Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Fei Fei, MD

Individual provider Molecular Genetic Pathology (Pathology) Physician · NPI 1124551312

Dr. Fei Fei, MD practises Pathology in Duarte, California. Qualified in 2003, 23 years ago. Practices with City of Hope Medical Foundation, a 959-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
23
Licensed in
CA
In the registry since
2017
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1500 Duarte Rd
Duarte, CA 91010-3012
Phone: (800) 826-4673
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4900 Rivergrade Rd, Irwindale, CA 91706-1401 — (800) 826-4673

Specialties & licences

Anatomic Pathology & Clinical Pathology Physician (primary) Taxonomy 207ZP0102X · Licence A164912 (CA)
Molecular Genetic Pathology (Pathology) Physician Taxonomy 207ZP0007X · Licence A164912 (CA)

Record details

NPI number1124551312
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 5, 2017
Last updated in NPPESAugust 27, 2025
Certification dateAugust 27, 2025

Medicare enrollment

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

Medicare specialtyPATHOLOGY
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice City Of Hope Medical Foundation — 959 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients918
Services billed 1,869 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Affiliated with 1 hospital, which CMS identifies by certification number only.

Colleagues at City of Hope Medical Foundation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 959 clinicians in the practice; 12 are shown here.

Other providers in Duarte