Ryan Frederiksen, MD
NPI 1922260033 · Diagnostic Radiology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Frederiksen, MD is a Diagnostic Radiology Physician provider in San Diego, CA (NPI 1922260033).
Provider details
- NPI number
- 1922260033
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A108502 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
7,178 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 1,541 | $8 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 602 | $85 |
| Ct Scan Head Or Brain Without Contrast70450 | 520 | $39 |
| X-Ray of Chest, 2 Views71046 | 436 | $10 |
| Ct Scan of Blood Vessels of Chest With Contrast71275 | 417 | $84 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 | 298 | $81 |
Practice location
Mailing address
Additional practice locations (4)
- 751 S Bascom AveSan Jose, CA 95128-2604Phone: (408) 885-5000
- 4660 S Hagadorn Rd Ste 410East Lansing, MI 48823-6819Phone: (517) 353-5053Fax: (517) 884-7640
- 4660 S Hagadorn Rd Ste 510East Lansing, MI 48823-6805Phone: (517) 353-5053Fax: (517) 884-7640
- 3220 Discovery Dr Ste 100Lansing, MI 48910-8609Phone: (517) 975-8930Fax: (517) 337-4985
Registry dates
- Enumerated
- 2008-06-30
- Last updated
- 2025-02-13
- Certified
- 2025-02-13
Frequently asked questions
- What is Ryan Frederiksen's NPI number?
- Ryan Frederiksen's National Provider Identifier (NPI) is 1922260033, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Frederiksen's specialty?
- Ryan Frederiksen is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Frederiksen located?
- Ryan Frederiksen's practice location on file with NPPES is 13280 Evening Creek Dr S, San Diego, CA 92128-4101.
- What is Ryan Frederiksen's phone number?
- The practice phone number listed in the NPPES registry for Ryan Frederiksen is (805) 403-9924.
- Does Ryan Frederiksen accept Medicare?
- Ryan Frederiksen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Frederiksen's NPI active?
- Yes — Ryan Frederiksen's NPI (1922260033) is active in the NPPES registry as of the last update on 2025-02-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.