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

Steven Siwei Yu, MD

Individual provider Hematology & Oncology Physician · NPI 1659643682

Steven Siwei Yu, MD is a Hematology/Oncology in Fountain Valley, California. Graduated from Medical University of South Carolina College of Medicine in 2011, 15 years ago. Practices with Los Angeles Hematology-Oncology Medical Group, a 51-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
15
Trained at
Medical University of South Carolina College of Medicine
Licensed in
CA
In the registry since
2012
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

11180 Warner Ave Ste 351
Fountain Valley, CA 92708-7516
Phone: (714) 698-0300
Fax: (714) 698-0313
Show map & directions

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

Additional practice locations (1)

  • 3801 Katella Ave Ste 207, Los Alamitos, CA 90720-3382 — (714) 698-0300

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence A122462 (CA)

Record details

NPI number1659643682
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 7, 2012
Last updated in NPPESMay 21, 2025
Certification dateMay 21, 2025
Mailing address11180 Warner Ave Ste 351, Fountain Valley, CA 92708-7516

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolMEDICAL UNIVERSITY OF SOUTH CAROLINA COLLEGE OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice Los Angeles Hematology-Oncology Medical Group — 51 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

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