Gretchen Sinclair, FNP
NPI 1881903649 · Nurse Practitioner · San Antonio, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gretchen Sinclair, FNP is a Nurse Practitioner provider in San Antonio, TX (NPI 1881903649).
Provider details
- NPI number
- 1881903649
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 714323 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
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
- 2010-09-28
- Last updated
- 2014-07-10
Frequently asked questions
- What is Gretchen Sinclair's NPI number?
- Gretchen Sinclair's National Provider Identifier (NPI) is 1881903649, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gretchen Sinclair's specialty?
- Gretchen Sinclair is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Gretchen Sinclair located?
- Gretchen Sinclair's practice location on file with NPPES is 4800 Fredericksburg Rd, San Antonio, TX 78229-3628.
- What is Gretchen Sinclair's phone number?
- The practice phone number listed in the NPPES registry for Gretchen Sinclair is (210) 733-5072.
- Does Gretchen Sinclair accept Medicare?
- Gretchen Sinclair is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gretchen Sinclair's NPI active?
- Yes — Gretchen Sinclair's NPI (1881903649) is active in the NPPES registry as of the last update on 2014-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.