William Butler, PA
NPI 1588771554 · Medical Physician Assistant · San Antonio, TX
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Butler, PA is a Medical Physician Assistant provider in San Antonio, TX (NPI 1588771554).
Provider details
- NPI number
- 1588771554
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- PA02542 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2006-08-24
- Last updated
- 2009-05-06
Frequently asked questions
- What is William Butler's NPI number?
- William Butler's National Provider Identifier (NPI) is 1588771554, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Butler's specialty?
- William Butler is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Butler located?
- William Butler's practice location on file with NPPES is 4502 Medical Dr, San Antonio, TX 78229-4402.
- What is William Butler's phone number?
- The practice phone number listed in the NPPES registry for William Butler is (210) 257-1400.
- Does William Butler accept Medicare?
- William Butler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Butler's NPI active?
- Yes — William Butler's NPI (1588771554) is active in the NPPES registry as of the last update on 2009-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.