LOUMA BASMA RUSTAM MD
NPI 1164918140
Internal Medicine - Gastroenterology in League City, TX

Q: What is Louma Rustam's NPI number?

The NPI number for Louma Rustam is 1164918140. It was assigned to this individual provider in the NPPES registry on July 2, 2018.

Q: What is Louma Rustam's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Louma Rustam was last updated on March 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 02, 2018PECOS EnrolledAccepts Medicare Assignment

2240 GULF FWY S STE 2.100, LEAGUE CITY, TX 77573(832) 505-1600(281) 309-0419 Get Directions Write a Review

NPPES record last updated: March 23, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 23, 2026, Jul 10, 2024, Mar 2, 2021 and 1 more (4 updates tracked since 2018).

On this page

About Louma Basma Rustam Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

LOUMA BASMA RUSTAM MD (NPI 1164918140) is an individual gastroenterology provider in League City, Texas, licensed in Texas (V2251) and active in the NPI registry since July 2018. She is enrolled in Medicare PECOS, is affiliated with University Of Texas Medical Branch Galveston, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1164918140

Entity TypeIndividualFemale

Primary Taxonomy207RG0100X

Provider Legal NameLOUMA BASMA RUSTAMCredential: MD

Location Address2240 GULF FWY S STE 2.100League City, TX 77573-5143

Mailing AddressPo Box 2758Waterloo, IA 50704-2758 · (319) 235-5390

Phone(832) 505-1600

Fax(281) 309-0419

Sole ProprietorNo

Medical School CMSOtherGraduated 2021

Enumeration DateJuly 2, 2018

Last NPPES UpdateMarch 23, 20264 updates tracked since enumeration

NPPES CertifiedMarch 23, 2026

✔ NPI 1164918140 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

Licenses✔ Licensed in TX · V2251✔ Licensed in IA · MD-53111

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

2240 GULF FWY S STE 2.100, League City, TX 77573

Open in Google Maps ↗

Secondary Practice Locations 2

Location 1200 Hawkins DrIowa City, IA 52242-1009 · Phone (319) 356-3603

Location 21015 S Hackett RdWaterloo, IA 50701-3543 · Phone (319) 234-5990

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Oscar Insurance Company, WellPoint.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Louma Basma Rustam Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8123370939

PECOS Enrollment IDI20240903002002

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Louma Rustam reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Utmb Faculty Group Practice

23 mi

General Practice

301 UNIVERSITY BLVD
Galveston, TX 77555

Reassigned Medicare billing, Texas enrollment
2,222 clinicians in this Medicare group

NPI 1942241146 (409) 772-2222

Allen Memorial Hospital Corporation

913 mi

Emergency Medicine

1825 LOGAN AVE
Waterloo, IA 50703

Reassigned Medicare billing, Iowa enrollment
273 clinicians in this Medicare group

NPI 1346292521 (319) 235-3941

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

51 services51 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

37 services33 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

33 services33 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

27 services27 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

15 services15 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

14 services14 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Texas Medical Branch Galveston

Acute Care Hospitals · Galveston, TX

3/5 CMS rating

OwnershipGovernment - State

CMS Certification Number450018

Location301 University BoulevardGalveston, TX 77555 · Galveston County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77573 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$131.16 typical visit price

range $57.19 – $173.07

Typical copayment $32.79 (range $14.29 – $43.26)

Most-billed visit code 99204

Established Patient

$100.90 typical visit price

range $18.45 – $141.36

Typical copayment $25.22 (range $4.61 – $35.34)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier12 claims12 services$12.89 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier12 claims12 services$61.89 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RICHARD MICHAEL WARNEKE M.D.

Internal Medicine (Gastroenterology)