Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Cathy Mei Tsin, MD

Individual provider Pediatrics Physician · NPI 1275920092

Cathy Mei Tsin, MD is a Pediatric Medicine in San Antonio, Texas. Qualified in 2015, 11 years ago. Works from 2 locations. Licensed in California and Texas.

Years since qualifying
11
Licensed in
CA, TX
In the registry since
2015
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

333 N Santa Rosa
San Antonio, TX 78207-3108
Phone: (210) 704-3030
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 725 Welch Rd, Palo Alto, CA 94304-1601 — (650) 497-8000

Specialties & licences

Pediatric Rheumatology Physician (primary) Taxonomy 2080P0216X · Licence W1516 (TX)
Pediatrics Physician Taxonomy 208000000X · Licence W1516 (TX)
Pediatric Rheumatology Physician Taxonomy 2080P0216X · Licence A168568 (CA)
Pediatrics Physician Taxonomy 208000000X · Licence A168568 (CA)

Record details

NPI number1275920092
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 20, 2015
Last updated in NPPESOctober 1, 2025
Certification dateOctober 1, 2025
Mailing address315 N San Saba Ste 1135, San Antonio, TX 78207-3255

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPEDIATRIC MEDICINE
Also practisesRHEUMATOLOGY
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Accepts Medicare assignment Not indicated

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