John Michael Hartnett, M.D.

Primary specialty

Infectious Disease PhysicianTaxonomy code 207RI0200X

License

G72166 Issued in CA

Practice address

5365 W Cobblestone St
Bloomington, IN 47403-8204

Phone

(415) 548-1885

NPI assigned

Aug 8, 2006

Last updated

Apr 2, 2025By the provider in NPPES

Sex

Male

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Other identifiers 1

Other names 1

• Michael Hartnett Professional name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

HHS exclusion list flag

CMS’s directory marks this NPI as on an HHS exclusion list; no matching OIG record was found. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.

Credentials

Doctor of Medicine

State licenses

Interoperability endpoints

• Direct secure messaging: michael.hartnett.1@14789.direct.athenahealth.com

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1154995200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1743552000000",
    "number": "1366452146",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5365 W COBBLESTONE ST",
            "city": "BLOOMINGTON",
            "state": "IN",
            "postal_code": "474038204",
            "telephone_number": "415-548-1885"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5365 W COBBLESTONE ST",
            "city": "BLOOMINGTON",
            "state": "IN",
            "postal_code": "474038204",
            "telephone_number": "415-548-1885"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HARTNETT",
        "first_name": "JOHN",
        "middle_name": "MICHAEL",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-08-08",
        "last_updated": "2025-04-02",
        "certification_date": "2025-04-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "CA",
            "license": "G72166",
            "primary": true
        },
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "IN",
            "license": "01088532A",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00G721661",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MICHAEL",
            "last_name": "HARTNETT",
            "credential": "M.D.",
            "code": "2",
            "type": "Professional Name"
        }
    ]
}

• David W Hart, MD
• Jonathan D Hart, M.D.
• Mason Hartless
• Eric P. Hartman, MD
• Kaylan Hartman, RBT
• Sarah Suzanne Hartung, M.D.
• Barbara Harvey
• Dreama Michelle Harvey, NP
• Ellie Harvey
• Michelle Haseman

• Infectious Disease Physician in Bloomington, IN
• Providers in Bloomington, IN by specialty
• Infectious Disease Physician in Indiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 2, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.