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Physician Profile

Sean L. Johnston, M.D., PhD

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At a glance

About Dr. Johnston

Sean L. Johnston, M.D., PhD is a healthcare provider in Santa Ana, CA specializing in vascular & interventional radiology. Sean trained at Mayo Medical School, graduating in 1998. Sean is also listed as specializing in radiology, nuclear medicine, and diagnostic radiology. According to Medicare claims data, Sean cared for 4,703 Medicare patients across 6,620 services. The services billed most often include injection, gadoteridol, (prohance multipack), per ml, x-ray of chest, 1 view, and dxa bone density measurement of hip, pelvis, spine. This provider record is associated with NPI 1477581866.

Factual summary compiled by Guide.md from public records; not written by this provider.

Education & Training

Specialty

Nuclear Medicine (Additional)
Radiology (Additional)
Diagnostic Radiology (Additional)
Therapeutic Radiology (Additional)
Diagnostic Ultrasound (Additional)

Credentials & Licensing

CA · Physician and Surgeon AMedical Board of California
No. 73716CurrentExpires Jan 2027Since 2001
CA licenceAs reported to the NPI registry
No. 49574As reported
NPINational Provider Identifier
1477581866Issued 2006

Snapshot · verify with the board ↗

Medicare information

Accepts Medicare assignmentSometimes (reported per claim)
Medicare opt-outNo
Can order and refer in MedicareYes

Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.

Common questions

What kind of doctor is Sean L. Johnston, M.D.?

Sean L. Johnston, M.D. is an interventional radiologist in Santa Ana, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Vascular & Interventional Radiology”.

NPI registry

What is Sean L. Johnston, M.D.'s address?

Sean L. Johnston, M.D. is listed at 2414 S Fairview St Ste 202B, Santa Ana, CA 92704. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How can I make an appointment with Sean L. Johnston, M.D.?

The number on file is (805) 300-6761. Contact the office directly to confirm availability and scheduling.

NPI registry

What is Sean L. Johnston, M.D.'s NPI number?

Sean L. Johnston, M.D.'s National Provider Identifier is 1477581866. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.

NPI registry

Where did Sean L. Johnston, M.D. train?

Sean L. Johnston, M.D. attended Mayo Medical School, graduating in 1998. This comes from the CMS National Downloadable File.

CMS public data

How long has Sean L. Johnston, M.D. been practicing?

Sean L. Johnston, M.D. has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.

CMS public data

What procedures does Sean L. Johnston, M.D. perform?

According to Medicare billing data, Sean L. Johnston, M.D. performs imaging including x-ray of chest, 1 view and dxa bone density measurement of hip, pelvis, spine; provides treatments such as ultrasound study of one arm or leg veins with compression and maneuvers. This reflects Medicare patients only and is billing volume, not a measure of quality.

Medicare claims

Has Sean L. Johnston, M.D. confirmed this information?

Not yet. This profile is built from public federal data and has not been confirmed by Sean L. Johnston, M.D.. If this is you, claiming it is free.

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