NPIMap

Individual provider Active NPI

Margaret Lang-Williams, M.D.

  • Internal Medicine Physician
  • Houston, TX
National Provider Identifier
1255389847
Registry record updated Mar 27, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
H1720 Issued in TX
Practice address
921 Gessner Rd FL 8
Houston, TX 77024-2501
Phone
(281) 516-0212
NPI assigned
May 5, 2006
Last updated
Mar 27, 2025By the provider in NPPES
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Mar 27, 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 H1720 TX Primary
Hospitalist Physician 208M00000X H1720 TX

Addresses

Primary practice location

921 Gessner Rd FL 8
Houston, TX 77024-2501

Mailing address

909 Frostwood Dr Ste 1.100
Houston, TX 77024-2301
Phone (713) 338-6363

Other practice location 1

2501 Jimmy Johnson Blvd
Port Arthur, TX 77640-2007
Phone (409) 727-7342

Other identifiers 3

IdentifierTypeStateIssuer
084927501MedicaidTX
82051JOtherTXBLUE CROSS/BLUE SHIELD ID
76-0443198OtherTXTAX IDENTIFICATION NUMBER

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
I20100812000482 TX Practitioner - Internal MedicinePractitioner - Family PracticePractitioner - Hospitalist 9638124266 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal MedicineAlso: Hospitalist
Education
Tufts University School of Medicine, 1984
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Tomball Regional Internal Medicine AssociatesGroup PAC ID 0042384695, 2 clinicians

Practice addresses (Care Compare)

13414 Medical Complex Dr
Tomball, TX 77375-3333
Phone (281) 516-0212

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
H1720TXMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Memorial Hermann Medical Group Internal Medicine CurrentSince Sep 9, 2019 Accepting new patients
Ipc Healthcare Services of Texas, PLLC Internal Medicine CurrentSince Apr 1, 2017 Accepting new patients
Tomball Regional Internal Medicine Associates Internal Medicine CurrentSince Sep 9, 2013 Accepting new patients
Hospital Medicine Associates of TX PA Internal Medicine CurrentSince Nov 15, 2017 Accepting new patients
Tower Medical Center of Port Neches Internal Medicine PastSince Sep 1, 2004 Accepting new patients

Locations

1505 E Winding Way Dr
Ste 200
Friendswood, TX 77546
Phone (713) 366-7800

1635 North Loop W
Houston, TX 77008
Phone (713) 867-2066

1801 North Loop W
Ste 30
Houston, TX 77008
Phone (713) 802-9781

909 Frostwood Dr
Ste 1100
Houston, TX 77024
Phone (713) 338-4523

915 Gessner Rd
Ste 100
Houston, TX 77024
Phone (713) 242-2222

921 Gessner Rd
Fl 8
Houston, TX 77024
Phone (281) 516-0212

18951 N Memorial Dr
Humble, TX 77338
Phone (281) 319-8409

2900 S Loop 256
Palestine, TX 75801
Phone (903) 731-1021

11800 Astoria Blvd
Pearland, TX 77089
Phone (281) 929-6100

16100 South Fwy
Pearland, TX 77584
Phone (713) 413-5000

3203 Broadway St
Pearland, TX 77581
Phone (281) 485-8876

111 Dallas St
San Antonio, TX 78205
Phone (210) 297-7000

13414 Medical Complex Dr
Ste 6
Tomball, TX 77375
Phone (281) 351-0211

Interoperability endpoints

  • Direct secure messaging: clinicalinbox@trima.directbygreenway.com
  • FHIR API: https://fhir-api.fhirprod.aws.greenwayhealth.com/fhir/R4/2.16.840.1.113883.3.140.70505

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 10

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": "1146787200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1743033600000",
    "number": "1255389847",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "909 FROSTWOOD DR STE 1.100",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770242301",
            "telephone_number": "713-338-6363"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "921 GESSNER RD FL 8",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770242501",
            "telephone_number": "281-516-0212"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2501 Jimmy Johnson Blvd",
            "address_purpose": "LOCATION",
            "city": "Port Arthur",
            "state": "TX",
            "postal_code": "776402007",
            "country_code": "US",
            "telephone_number": "409-727-7342",
            "fax_number": "409-722-0958",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LANG-WILLIAMS",
        "first_name": "MARGARET",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2006-05-05",
        "last_updated": "2025-03-27",
        "certification_date": "2025-03-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "H1720",
            "primary": true
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "TX",
            "license": "H1720",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "084927501",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS/BLUE SHIELD ID",
            "identifier": "82051J",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TAX IDENTIFICATION NUMBER",
            "identifier": "76-0443198",
            "state": "TX"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Houston, TX

Sources for this page

Verify at the official NPI Registry.