Sean L. Johnston, M.D., PH.D.
NPI 1477581866ActiveIndividual· Radiology, Vascular & Interventional Radiology· Santa Ana, CA
Radiology, Vascular & Interventional Radiology (M.D., PH.D.) in Santa Ana, California, trained at Mayo Medical School (class of 1998). Medicare paid $226,414 for services to 5,169 patients in 2024.
Overview
| NPI | 1477581866 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., PH.D. |
| Sole proprietor | No |
| NPI issued | Jun 28, 2006 |
| Last updated in NPPES | May 18, 2026 |
| Certified by provider | May 18, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Vascular & Interventional Radiology Primary | 2085R0204X | A73716 | CA |
| Radiology, Therapeutic Radiology | 2085R0203X | A73716 | CA |
| Radiology, Diagnostic Radiology | 2085R0202X | A73716 | CA |
| Radiology, Body Imaging | 2085B0100X | A73716 | CA |
| Radiology, Neuroradiology | 2085N0700X | A73716 | CA |
| Radiologic Technologist, Magnetic Resonance Imaging | 2471M1202X | 49574 | CA |
| Radiology, Pediatric Radiology | 2085P0229X | A73716 | CA |
| Radiology, Diagnostic Ultrasound | 2085U0001X | A73716 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Diagnostic Radiology (CA); Practitioner - Diagnostic Radiology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 5,169 |
|---|---|
| Services billed | 9,931 across 196 procedure codes |
| Paid by Medicare | $226,414 |
Education and affiliations
| Medical school | Mayo Medical School |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Diagnostic Radiology |
Medical groups
- Adventist Health Physicians NetworkSaint Helena, CA · 628 clinicians
- Adventist Health Clearlake Hospital Inc.Clearlake, CA · 87 clinicians
- Willits Hospital IncWillits, CA · 67 clinicians
- Reedley Community HospitalReedley, CA · 62 clinicians
- Hanford Community HospitalHanford, CA · 59 clinicians
- Plumas District HospitalQuincy, CA · 43 clinicians
- Adventist Health TulareTulare, CA · 40 clinicians
- Radiology Medical Group of WmmcTustin, CA · 29 clinicians
- Mawan Shuayto MD PCPort Huron, MI · 9 clinicians
Hospital affiliations
- Adventist Health ClearlakeClearlake, CA
- Adventist Health HanfordHanford, CA
- Adventist Health ReedleyReedley, CA
- Adventist Health TulareTulare, CA
- Adventist Health White MemorialLos Angeles, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other interventional radiologists in Santa Ana
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