Maryssa St. Clair, FNP-C
NPI 1811878242 · Nurse Practitioner · San Antonio, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maryssa St. Clair, FNP-C is a Nurse Practitioner provider in San Antonio, TX (NPI 1811878242).
Provider details
- NPI number
- 1811878242
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 1212936 (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
Under 1 yr in 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
- 2025-09-11
- Last updated
- 2025-09-11
- Certified
- 2025-08-22
Frequently asked questions
- What is Maryssa St. Clair's NPI number?
- Maryssa St. Clair's National Provider Identifier (NPI) is 1811878242, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maryssa St. Clair's specialty?
- Maryssa St. Clair is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Maryssa St. Clair located?
- Maryssa St. Clair's practice location on file with NPPES is 22315 White Doe Pass, San Antonio, TX 78255-2410.
- What is Maryssa St. Clair's phone number?
- The practice phone number listed in the NPPES registry for Maryssa St. Clair is (361) 800-3679.
- Does Maryssa St. Clair accept Medicare?
- Maryssa St. Clair is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maryssa St. Clair's NPI active?
- Yes — Maryssa St. Clair's NPI (1811878242) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.