?
Dr. Williamson practices at 1946 Young St, Honolulu, HI 96826. Dr. Williamson's primary practice is Kauaʻi Medical Clinic - ʻEleʻele in Honolulu, Hawaii. Dmand AI also links Dr. Williamson to 1 hospital and 1 home health agency.
What is Dr. Thomas B. Williamson's office phone number?
The practice phone on file for Dr. Williamson is (808) 335-0499.
What is Dr. Thomas B. Williamson's medical license number?
Dr. Williamson holds Hawaii license MD-8835.
Which hospitals is Dr. Thomas B. Williamson affiliated with?
Dr. Williamson is affiliated with Wilcox Medical Center. Dmand AI links Dr. Williamson to 1 more hospital.
What medical group is Dr. Thomas B. Williamson part of?
Dr. Williamson is linked to Kauaʻi Medical Clinic.
Does Dr. Thomas B. Williamson accept Medicare?
Yes. CMS data shows Dr. Williamson billed Medicare for 826 services in 2024, and Dr. Williamson accepts Medicare assignment.
Does Dr. Thomas B. Williamson offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Williamson as offering telehealth services.
What is Dr. Thomas B. Williamson's MIPS score?
Dr. Williamson's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Thomas B. Williamson see?
CMS counts 240 Medicare patients who saw Dr. Williamson in 2024, with an average age of 75.
What services does Dr. Thomas B. Williamson bill to Medicare?
In 2024, Dr. Williamson's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0008).
Where did Dr. Thomas B. Williamson go to medical school?
Dr. Williamson graduated from George Washington University School of Medicine in 1990.
What drugs does Dr. Thomas B. Williamson prescribe most?
In 2024 Medicare Part D data, Dr. Williamson's most prescribed drugs by claims were Losartan Potassium, Atorvastatin Calcium and Amlodipine Besylate.
Has Dr. Thomas B. Williamson received payments from drug or device companies?
CMS Open Payments shows $53 in general payments to Dr. Williamson from 3 companies from 2017 to 2025. The largest total came from Iovance Biotherapeutics, Inc.
How long has Dr. Thomas B. Williamson been practicing?
Dr. Williamson graduated from medical school in 1990, 36 years ago.
Does Dr. Thomas B. Williamson do research?
Dmand AI links 1 publication to Dr. Williamson.
Who does Dr. Thomas B. Williamson publish with?
Dr. Williamson's most frequent co-authors are Scott L. Friedman, MD (1 shared paper).
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