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

Dr. Marion Joseph Fedoruk, MD

Individual provider Occupational Medicine Physician · NPI 1265500581

Dr. Marion Joseph Fedoruk, MD is an Internal Medicine in Irvine, California. Qualified in 1978, 48 years ago. Practices with Uc Regents, a 306-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
48
Licensed in
CA
In the registry since
2006
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

19722 Macarthur Blvd
Irvine, CA 92612-2404
Phone: (949) 824-8641
Show map & directions

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

Additional practice locations (1)

  • Uci Medical Center, Orange, CA 92868 — (714) 456-8978

Specialties & licences

Occupational Medicine Physician (primary) Taxonomy 2083X0100X · Licence 000000G39629 (CA)

Record details

NPI number1265500581
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 4, 2006
Last updated in NPPESNovember 14, 2022
Certification dateNovember 14, 2022

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesPREVENTIVE MEDICINE
Medical schoolOTHER
Graduated 1978 (48 years in practice)
Group practice Uc Regents — 306 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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