Individual provider Active NPI

Katherine Williams, M.D.

  • Ophthalmology Physician
  • Houston, TX
National Provider Identifier
1326492588
Registry record updated Feb 6, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Ophthalmology PhysicianTaxonomy code 207W00000X
License
S6554 Issued in TX
Practice address
1977 Butler Blvd FL 2
Houston, TX 77030-4101
Phone
(713) 798-6100
NPI assigned
Apr 14, 2016
Last updated
Feb 6, 2026By the provider in NPPES
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Feb 6, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X
Ophthalmology Physician 207W00000X S6554 TX Primary
Ophthalmic Plastic and Reconstructive Surgery Physician 207WX0200X S6554 TX

Addresses

Primary practice location

1977 Butler Blvd FL 2
Houston, TX 77030-4101

Mailing address

1977 Butler Blvd FL 2
Houston, TX 77030-4101

Other practice location 1

6701 Fannin St Fl 5
Houston, TX 77030-2608
Phone (832) 824-1000

Other identifiers 2

IdentifierTypeStateIssuer
411638605MedicaidTX
411638606MedicaidTX

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
I20200625002911 TX Practitioner - Ophthalmology 0042632747 Reassigns benefits to 4 organizations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
S6554TXMDOphthalmology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Baylor College of Medicine CurrentSince Jun 1, 2020 Accepting new patients
Physicians Referral Service CurrentSince Jul 2, 2021 Accepting new patients
Baylor College of Medicine CurrentSince Jun 1, 2020 Accepting new patients
Baylor College of Medicine CurrentSince Jun 1, 2020 Accepting new patients
Texas Children's Physician Group CurrentSince Apr 21, 2022 Accepting new patients
Baylor College of Medicine Ophthalmology CurrentSince Jun 1, 2020 Accepting new patients

Locations

1102 Bates Ave
Ste 1440
Houston, TX 77030
Phone (832) 824-1065

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

1515 Holcombe Blvd
Houston, TX 77030
Phone (713) 794-5446

1515 Holcombe Blvd
#M
Houston, TX 77030
Phone (713) 792-6127

1515 Holcombe Blvd
#R4212
Houston, TX 77030
Phone (713) 794-5446

1977 Butler Blvd
Houston, TX 77030
Phone (713) 798-4857

1977 Butler Blvd
Fl 2
Houston, TX 77030
Phone (713) 798-7321

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

6701 Fannin St
Fl 5
Houston, TX 77030
Phone (832) 822-3200

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

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

Interoperability endpoints

  • Direct secure messaging: kwilliams202687@utmdandersoncc.direct-ci.com
  • Direct secure messaging: kwilliams338618@directhoustonmethodist.org

Organizations & group practices 6

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

NPI Registry JSON

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

{
    "created_epoch": "1460592000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770336000000",
    "number": "1326492588",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1977 BUTLER BLVD FL 2",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770304101"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1977 BUTLER BLVD FL 2",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770304101",
            "telephone_number": "713-798-6100"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "6701 Fannin St Fl 5",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770302608",
            "country_code": "US",
            "telephone_number": "832-824-1000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "KATHERINE",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2016-04-14",
        "last_updated": "2026-02-06",
        "certification_date": "2026-02-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "TX",
            "license": "S6554",
            "primary": true
        },
        {
            "code": "207WX0200X",
            "taxonomy_group": "",
            "desc": "Ophthalmology, Ophthalmic Plastic and Reconstructive Surgery",
            "state": "TX",
            "license": "S6554",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "411638605",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "411638606",
            "state": "TX"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Houston, TX

Sources for this page

Verify at the official NPI Registry.