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

William W. Tseng, MD

Individual provider Surgery Physician · NPI 1417071242

William W. Tseng, MD is a Surgical Oncology in Arcadia, California. Graduated from Northwestern University Feinberg Medical School in 2004, 22 years ago. Practices with City of Hope Medical Foundation, a 959-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
22
Trained at
Northwestern University Feinberg Medical School
Licensed in
CA
In the registry since
2007
Specialties on file
2
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

301 W Huntington Dr Ste 400
Arcadia, CA 91007-3471
Phone: (626) 218-9840
Fax: (626) 218-9860
Show map & directions

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

Additional practice locations (2)

  • 1500 Duarte Rd, Duarte, CA 91010-3012 — (626) 256-4673
  • 209 Fair Oaks Ave, South Pasadena, CA 91030-1814 — (626) 396-2900

Specialties & licences

Surgical Oncology Physician (primary) Taxonomy 2086X0206X · Licence A94446 (CA)
Surgery Physician Taxonomy 208600000X · Licence A94446 (CA)

Record details

NPI number1417071242
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 19, 2007
Last updated in NPPESJune 8, 2022
Certification dateJune 8, 2022
Mailing addressPo Box 512185, Los Angeles, CA 90051-0185

Medicare enrollment

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

Medicare specialtySURGICAL ONCOLOGY
Also practisesGENERAL SURGERY
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 2004 (22 years in practice)
Group practice City Of Hope Medical Foundation — 959 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Arcadia