Question 1

What does Thomas W. Callan specialize in?

Accepted Answer

Thomas W. Callan is a cancer specialist in El Cajon, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Hematology & Oncology”.

Question 2

Where is Thomas W. Callan located?

Accepted Answer

Thomas W. Callan is listed at 230 Cajon View Dr, El Cajon, CA 92020. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

Question 3

What is Thomas W. Callan's phone number?

Accepted Answer

The number on file is (619) 440-4421. Guide.md cannot book appointments or pass on messages — please call the office directly.

Question 4

What is the NPI for Thomas W. Callan?

Accepted Answer

Thomas W. Callan's National Provider Identifier is 1699911487. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.

Question 5

How much experience does Thomas W. Callan have?

Accepted Answer

Thomas W. Callan has 18+ years experience. Registered with an NPI since 2008. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.

NPI registry

Question 6

Is Thomas W. Callan's profile verified?

Accepted Answer

Not yet. This profile is built from public federal data and has not been confirmed by Thomas W. Callan. If this is you, claiming it is free.

Thomas W. Callan, M. D.

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