Physician Profile

Cashel O'Brien, DO

Unclaimed Profile

About Dr. O'brien

Based in Portland, ME, Cashel O'Brien, DO is listed in the NPI registry under cardiovascular disease. Cashel graduated from University of New England, College of Osteo Medicine in 2019. Cashel is also listed as specializing in internal medicine — adolescent medicine and internal medicine.

Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.

Specialty

Cardiovascular Disease (Primary)
Cardiovascular Disease (Additional)
Internal Medicine — Adolescent Medicine (Additional)
Internal Medicine (Additional)

Credentials & Licensing

ME licenseDO3386
NPI1093275612
NPI issued03/20/2019

License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.

Medicare information

Accepts Medicare assignmentYes
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 is Dr. O'Brien's specialty?

Dr. O'Brien is a cardiologist in Portland, ME. That is the designation recorded for this NPI in the federal registry, where it is listed as “Cardiovascular Disease”.

NPI registry

Where can I find Dr. O'Brien?

Dr. O'Brien is listed at 22 Bramhall St, Portland, ME 04102. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How do I contact Dr. O'Brien?

The number on file is (207) 662-4618. Guide.md cannot book appointments or pass on messages — please call the office directly.

NPI registry

What is Dr. O'Brien's NPI number?

Dr. O'Brien's National Provider Identifier is 1093275612. 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

What is Dr. O'Brien's medical education?

Dr. O'Brien attended University of New England, College of Osteo Medicine, graduating in 2019. This comes from the CMS National Downloadable File.

CMS public data

How long has Dr. O'Brien been practicing?

Dr. O'Brien has 7 years experience. Calculated from a graduation year of 2019, reported in the CMS National Downloadable File.

CMS public data

Has Dr. O'Brien confirmed this information?

Not yet. This profile is built from public federal data and has not been confirmed by Dr. O'Brien. If this is you, claiming it is free.

Guide.md

Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.