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

Dr. Ralph Marcus

Individual provider Diagnostic Radiology Physician · NPI 1346566056

Dr. Ralph Marcus is a Diagnostic Radiology in Irvine, California. Graduated from University of California, San Francisco School of Medicine in 2009, 17 years ago. Practices with St Jude Radiology Medical Group Inc, a 61-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
17
Trained at
University of California, San Francisco School of Medicine
Licensed in
CA
In the registry since
2010
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Practice location Address checks out

7 Aberdeen St
Irvine, CA 92620-3302
Phone: (949) 302-1362
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence A139091 (CA)

Record details

NPI number1346566056
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedApril 20, 2010
Last updated in NPPESJune 19, 2025
Certification dateJune 19, 2025
Mailing address7 Aberdeen St, Irvine, CA 92620-3302

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduated 2009 (17 years in practice)
Group practice St Jude Radiology Medical Group Inc — 61 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Irvine