Quick answers
- Does Roy L. Dorman Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Roy L. Dorman Jr. accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Roy L. Dorman Jr. see?
- In 2024, CMS data shows 403 Original Medicare patients and 1,109 services for Roy L. Dorman Jr.. This counts Original Medicare only and measures volume, not quality.
- What is Roy L. Dorman Jr.'s NPI number?
- 1366519886. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Roy L. Dorman Jr., data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 403 |
|---|---|
| Services billed to Medicare | 1,109 |
| Different services or procedures | 92 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Injection, gadolinium-based magnetic resonance contrast agent, not otherwise specified (nos), per ml (A9579)320 services
- Screening mammography (77067)117 services
- Dxa bone density measurement of hip, pelvis, spine (77080)115 services
- Complete ultrasound scan of 1 breast (76641)46 services
- Diagnostic mammography of both breasts (77066)18 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure70%
- Diabetes44%
- Arthritis41%
- Osteoporosis34%
- Chronic kidney disease19%
Practice locations
Addresses where Roy L. Dorman Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 11160 Warner Ave, Suite 105Fountain Valley, CA 92708 (714) 619‑7500
- 12665 Garden Grove Blvd, Suite 103Garden Grove, CA 92843 (714) 620‑8200
- 15825 Laguna Canyon Rd, Suite 101Irvine, CA 92618 (949) 777‑9000
- 1661 Golden Rain RdSeal Beach, CA 90740 (562) 795‑6314
- 3513 Whittier BlvdLos Angeles, CA 90023 (323) 262‑1814
Group practices
Medicare enrollment lists Roy L. Dorman Jr. as a member of this group (CMS data updated October 2, 2026).
- United Medical Imaging Healthcare Inc58 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Fountain Valley
Clinicians with the same Medicare primary specialty in Fountain Valley, CA — not a recommendation.
Other clinicians in United Medical Imaging Healthcare Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Yale University School Of Medicine |
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1366519886 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians