Tish Williams, P.A.
NPI 1538266556 · Physician Assistant · San Antonio, TX
Enrolled with Medicare as Order and Referring Only - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tish Williams, P.A. is a Physician Assistant provider in San Antonio, TX (NPI 1538266556).
Provider details
- NPI number
- 1538266556
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Female
- Sole proprietor
- No
- License
- PA10322 (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
- 2006-09-20
- Last updated
- 2025-12-21
- Certified
- 2025-12-21
Frequently asked questions
- What is Tish Williams's NPI number?
- Tish Williams's National Provider Identifier (NPI) is 1538266556, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tish Williams's specialty?
- Tish Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tish Williams located?
- Tish Williams's practice location on file with NPPES is 7400 Merton Minter St, San Antonio, TX 78229-4404.
- What is Tish Williams's phone number?
- The practice phone number listed in the NPPES registry for Tish Williams is (210) 617-5300.
- Does Tish Williams accept Medicare?
- Tish Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tish Williams's NPI active?
- Yes — Tish Williams's NPI (1538266556) is active in the NPPES registry as of the last update on 2025-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.