Individual provider Active NPI

Gregory James Harbison, MD

  • Orthopaedic Surgery Physician
  • Houston, TX
National Provider Identifier
1801425822
Registry record updated Jul 10, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Orthopaedic Surgery PhysicianTaxonomy code 207X00000X
License
V6947 Issued in TX
Practice address
6400 Fannin St Ste 1700
Houston, TX 77030-1526
Phone
(713) 486-5527
NPI assigned
Apr 2, 2020
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 10, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Orthopaedic Surgery Physician 207X00000X A183430 CA
Orthopaedic Surgery Physician 207X00000X V6947 TX Primary

Addresses

Primary practice location

6400 Fannin St Ste 1700
Houston, TX 77030-1526

Mailing address

6400 Fannin St Ste 1700
Houston, TX 77030-1526

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
I20250728001794 TX Practitioner - Orthopedic Surgery 5496128589 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Orthopedic Surgery
Education
Other, 2020
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Ut PhysiciansGroup PAC ID 8426960360, 1,744 clinicians

Practice addresses (Care Compare)

23900 Katy Fwy
Katy, TX 77494-1323
Phone (281) 644-7000

5420 W Loop S
Suite 2400
Bellaire, TX 77401-2107
Phone (713) 486-3550

6410 Fannin St
Houston, TX 77030-3005

6411 Fannin St
Houston, TX 77030-1501
Phone (713) 704-0093

6431 Fannin St
MSB2.100
Houston, TX 77030-1501
Phone (713) 500-7700

9250 Pinecroft Dr
Shenandoah, TX 77380-3218
Phone (713) 897-2300

Hospital & facility affiliations

  • Memorial Hermann - Texas Medical Center Hospital, Houston, TX, CCN 450068
  • Memorial Hermann Katy Hospital Hospital, Katy, TX, CCN 450847

Procedures performed for Medicare patients

ProcedureNumber of procedures
Spinal fusion70
Laminectomy or laminotomy (partial removal of spine bones)28

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A183430CAMDOrthopaedic Surgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Ut Physicians CurrentSince Aug 1, 2025 Accepting new patients
Ut Physicians CurrentSince Aug 1, 2025 Accepting new patients

Locations

6410 Fannin St
Ste 500
Houston, TX 77030
Phone (713) 500-5714

6410 Fannin St
#135
Houston, TX 77030

6400 Fannin St
Ste 1700
Houston, TX 77030
Phone (713) 486-5527

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.

Hospital & facility affiliations 3

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": "1585785600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752105600000",
    "number": "1801425822",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6400 FANNIN ST STE 1700",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770301526"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6400 FANNIN ST STE 1700",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770301526",
            "telephone_number": "713-486-5527"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HARBISON",
        "first_name": "GREGORY",
        "middle_name": "JAMES",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-04-02",
        "last_updated": "2025-07-10",
        "certification_date": "2025-07-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "CA",
            "license": "A183430",
            "primary": false
        },
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "TX",
            "license": "V6947",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Houston, TX

Sources for this page

Verify at the official NPI Registry.