Active NPI
Louma Basma Rustam, MD
- Gastroenterology Physician
- League City, TX
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Gastroenterology Physician
- License
- V2251
- Practice address
- 2240 Gulf Fwy S Ste 2.100
League City, TX 77573-5143 - Phone
- (832) 505-1600
- Fax
- (281) 309-0419
- NPI assigned
- Jul 2, 2018
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Gastroenterology Physician | 207RG0100X | MD-53111 | IA | |
| Gastroenterology Physician | 207RG0100X | V2251 | TX | Primary |
Addresses
Primary practice location
2240 Gulf Fwy S Ste 2.100
League City, TX 77573-5143
Mailing address
PO Box 2758
Waterloo, IA 50704-2758
Phone (319) 235-5390
Other practice location 1
200 Hawkins Dr
Iowa City, IA 52242-1009
Phone (319) 356-3603
Other practice location 2
1015 S Hackett Rd
Waterloo, IA 50701-3543
Phone (319) 234-5990
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in IA, TX
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Gastroenterology
- Education
- Other, 2021
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
2240 Gulf Fwy S
Suite 2.100
League City, TX 77573-5143
Phone (832) 505-1800
Hospital & facility affiliations
- University of Texas Medical Branch Galveston
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Colonoscopy | 22 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 26 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| MD-53111 | IA | MD | Gastroenterology Physician |
| V2251 | TX | MD | Gastroenterology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Allen Memorial Hospital Corporation | Current | Accepting new patients | |
| Allen Memorial Hospital Corporation | Current | Accepting new patients | |
| Utmb Faculty Group Practice | Current | Accepting new patients | |
| Floyd County Memorial Hospital Commission | Past | Accepting new patients |
Locations
1600 1st St E
Independence, IA 50644
Phone (319) 332-0999
1825 Logan Ave
Waterloo, IA 50703
Phone (319) 235-3886
301 University Blvd
Galveston, TX 77555
Phone (409) 747-1883
2240 Gulf Fwy S
Ste 2100
League City, TX 77573
Phone (832) 505-1600
Interoperability endpoints
- lrustam69603@direct.utmb.edu
Organizations & group practices 4
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.
-
- General Practice Physician
- Galveston, TX
- NPI 1942241146
-
- Women's Health Nurse Practitioner
- Waterloo, IA
- NPI 1891772927
-
- Emergency Medicine Physician
- Waterloo, IA
- NPI 1346292521
-
- Critical Access Hospital
- Charles City, IA
- NPI 1265402390
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Galveston, TX
- NPI 1548226988
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1530489600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1774224000000",
"number": "1164918140",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 2758",
"city": "WATERLOO",
"state": "IA",
"postal_code": "507042758",
"telephone_number": "319-235-5390"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2240 GULF FWY S STE 2.100",
"city": "LEAGUE CITY",
"state": "TX",
"postal_code": "775735143",
"telephone_number": "832-505-1600",
"fax_number": "281-309-0419"
}
],
"practiceLocations": [
{
"address_1": "200 Hawkins Dr",
"address_purpose": "LOCATION",
"city": "Iowa City",
"state": "IA",
"postal_code": "522421009",
"country_code": "US",
"telephone_number": "319-356-3603",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "1015 S Hackett Rd",
"address_purpose": "LOCATION",
"city": "Waterloo",
"state": "IA",
"postal_code": "507013543",
"country_code": "US",
"telephone_number": "319-234-5990",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "RUSTAM",
"first_name": "LOUMA",
"middle_name": "BASMA",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2018-07-02",
"last_updated": "2026-03-23",
"certification_date": "2026-03-23",
"status": "A"
},
"taxonomies": [
{
"code": "207RG0100X",
"taxonomy_group": "",
"desc": "Internal Medicine, Gastroenterology",
"state": "IA",
"license": "MD-53111",
"primary": false
},
{
"code": "207RG0100X",
"taxonomy_group": "",
"desc": "Internal Medicine, Gastroenterology",
"state": "TX",
"license": "V2251",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in League City, TX
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 23, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.