Individual provider Active NPI

Stephen Alexander Harding, M.D.

  • Emergency Medicine Physician
  • Houston, TX
National Provider Identifier
1205239332
Registry record updated Oct 10, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
R7754 Issued in TX
Practice address
6621 Fannin St
Houston, TX 77030-2358
Phone
(832) 824-1000
NPI assigned
Oct 3, 2014
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 10, 2025

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

Specialties & licenses 5

Specialty (taxonomy)CodeLicenseStatePrimary
Pediatric Medical Toxicology Physician 2080T0002X 286783-1 NY
Emergency Medicine Physician 207P00000X R7754 TX Primary
Emergency Medicine Physician 207P00000X 286783-1 NY
Student in an Organized Health Care Education/Training Program 390200000X
Medical Toxicology (Emergency Medicine) Physician 207PT0002X 286783-1 NY

Addresses

Primary practice location

6621 Fannin St
Houston, TX 77030-2358

Mailing address

6621 Fannin St Ste A210
Houston, TX 77030-2358
Phone (832) 824-1000

Other practice location 1

6720 Bertner Ave
Houston, TX 77030-2604
Phone (832) 355-2666

Other practice location 2

7200 Cambridge St
Houston, TX 77030-4202
Phone (713) 798-2400

Other practice location 3

455 1st Ave
New York, NY 10016-9102
Phone (713) 818-6043

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20180815000588 TX Practitioner - Emergency Medicine 4688967862 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
University of Texas Medical School at Houston, 2013
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Baylor College of MedicineGroup PAC ID 8224941265, 796 clinicians
Texas Childrens Physician GroupGroup PAC ID 4385722081, 661 clinicians
Baylor College of MedicineGroup PAC ID 8022243971, 1,230 clinicians

Practice addresses (Care Compare)

1504 Taub Loop
Houston, TX 77030-1608
Phone (713) 873-2000

6651 Main St
Houston, TX 77030-2351
Phone (832) 826-3000

7200 Cambridge St
FL 10
Houston, TX 77030-4202
Phone (713) 798-1000

Hospital & facility affiliations

  • Harris Health Hospital, Houston, TX, CCN 450289

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
286783-1NYMDPediatric Medical Toxicology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Texas Children'S Physician Group CurrentSince Nov 26, 2025 Accepting new patients
Baylor College of Medicine CurrentSince Sep 6, 2018 Accepting new patients
Integrative Emergency Services Physician Group-Houston PLLC Emergency Medicine CurrentSince Apr 1, 2020 Accepting new patients
Baylor College of Medicine CurrentSince Sep 6, 2018 Accepting new patients
Baylor College of Medicine CurrentSince Sep 1, 2018 Accepting new patients
Baylor College of Medicine CurrentSince Sep 1, 2018 Accepting new patients
Baylor College of Medicine Past Accepting new patients
Texas Children'S Hospital Past Accepting new patients

Locations

6621 Fannin St
Houston, TX 77030
Phone (832) 824-1866

7200 Cambridge St
Fl 1
Houston, TX 77030
Phone (713) 798-3924

7200 Cambridge St
#B
Houston, TX 77030
Phone (713) 798-3498

1504 Taub Loop
#621
Houston, TX 77030

7200 Cambridge St
Houston, TX 77030
Phone (713) 798-2400

7200 Cambridge St
Fl 10
Houston, TX 77030
Phone 7137981750 ext. 2

1504 Taub Loop
#285
Houston, TX 77030
Phone (713) 873-2626

6701 Fannin St
Houston, TX 77030
Phone (832) 822-1764

6621 Fannin St
Ste A210
Houston, TX 77030
Phone (832) 824-5497

2 Greenway Plz
Ste 900
Houston, TX 77046
Phone (713) 798-1835

1504 Taub Loop
Houston, TX 77030
Phone (713) 873-2860

540 Interstate 45 S
Ste E
Huntsville, TX 77340
Phone (936) 755-8288

5161 E Sam Houston Pkwy S
Pasadena, TX 77505
Phone (281) 810-9326

11713 Shadow Creek Pkwy
Pearland, TX 77584
Phone (713) 793-4600

17400 St Lukes Way
The Woodlands, TX 77384
Phone (936) 266-4055

6651 Main St
Va Hospital, TX 77030
Phone (832) 826-3000

6720 Bertner Ave
Va Hospital, TX 77030
Phone (713) 785-8537

Organizations & group practices 8

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.

Hospital & facility affiliations 1

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1412294400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760054400000",
    "number": "1205239332",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6621 FANNIN ST STE A210",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770302358",
            "telephone_number": "832-824-1000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6621 FANNIN ST",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770302358",
            "telephone_number": "832-824-1000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "6720 Bertner Ave",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770302604",
            "country_code": "US",
            "telephone_number": "832-355-2666",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "7200 Cambridge St",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770304202",
            "country_code": "US",
            "telephone_number": "713-798-2400",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "455 1st Ave",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100169102",
            "country_code": "US",
            "telephone_number": "713-818-6043",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HARDING",
        "first_name": "STEPHEN",
        "middle_name": "ALEXANDER",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-10-03",
        "last_updated": "2025-10-10",
        "certification_date": "2025-10-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080T0002X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Medical Toxicology",
            "state": "NY",
            "license": "286783-1",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "TX",
            "license": "R7754",
            "primary": true
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "NY",
            "license": "286783-1",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207PT0002X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine, Medical Toxicology",
            "state": "NY",
            "license": "286783-1",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Houston, TX

Sources for this page

Verify at the official NPI Registry.