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

Dr. Ralph Marcus

Individual provider Diagnostic Radiology Physician · NPI 1346566056

Dr. Ralph Marcus practises 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

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

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 patients1,736
Services billed 3,404 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $15 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Providence St. Jude Medical Center Hospital · Fullerton, CA
  • Uci Health-Orange Hospital · Orange, CA

Colleagues at St Jude Radiology Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 61 clinicians in the practice; 12 are shown here.

Other providers in Irvine