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

Heather Siobhan Calderwood, PA-C

Individual provider Physician Assistant · NPI 1033952270

Heather Siobhan Calderwood, PA-C is a Physician Assistant in Stanford, California. Qualified in 2024, 2 years ago. Practices with Tmh Physician Associates PLLC, a 1,899-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California and Texas.

Years since qualifying
2
Licensed in
CA, TX
In the registry since
2024
Specialties on file
2
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

300 Pasteur Dr
Stanford, CA 94305-2200
Phone: (650) 723-4000
Show map & directions

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

Additional practice locations (1)

  • 6565 Fannin St, Houston, TX 77030-2703 — (713) 790-3311

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence 67340 (CA)
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Taxonomy 208G00000X · Licence PA18400 (TX)

Record details

NPI number1033952270
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA-C
Sole proprietorYes
NPI enumeratedJune 17, 2024
Last updated in NPPESMarch 9, 2026
Certification dateMarch 9, 2026

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2024 (2 years in practice)
Group practice Tmh Physician Associates Pllc — 1899 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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