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Physician Profile

James J. O'Leary, M.D.

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At a glance

About Dr. O'leary

James J. O'Leary, M.D. practices medical oncology in Waltham, MA. The provider's National Provider Identifier (NPI) is 1336371012.

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

Specialty

Medical Oncology (Primary)

Credentials & Licensing

NY licenceAs reported to the NPI registry
No. 188142As reported
NPINational Provider Identifier
1336371012Issued 2009

As reported to the NPI registry ↗

Common questions

What is James J. O'Leary's specialty?

James J. O'Leary is an oncologist in Waltham, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Medical Oncology”.

NPI registry

Where can I find James J. O'Leary?

James J. O'Leary is listed at 830 Winter St, Waltham, MA 02451. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How do I contact James J. O'Leary?

The number on file is (781) 895-0600. Contact the office directly to confirm availability and scheduling.

NPI registry

What is James J. O'Leary's NPI number?

James J. O'Leary's National Provider Identifier is 1336371012. 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

How long has James J. O'Leary been practicing?

James J. O'Leary has 17+ years experience. Registered with an NPI since 2009. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.

NPI registry

Has James J. O'Leary confirmed this information?

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

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