Ryan Anthony Frederiksen, MD
Diagnostic Radiology Physician · San Diego, CA
Ryan Anthony Frederiksen, MD is a diagnostic radiology physician with a practice address in San Diego, California, and NPI 1922260033, issued on Jun 30, 2008. Check the license (California A108502, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ryan Anthony Frederiksen
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- A108502 CA
4301106997 MI
Self-reported in NPPES; status is on the state search - Practice location
- 13280 Evening Creek Dr S, San Diego, CA 92128
- Phone
- (805) 403-9924
- Enumerated
- Jun 30, 2008
- Record last updated
- Feb 13, 2025
- Medicare enrollment
- Enrolled (PECOS I20170321001027); accepts Medicare assignment
- Medical or professional school
- Northeastern Ohio University College Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 13280 Evening Creek Dr S
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Robert Fortuna, M.D.Diagnostic Radiology Physician1992719165
- Jill Furubayashi, M.D.Diagnostic Radiology Physician1457587073
- David Lee, M.D.Diagnostic Radiology Physician1629374061
- Christopher Park, MDDiagnostic Radiology Physician1700863198
- Manal Schoellerman, M.D.Diagnostic Radiology Physician1821060724
Verify Ryan Anthony Frederiksen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A108502Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 7 group practices
- Evergreen Radia LLCKaneohe, HI
- Medford Radiological Group PCKailua, HI
- Radia California Radiology Medical Group IncKailua, HI
- Radia Inc P SKaneohe, HI
- Radia Oregon Radiology Medical Group LLCKailua, HI
- Radiology Associates PAEdmonds, WA
- Swedish Health ServicesRedmond, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan Anthony Frederiksen among 4,500 diagnostic radiology physician records in California
Ryan Anthony Frederiksen, MD 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 2008, is newer than 59% of them.
- NPI issued2008 · 59% of these records are older, 36% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2007 · 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 San Diego → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Janet Amundson, M.D.San Diego, CA 921281285770388
- David Cohen, M.D.San Diego, CA 921281881993061
- Sagar DesaiSan Diego, CA 921281639708597
- Lien Doan, MDSan Diego, CA 921281740518547
- Robert Fortuna, M.D.San Diego, CA 921281992719165
- Jill Furubayashi, M.D.San Diego, CA 921281457587073
- David Lee, M.D.San Diego, CA 921281629374061
- Joseph Leeba, M.D.San Diego, CA 921281124130174
Common questions
What is Ryan Anthony Frederiksen, MD's NPI number?
Ryan Anthony Frederiksen, MD's National Provider Identifier (NPI) is 1922260033, issued on Jun 30, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Anthony Frederiksen, MD located?
The NPPES record lists a practice address at 13280 Evening Creek Dr S, San Diego, CA, 92128. Phone: (805) 403-9924. Providers update this record themselves, so call before visiting.
How can I verify Ryan Anthony Frederiksen, MD's license?
NPPES lists California license number A108502, 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.
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.