NPIMap

Individual provider Active NPI

Colville T. Williams

  • Nephrology Physician
  • Houston, TX
National Provider Identifier
1861490005
Registry record updated Oct 29, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nephrology PhysicianTaxonomy code 207RN0300X
License
J8419 Issued in TX
Practice address
915 Gessner Rd Ste 360
Houston, TX 77024-2540
Phone
(713) 468-5440
Fax
(713) 973-0778
NPI assigned
Jul 12, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 29, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Nephrology Physician 207RN0300X J8419 TX Primary

Addresses

Primary practice location

915 Gessner Rd Ste 360
Houston, TX 77024-2540

Mailing address

915 Gessner Rd Ste 360
Houston, TX 77024-2540
Phone (713) 468-5440

Other practice location 1

13219 Dotson Rd Ste 200
Houston, TX 77070-4308
Phone (281) 571-8090

Other practice location 2

1331 W Grand Pkwy N Ste 320
Katy, TX 77493-2711
Phone (713) 468-5440

Other practice location 3

10425 Huffmeister Rd Ste 420
Houston, TX 77065-3429
Phone (281) 571-8090

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20060301000540 TX Practitioner - NephrologyPractitioner - Internal Medicine 3375559222 Reassigns benefits to 1 organization
Practice locations: Houston, TX

Care Compare profile

Medicare Care Compare
Specialty
NephrologyAlso: Internal Medicine
Education
University of Texas Medical School at Houston, 1995
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Houston Nephrology Group, P.a.Group PAC ID 7113971243, 9 clinicians

Practice addresses (Care Compare)

915 Gessner Rd
Suite 360
Houston, TX 77024-2540
Phone 713465544020

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
J8419TXMDNephrology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Key Dialysis LLC PastSince Jul 30, 2014 Accepting new patients
C.T. Williams M.D .P.a, Specialist Past Accepting new patients
Wood Dialysis LLC PastSince Jul 1, 2020 Accepting new patients
Vital Podiatry PLLC PastSince Jul 1, 2022 Accepting new patients

Interoperability endpoints

  • Direct secure messaging: cwilliams170499@directhoustonmethodist.org

Organizations & group practices 5

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 8

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": "1121126400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761696000000",
    "number": "1861490005",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "915 GESSNER RD STE 360",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770242540",
            "telephone_number": "713-468-5440",
            "fax_number": "713-973-0778"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "915 GESSNER RD STE 360",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770242540",
            "telephone_number": "713-468-5440",
            "fax_number": "713-973-0778"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "13219 Dotson Rd Ste 200",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770704308",
            "country_code": "US",
            "telephone_number": "281-571-8090",
            "fax_number": "281-571-8095",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1331 W Grand Pkwy N Ste 320",
            "address_purpose": "LOCATION",
            "city": "Katy",
            "state": "TX",
            "postal_code": "774932711",
            "country_code": "US",
            "telephone_number": "713-468-5440",
            "fax_number": "713-973-0778",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "10425 Huffmeister Rd Ste 420",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770653429",
            "country_code": "US",
            "telephone_number": "281-571-8090",
            "fax_number": "281-571-8095",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "COLVILLE",
        "middle_name": "T.",
        "name_prefix": "Dr.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-07-12",
        "last_updated": "2025-10-29",
        "certification_date": "2025-10-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "TX",
            "license": "J8419",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Houston, TX

Sources for this page

Verify at the official NPI Registry.