Ralph Marcus
Diagnostic Radiology Physician · Irvine, CA
Ralph Marcus is a diagnostic radiology physician with a practice address in Irvine, California, and NPI 1346566056, issued on Apr 20, 2010. Check the license (California A139091, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ralph Marcus
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- A139091 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7 Aberdeen St, Irvine, CA 92620
- Phone
- (949) 302-1362
- Enumerated
- Apr 20, 2010
- Record last updated
- Jun 19, 2025
- Medicare enrollment
- Enrolled (PECOS I20160606002444); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Verify Ralph Marcus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A139091Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- St Jude Radiology Medical Group IncFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ralph Marcus among 4,500 diagnostic radiology physician records in California
Ralph Marcus is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 67% of them.
- NPI issued2010 · 67% of these records are older, 30% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2009 · median 2004 among the 3,130 with a school on file
- Record last updated2025 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in California
There are 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in Irvine → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Ammar Hindi, M.D.Irvine, CA 926201437306032
- Hiren Dave, MDIrvine, CA 926181316193915
- Bennett Gray, MDIrvine, CA 926181376637132
- Hossein Mehdikhani Karimabad, M.D.Irvine, CA 926181083026041
- Judy Owens, M.D.Irvine, CA 926181366674962
- Piers Pravdo, D.OIrvine, CA 926181902260441
- Dina Ragheb, M.D.Irvine, CA 926181245201680
- Jason Salsamendi, M.D.Irvine, CA 926181497999148
Common questions
What is Ralph Marcus's NPI number?
Ralph Marcus's National Provider Identifier (NPI) is 1346566056, issued on Apr 20, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Ralph Marcus located?
The NPPES record lists a practice address at 7 Aberdeen St, Irvine, CA, 92620. Phone: (949) 302-1362. Providers update this record themselves, so call before visiting.
How can I verify Ralph Marcus's license?
NPPES lists California license number A139091, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Ralph Marcus's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.