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

Ryan Chang

Individual provider Medical Oncology Physician · NPI 1164985263

Ryan Chang is a Medical Oncology Physician in San Mateo, California. Licensed in California. Registered with an NPI since 2019.

Licensed in
CA
In the registry since
2019

Practice location Address checks out

218 De Anza Blvd
San Mateo, CA 94402-3913
Phone: (415) 514-7520
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 A179941 (CA)

Record details

NPI number1164985263
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 8, 2019
Last updated in NPPESAugust 28, 2024
Certification dateAugust 28, 2024
Mailing address1 Hawthorne St Unit 20f, San Francisco, CA 94105-3983

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