Dr. Sean L Johnston, MD, PHD
Dr. Sean L Johnston, MD, PHD is a Diagnostic Radiology in Santa Ana, California. Graduated from Mayo Medical School in 1998, 28 years ago. Practices with Willits Hospital Inc, a 67-clinician group. Licensed in California.
- Years since qualifying
- 28
- Trained at
- Mayo Medical School
- Licensed in
- CA
- In the registry since
- 2006
- Specialties on file
- 8
What do these letters mean?
Practice location Address checks out
2414 S Fairview St Ste 202BSanta Ana, CA 92704-5318
Phone: (805) 300-6761
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Pin is approximate — placed at the ZIP-code centre, not the exact door.
Specialties & licences
| Vascular & Interventional Radiology Physician (primary) | Taxonomy 2085R0204X · Licence A73716 (CA) |
|---|---|
| Therapeutic Radiology Physician | Taxonomy 2085R0203X · Licence A73716 (CA) |
| Diagnostic Radiology Physician | Taxonomy 2085R0202X · Licence A73716 (CA) |
| Body Imaging Physician | Taxonomy 2085B0100X · Licence A73716 (CA) |
| Neuroradiology Physician | Taxonomy 2085N0700X · Licence A73716 (CA) |
| Magnetic Resonance Imaging Radiologic Technologist | Taxonomy 2471M1202X · Licence 49574 (CA) |
| Pediatric Radiology Physician | Taxonomy 2085P0229X · Licence A73716 (CA) |
| Diagnostic Ultrasound Physician | Taxonomy 2085U0001X · Licence A73716 (CA) |
Record details
| NPI number | 1477581866 |
|---|---|
| Entity type | Individual (Type 1) |
| Gender | Male |
| Credentials | MD , PHD |
| Sole proprietor | No |
| NPI enumerated | June 28, 2006 |
| Last updated in NPPES | May 18, 2026 |
| Certification date | May 18, 2026 |
Medicare enrollment
| Medicare specialty | DIAGNOSTIC RADIOLOGY |
|---|---|
| Medical school | MAYO MEDICAL SCHOOL |
| Graduated | 1998 (28 years in practice) |
| Group practice | Willits Hospital Inc — 67 clinicians |
| Accepts Medicare assignment | Not indicated |
| Practice locations | 12 on file with Medicare |