Physician Profile

John T. Brennan, MD

Unclaimed Profile

About Dr. Brennan

Based in Onalaska, WI, John T. Brennan, MD is listed in the NPI registry under emergency medicine. John is also listed as specializing in internal medicine and family medicine.

Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.

Specialty

Emergency Medicine (Primary)
Emergency Medicine (Additional)
Internal Medicine (Additional)
Family Medicine (Additional)

Credentials & Licensing

WI license16368
NPI1891776977
NPI issued11/07/2005

Source: NPPES NPI Registry

Common questions

What kind of doctor is Dr. Brennan?

Dr. Brennan is an emergency physician in Onalaska, WI. That is the designation recorded for this NPI in the federal registry, where it is listed as “Emergency Medicine”.

NPI registry

What is Dr. Brennan's address?

Dr. Brennan is listed at 191 Theater Rd, Onalaska, WI 54650. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How can I make an appointment with Dr. Brennan?

The number on file is (608) 785-0940. Guide.md cannot book appointments or pass on messages — please call the office directly.

NPI registry

What is the NPI for Dr. Brennan?

Dr. Brennan's National Provider Identifier is 1891776977. 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 much experience does Dr. Brennan have?

Dr. Brennan has 21+ years experience. Registered with an NPI since 2005. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.

NPI registry

Is Dr. Brennan's profile verified?

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

Guide.md

Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.