William Thomsen
NPI 1033409016 · Pediatric Hematology & Oncology Physician · Salem, VA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Thomsen is a Pediatric Hematology & Oncology Physician provider in Salem, VA (NPI 1033409016).
Provider details
- NPI number
- 1033409016
- Entity type
- Individual
- Primary specialty
- Pediatric Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- Yes
- License
- 9757995-1205 (UT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-04-12
- Last updated
- 2021-12-17
- Certified
- 2021-12-17
Frequently asked questions
- What is William Thomsen's NPI number?
- William Thomsen's National Provider Identifier (NPI) is 1033409016, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Thomsen's specialty?
- William Thomsen is listed in the NPPES registry with a primary specialty of Pediatric Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is William Thomsen located?
- William Thomsen's practice location on file with NPPES is 1641 Millwood Dr, Salem, VA 24153-4616.
- What is William Thomsen's phone number?
- The practice phone number listed in the NPPES registry for William Thomsen is (434) 907-3296.
- Does William Thomsen accept Medicare?
- William Thomsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Thomsen's NPI active?
- Yes — William Thomsen's NPI (1033409016) is active in the NPPES registry as of the last update on 2021-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.