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

Thomas Yang Sun, MD

Individual provider Internal Medicine Physician · NPI 1215468160

Thomas Yang Sun, MD is a Hematology/Oncology in Pleasanton, California. Graduated from Yale University School of Medicine in 2017, 9 years ago. Practices with Stanford Health Care, a 3,085-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
9
Trained at
Yale University School of Medicine
Licensed in
CA
In the registry since
2017
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

5725 W Las Positas Blvd Ste 100A
Pleasanton, CA 94588-4054
Phone: (925) 734-8130
Show map & directions

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

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence A157081 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A157081 (CA)
Hematology (Internal Medicine) Physician Taxonomy 207RH0000X · Licence A157081 (CA)

Record details

NPI number1215468160
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 22, 2017
Last updated in NPPESApril 29, 2024
Certification dateApril 29, 2024
Mailing address5725 W Las Positas Blvd Ste 100a, Pleasanton, CA 94588-4054

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolYALE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2017 (9 years in practice)
Group practice Stanford Health Care — 3085 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Pleasanton