DR. JOHN MICHAEL HARTNETT M.D.
NPI 1366452146
Internal Medicine - Infectious Disease in Bloomington, IN

Q: What is John Hartnett's NPI number?

The NPI number for John Hartnett is 1366452146. It was assigned to this individual provider in the NPPES registry on August 8, 2006. The provider is also known as Michael Hartnett M.D..

Q: What is John Hartnett's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Q: When was this NPI record last updated?

The NPPES record for John Hartnett was last updated on April 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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 August 08, 2006

5365 W COBBLESTONE ST, BLOOMINGTON, IN 47403(415) 548-1885 Get Directions Write a Review

NPPES record last updated: April 2, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Apr 2, 2025, Apr 4, 2020 (2 updates tracked since 2020).

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About Dr. John Michael Hartnett M.d. NPPES

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

DR. JOHN MICHAEL HARTNETT M.D. (NPI 1366452146) is an individual infectious disease provider in Bloomington, Indiana, licensed in California (G72166) and active in the NPI registry since August 2006.

NPPES Registry Identity

NPI1366452146

Entity TypeIndividualMale

Primary Taxonomy207RI0200X

Provider Legal NameDR. JOHN MICHAEL HARTNETTCredential: M.D.

Location Address5365 W COBBLESTONE STBloomington, IN 47403-8204

Mailing Address5365 W Cobblestone StBloomington, IN 47403-8204 · (415) 548-1885

Phone(415) 548-1885

Sole ProprietorYes

Enumeration DateAugust 8, 2006

Last NPPES UpdateApril 2, 20252 updates tracked since enumeration

NPPES CertifiedApril 2, 2025

✔ NPI 1366452146 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

Licenses✔ Licensed in CA · G72166✔ Licensed in IN · 01088532A

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

5365 W COBBLESTONE ST, Bloomington, IN 47403

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Other Names 1

Professional Name (2)Michael Hartnett M.d.

Other Identifiers 1

Medicaid00G721661CA

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 John Hartnett's NPI number?

The NPI number for John Hartnett is 1366452146. It was assigned to this individual provider in the NPPES registry on August 8, 2006. The provider is also known as Michael Hartnett M.D..

Where is John Hartnett located?

John Hartnett practices at 5365 W Cobblestone St, Bloomington, IN 47403. The listed phone number is (415) 548-1885.

What is John Hartnett's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

When was this NPI record last updated?

The NPPES record for John Hartnett was last updated on April 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.