Thomas Williamson, M.D.
NPI 1023429941 · Hematology & Oncology Physician · Winston Salem, NC
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Williamson, M.D. is a Hematology & Oncology Physician provider in Winston Salem, NC (NPI 1023429941).
Provider details
- NPI number
- 1023429941
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 24656 (MS)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
11,240 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 1,636 | $7 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 1,544 | $10 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 1,463 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 866 | $119 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 450 | $105 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 | 422 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Letrozole | 168 | 50 |
| Gabapentin | 97 | 22 |
| Apixabanbrand: Eliquis | 77 | 11 |
| Ibrutinibbrand: Imbruvica | 75 | — |
| Dexamethasone | 71 | 17 |
| Acyclovir | 63 | 15 |
| Lenalidomide | 59 | 12 |
| Hydroxyurea |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,198 across 109 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-05-13
- Last updated
- 2023-09-14
- Certified
- 2021-01-08
Frequently asked questions
- What is Thomas Williamson's NPI number?
- Thomas Williamson's National Provider Identifier (NPI) is 1023429941, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Williamson's specialty?
- Thomas Williamson is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Williamson located?
- Thomas Williamson's practice location on file with NPPES is 1 Medical Center Blvd, Winston Salem, NC 27157-0001.
- What is Thomas Williamson's phone number?
- The practice phone number listed in the NPPES registry for Thomas Williamson is (336) 716-6777.
- Does Thomas Williamson accept Medicare?
- Thomas Williamson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Williamson's NPI active?
- Yes — Thomas Williamson's NPI (1023429941) is active in the NPPES registry as of the last update on 2023-09-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.