Individual provider Active NPI

An Thien Tang, M.D.

  • Internal Medicine Physician
  • Houston, TX
National Provider Identifier
1841357589
Registry record updated Mar 5, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
M5537 Issued in TX
Practice address
11978 Westheimer Rd Ste B
Houston, TX 77077-6669
Phone
(832) 406-4160
Fax
(855) 540-2516
NPI assigned
Jan 2, 2007
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 5, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X M5537 TX Primary

Addresses

Primary practice location

11978 Westheimer Rd Ste B
Houston, TX 77077-6669

Mailing address

4700 Millenia Blvd Ste 650
Orlando, FL 32839-6013
Phone (407) 533-6836

Other names 1

  • Andrew Tang Other name

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address an.tang.1@29601.direct.athenahealth.com

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
I20080430000174 TX Practitioner - Internal Medicine 4183703341 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Baylor College of Medicine, 2003
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Centerwell Senior Primary Care TX PAGroup PAC ID 4789950247, 111 clinicians

Practice addresses (Care Compare)

545 Gulfgate Ctr Mall
Houston, TX 77087-3023
Phone (281) 846-7209

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Centerwell Senior Primary Care (TX) PA Internal Medicine CurrentSince Apr 1, 2023 Accepting new patients
Centerwell Senior Primary Care (TX) PA Internal Medicine Current Accepting new patients
Centerwell Senior Primary Care (SC) PC Internal Medicine CurrentSince Jan 1, 2021 Accepting new patients
Centerwell Senior Primary Care (TX) PA Internal Medicine CurrentSince Apr 1, 2023 Accepting new patients
Conviva Medical Center Management of Texas, P.a. Internal Medicine CurrentSince Jan 1, 2021 Accepting new patients
Timothy T Tang MD PA Internal Medicine Past Accepting new patients

Locations

6101 Waterford District Dr
Ste 200
Miami, FL 33126
Phone (407) 533-6836

4700 Millenia Blvd
Ste 650
Orlando, FL 32839
Phone (407) 533-6837

381 S Loop 336 W
Ste 900
Conroe, TX 77304
Phone (936) 703-1827

917 S Port Ave
Ste 116
Corpus Christi, TX 78405

917 S Port Ave
Corpus Christi, TX 78405
Phone (361) 883-1879

260 US Highway 181 N
Floresville, TX 78114
Phone (830) 393-8222

545 Gulfgate Center Mall
Houston, TX 77087
Phone (281) 846-7209

11978 Westheimer Rd
Ste B
Houston, TX 77077
Phone (346) 275-6750

3915 Spencer Hwy
Pasadena, TX 77504
Phone (713) 265-6955

8555 Memorial Blvd
Ste 100
Port Arthur, TX 77640
Phone (409) 237-6480

18414 US Highway 281 N
Ste 104
San Antonio, TX 78259
Phone (210) 354-0800

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 and National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1167696000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772668800000",
    "number": "1841357589",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4700 MILLENIA BLVD STE 650",
            "city": "ORLANDO",
            "state": "FL",
            "postal_code": "328396013",
            "telephone_number": "407-533-6836",
            "fax_number": "407-232-9316"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11978 WESTHEIMER RD STE B",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770776669",
            "telephone_number": "832-406-4160",
            "fax_number": "855-540-2516"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TANG",
        "first_name": "AN",
        "middle_name": "THIEN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-01-02",
        "last_updated": "2026-03-05",
        "certification_date": "2026-03-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "M5537",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "an.tang.1@29601.direct.athenahealth.com",
            "affiliation": "N",
            "address_1": "11978 Westheimer Rd Ste B",
            "city": "Houston",
            "state": "TX",
            "country_code": "US",
            "postal_code": "770776669",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "ANDREW",
            "last_name": "TANG",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in Houston, TX

Sources for this page

Verify at the official NPI Registry.