Are you Gregory J. Callahan, BOCO? This profile is yours to edit: update your address, phone, photo and services.

Edit this profile

Provider Profile

Gregory J. Callahan, BOCO

Is this you? Edit this profile

At a glance

About Gregory Callahan

Gregory J. Callahan, BOCO is a healthcare provider located in Baltimore, MD. NPI 1497944946 identifies this record in the national registry.

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

Specialty

Credentials & Licensing

MD licenceAs reported to the NPI registry
No. C21679As reported
NPINational Provider Identifier
1497944946Issued 2007

As reported to the NPI registry ↗

Common questions

Where can I find Gregory J. Callahan?

Gregory J. Callahan is listed at 3900 Loch Raven Blvd, Baltimore, MD 21218. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How do I contact Gregory J. Callahan?

The number on file is (410) 605-7000. Contact the office directly to confirm availability and scheduling.

NPI registry

What is Gregory J. Callahan's NPI number?

Gregory J. Callahan's National Provider Identifier is 1497944946. 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 Gregory J. Callahan been practicing?

Gregory J. Callahan has 19+ years experience. Registered with an NPI since 2007. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.

NPI registry

Has Gregory J. Callahan confirmed this information?

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

Guide.md

Guide.md listings do not constitute medical advice or an endorsement.