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

Hussein Merza, MD

Individual provider Hematology (Internal Medicine) Physician · NPI 1235409673

Hussein Merza, MD is a Medical Oncology in Corona, California. Qualified in 2007, 19 years ago. Practices with Southern California Permanente Medical Group, an 11,242-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
19
Licensed in
CA
In the registry since
2012
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

260 E Ontario Ave Ste 101
Corona, CA 92879-3508
Phone: (951) 371-2411
Fax: (951) 284-0177
Show map & directions

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

Additional practice locations (2)

  • 1240 S Cedar Crest Blvd Ste 401, Allentown, PA 18103-6218 — (610) 402-7880
  • 333 Cottman Ave, Philadelphia, PA 19111-2434 — (215) 728-6900

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence A168484 (CA)
Hematology (Internal Medicine) Physician Taxonomy 207RH0000X · Licence A168484 (CA)

Record details

NPI number1235409673
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 3, 2012
Last updated in NPPESMay 27, 2025
Certification dateSeptember 24, 2020
Mailing address260 E Ontario Ave Ste 101, Corona, CA 92879-3508

Medicare enrollment

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

Medicare specialtyMEDICAL ONCOLOGY
Also practisesHEMATOLOGY/ONCOLOGY, INTERNAL MEDICINE
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Southern California Permanente Medical Group — 11242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare