JOHN A. BRENNAN M.D.
NPI 1649242389
Pathology - Anatomic Pathology & Clinical Pathology in Dubuque, IA

Q: What is John Brennan's NPI number?

The NPI number for John Brennan is 1649242389. It was assigned to this individual provider in the NPPES registry on February 6, 2006.

Q: What is John Brennan's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Q: When was this NPI record last updated?

The NPPES record for John Brennan was last updated on July 31, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.

Active since February 06, 2006

350 N GRANDVIEW AVE, DUBUQUE, IA 52001(563) 589-2431 Get Directions Write a Review

NPPES record last updated: July 31, 2013. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About John A. Brennan M.d. NPPES

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

JOHN A. BRENNAN M.D. (NPI 1649242389) is an individual anatomic pathology & clinical pathology provider in Dubuque, Iowa, licensed in Iowa (19899) and active in the NPI registry since February 2006.

NPPES Registry Identity

NPI1649242389

Entity TypeIndividualMale

Primary Taxonomy207ZP0102X

Provider Legal NameJOHN A. BRENNANCredential: M.D.

Location Address350 N GRANDVIEW AVEDubuque, IA 52001-6388

Mailing Address250 Mercy Dr, P O Box 731Dubuque, IA 52004-0731 · (563) 556-2012

Phone(563) 589-2431

Sole ProprietorNo

Enumeration DateFebruary 6, 2006

Last NPPES UpdateJuly 31, 2013

✔ NPI 1649242389 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ZP0102X

License✔ Licensed in IA · 19899

Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

350 N GRANDVIEW AVE, Dubuque, IA 52001

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Other Identifiers 2

Other16127IA · Bcbs Provider Number

Medicare PIN16127IA

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.

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