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THOMAS GIBSON BRENNAN JR. M.D.
NPI 1720059405
Radiology - Diagnostic Radiology in Owings Mills, MD

Active since January 30, 2006
21 CROSSROADS DR, STE 100, OWINGS MILLS, MD 21117(410) 356-8186(410) 356-4180 Get Directions Write a Review

NPPES record last updated: March 18, 2008. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Thomas Gibson Brennan Jr. M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

THOMAS GIBSON BRENNAN JR. M.D. (NPI 1720059405) is an individual diagnostic radiology provider in Owings Mills, Maryland, licensed in Maryland (D0012843) and active in the NPI registry since January 2006.

NPPES Registry Identity

NPI1720059405
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameTHOMAS GIBSON BRENNAN JR.Credential: M.D.
Location Address21 CROSSROADS DR, STE 100Owings Mills, MD 21117-5441
Mailing Address10373a Reisterstown RdOwings Mills, MD 21117-3617 · (410) 356-8186 · Fax (410) 356-4180
Phone(410) 356-8186
Fax(410) 356-4180
Sole ProprietorNo
Enumeration DateJanuary 30, 2006
Last NPPES UpdateMarch 18, 2008
✔ NPI 1720059405 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
License✔ Licensed in MD · D0012843
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
21 CROSSROADS DR, Owings Mills, MD 21117
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Other Identifiers 9

Medicare ID-Type Unspecified434L502TMD · Locality/juris. Code 01
Medicare ID-Type Unspecified435L507TMD · Locality/juris. Code 02
OtherJ062MD · B/c B/s
Medicare UPINB38414MD
Medicare ID-Type UnspecifiedCD4495MD · Railroad Medicare
Medicare ID-Type UnspecifiedCN2566MD · Railroad Medicare
Medicare ID-Type UnspecifiedDD4343DE · Railroad Medicare
Other2849DC · B/c B/s
OtherKA80MD · B/c B/s

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. ELIZABETH LEONARD KIM M.D.
Radiology (Diagnostic Radiology)
21 CROSSROADS DR, STE 100
OWINGS MILLS, MD 21117
Baltimore County (410) 356-8186
ANDREW I PUPKIN DDS PA
Dentist
21 CROSSROADS DR, SUITE 350
OWINGS MILLS, MD 21117
Baltimore County (410) 581-1411
RICHARD P. FRANKLIN, M.D., P.A.
Specialist
21 CROSSROADS DR, SUITE 215
OWINGS MILLS, MD 21117
Baltimore County (410) 363-0044
MR. MICHAEL JOHN RITMILLER PA
Physician Assistant
21 CROSSROADS DR, SUITE 200
OWINGS MILLS, MD 21117
Baltimore County (410) 581-1600
DR. DARRYL JAY GARFINKEL M.D.
Radiology (Pediatric Radiology)
21 CROSSROADS DR, STE 100
OWINGS MILLS, MD 21117
Baltimore County (410) 356-8186
DR. ANDREW I. PUPKIN DDS
Dentist
21 CROSSROADS DR, SUITE 350
OWINGS MILLS, MD 21117
Baltimore County (410) 581-1411
ROHIT R LAKHANPAL M.D.
Ophthalmology (Retina Specialist)
21 CROSSROADS DR, SUITE 425
OWINGS MILLS, MD 21117
Baltimore County (410) 581-2020
DR. BRIAN MARK MONROE M.D.
Radiology (Diagnostic Radiology)
21 CROSSROADS DR, STE 100
OWINGS MILLS, MD 21117
Baltimore County (410) 356-8186

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Thomas Brennan's NPI number?

The NPI number for Thomas Brennan is 1720059405. It was assigned to this individual provider in the NPPES registry on January 30, 2006.

Where is Thomas Brennan located?

Thomas Brennan practices at 21 Crossroads Dr Ste 100, Owings Mills, MD 21117. The listed phone number is (410) 356-8186.

What is Thomas Brennan's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

When was this NPI record last updated?

The NPPES record for Thomas Brennan was last updated on March 18, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.