Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mr. Gregory J. Callahan, BOCO

Individual provider Other Technician · NPI 1497944946

Mr. Gregory J. Callahan, BOCO is an Other Technician in Baltimore, Maryland. Licensed in Maryland. Registered with an NPI since 2007.

Licensed in
MD
In the registry since
2007

Practice location Address checks out

3900 Loch Raven Blvd
Baltimore, MD 21218-2108
Phone: (410) 605-7000
Fax: (410) 605-7677
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Other Technician (primary) Taxonomy 247200000X · Licence C21679 (MD)

Record details

NPI number1497944946
Entity typeIndividual (Type 1)
GenderMale
Credentials BOCO
Sole proprietorNo
NPI enumeratedOctober 22, 2007
Last updated in NPPESOctober 22, 2007
Mailing address3900 Loch Raven Blvd, Baltimore, MD 21218-2108

Other providers in Baltimore