Individual provider Active NPI

James T Heisler, MD

  • Geriatric Medicine (Internal Medicine) Physician
  • Houston, TX
National Provider Identifier
1538197157
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Geriatric Medicine (Internal Medicine) PhysicianTaxonomy code 207RG0300X
License
G6938 Issued in TX
Practice address
7737 Southwest Fwy
Suite 405
Houston, TX 77074-1807
Phone
(713) 456-4500
Fax
(713) 456-4186
NPI assigned
Jun 30, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X G6938 TX
Geriatric Medicine (Internal Medicine) Physician 207RG0300X G6938 TX Primary

Addresses

Primary practice location

7737 Southwest Fwy
Suite 405
Houston, TX 77074-1807

Mailing address

7600 Beechnut St
Houston, TX 77074-4302
Phone (713) 456-4500

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
MHS Physicians of Texas Internal Medicine Past Accepting new patients
Memorial Hermann Neighborhood Health Centers, PLLC Internal Medicine Past Accepting new patients

Organizations & group practices 2

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1151625600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1538197157",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7600 BEECHNUT ST",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770744302",
            "telephone_number": "713-456-4500",
            "fax_number": "713-456-4186"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "7737 SOUTHWEST FWY",
            "address_2": "SUITE 405",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770741807",
            "telephone_number": "713-456-4500",
            "fax_number": "713-456-4186"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HEISLER",
        "first_name": "JAMES",
        "middle_name": "T",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-30",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "G6938",
            "primary": false
        },
        {
            "code": "207RG0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Geriatric Medicine",
            "state": "TX",
            "license": "G6938",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Houston, TX

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 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.