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

Usama Mahmood, MD

Individual provider Radiation Oncology Physician · NPI 1386848844

Usama Mahmood, MD is a Radiation Oncology in Fountain Valley, California. Graduated from University of California, Irvine, California College of Medicine in 2006, 20 years ago. Practices with Torrance Memorial Medical Center, a 52-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Texas.

Years since qualifying
20
Trained at
University of California, Irvine, California College of Medicine
Licensed in
TX
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

18111 Brookhurst St # LL0300
Fountain Valley, CA 92708-6728
Phone: (714) 962-7100
Fax: (714) 963-7600
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence P035 (TX)

Record details

NPI number1386848844
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 11, 2007
Last updated in NPPESDecember 6, 2016
Mailing addressPo Box 844945, Los Angeles, CA 90084-4945

Medicare enrollment

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

Medicare specialtyRADIATION ONCOLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
Graduated 2006 (20 years in practice)
Group practice Torrance Memorial Medical Center — 52 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Fountain Valley