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

Sarah San Young Shafer, MD

Individual provider Medical Toxicology (Emergency Medicine) Physician · NPI 1639438385

Sarah San Young Shafer, MD is an Emergency Medicine in Houston, Texas. Qualified in 2012, 14 years ago. Practices with Physicians Referral Service, a 2,727-clinician group and accepts Medicare assignment. Licensed in Iowa and Texas.

Years since qualifying
14
Licensed in
IA, TX
In the registry since
2012
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

1515 Holcombe Blvd
Houston, TX 77030-4000
Phone: (713) 792-6161
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence Q9033 (TX)
Medical Toxicology (Emergency Medicine) Physician Taxonomy 207PT0002X · Licence MD-52396 (IA)
Medical Toxicology (Emergency Medicine) Physician Taxonomy 207PT0002X · Licence Q9033 (TX)
Emergency Medicine Physician Taxonomy 207P00000X · Licence MD-52396 (IA)

Record details

NPI number1639438385
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 15, 2012
Last updated in NPPESOctober 2, 2024
Certification dateOctober 2, 2024

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Also practisesMEDICAL TOXICOLOGY
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice Physicians Referral Service — 2727 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount