Sylvia Leal-Castanon, MD
NPI 1841307915 · Pediatrics Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sylvia Leal-Castanon, MD is a Pediatrics Physician provider in San Antonio, TX (NPI 1841307915).
Provider details
- NPI number
- 1841307915
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- J5603 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
2 documented practice locations
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
Additional practice locations (1)
- 903 W Martin St # Ms 49-2San Antonio, TX 78207-0903Phone: (201) 358-5437
Registry dates
- Enumerated
- 2006-08-24
- Last updated
- 2024-07-29
- Certified
- 2024-07-29
Frequently asked questions
- What is Sylvia Leal-Castanon's NPI number?
- Sylvia Leal-Castanon's National Provider Identifier (NPI) is 1841307915, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sylvia Leal-Castanon's specialty?
- Sylvia Leal-Castanon is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Sylvia Leal-Castanon located?
- Sylvia Leal-Castanon's practice location on file with NPPES is 333 N Santa Rosa, 3rd Fl, San Antonio, TX 78207.
- What is Sylvia Leal-Castanon's phone number?
- The practice phone number listed in the NPPES registry for Sylvia Leal-Castanon is (210) 257-1400.
- Does Sylvia Leal-Castanon accept Medicare?
- Sylvia Leal-Castanon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sylvia Leal-Castanon's NPI active?
- Yes — Sylvia Leal-Castanon's NPI (1841307915) is active in the NPPES registry as of the last update on 2024-07-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.