William Parkinson, MD
NPI 1457009615 · Internal Medicine Physician · Jbsa- Fort Sam Houston, TX
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Parkinson, MD is a Internal Medicine Physician provider in Jbsa- Fort Sam Houston, TX (NPI 1457009615).
Provider details
- NPI number
- 1457009615
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 0101279958 (VA)
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
4 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
- 2022-03-16
- Last updated
- 2025-06-12
- Certified
- 2025-06-12
Frequently asked questions
- What is William Parkinson's NPI number?
- William Parkinson's National Provider Identifier (NPI) is 1457009615, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Parkinson's specialty?
- William Parkinson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Parkinson located?
- William Parkinson's practice location on file with NPPES is San Antonio Military Medical Center, Mche-Zdm-M, Jbsa- Fort Sam Houston, TX 78234-4504.
- What is William Parkinson's phone number?
- The practice phone number listed in the NPPES registry for William Parkinson is (210) 292-7805.
- Does William Parkinson accept Medicare?
- William Parkinson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Parkinson's NPI active?
- Yes — William Parkinson's NPI (1457009615) is active in the NPPES registry as of the last update on 2025-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.