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

Dr. Firas Naji, DO

Individual provider Internal Medicine Physician · NPI 1578883997

Dr. Firas Naji, DO is an Internal Medicine in Irvine, California. Graduated from University of New England, College of Osteo Medicine in 2010, 16 years ago. Practices with City of Hope Medical Foundation, a 959-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
16
Trained at
University of New England, College of Osteo Medicine
Licensed in
MA
In the registry since
2010
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

17595 Harvard Ave Ste C-803
Irvine, CA 92614-8516
Phone: (949) 981-5033
Fax: (949) 272-9976
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 253997 (MA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X · Licence 244291 (MA)

Record details

NPI number1578883997
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedJune 8, 2010
Last updated in NPPESNovember 27, 2023
Certification dateNovember 27, 2023

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST, OSTEOPATHIC MANIPULATIVE MEDICINE
Medical schoolUNIVERSITY OF NEW ENGLAND, COLLEGE OF OSTEO MEDICINE
Graduated 2010 (16 years in practice)
Group practice City Of Hope Medical Foundation — 959 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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