William Major, M.D.
NPI 1437193182 · Hematology & Oncology Physician · Winchester, VA
William Major, M.D. is a Hematology & Oncology Physician provider in Winchester, VA (NPI 1437193182).
Provider details
- NPI number
- 1437193182
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 0101040514 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 1870 Amherst StreetSuite FWinchester, VA 22601Phone: (540) 662-1108
Registry dates
- Enumerated
- 2006-06-15
- Last updated
- 2018-02-28
Frequently asked questions
- What is William Major's NPI number?
- William Major's National Provider Identifier (NPI) is 1437193182, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Major's specialty?
- William Major is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is William Major located?
- William Major's practice location on file with NPPES is 400 Campus Blvd Ste 100, Winchester, VA 22601-6906.
- What is William Major's phone number?
- The practice phone number listed in the NPPES registry for William Major is (540) 662-1108.
- Is William Major's NPI active?
- Yes — William Major's NPI (1437193182) is active in the NPPES registry as of the last update on 2018-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.