Independent US Healthcare Provider Directory & Public Medical Database Patient Guides
Medical Specialty Listing

Internal Medicine - Infectious Diseases in Sugar Land, TX

Browse 13 Internal Medicine - Infectious Disease providers listed in NPPES with a practice address in Sugar Land, Texas.

13 Healthcare Providers

How Sugar Land compares with the U.S.

Sugar Land has 12 clinicians in Internal Medicine - Infectious Disease per 100,000 residents, 3.7 times the U.S. rate of 3.2.

That is 13 active clinicians in Internal Medicine - Infectious Disease with a practice address in Sugar Land, for a population of 110,016.

The Texas rate is 2.2 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Internal Medicine - Infectious Disease in Sugar Land listed in the CMS Medicare file (11 of 11) accept Medicare assignment. That is higher than the Texas share of 94%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

18% of clinicians in Internal Medicine - Infectious Disease in Sugar Land listed in the CMS Medicare file (2 of 11) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower than the Texas share of 36%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Internal Medicine - Infectious Disease Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine - Infectious Disease practitioners in Sugar Land, TX

Source: CMS PECOS
PECOS Enrolled Specialists 13 In Sugar Land, TX
Part B Lab & Imaging Eligible 13 Diagnostic Referrals
DME Ordering Eligible 13 Durable Medical Equipment
Home Health Agency Referrals 13 HHA Ordering Eligible
Showing 1โ€“13 of 13 providers
With recent CMS data first, then Aโ€“Z

Dr. Eloho Ajayi , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment
7616 Branford Pl Ste 220, Sugar Land, TX 774793794
Phone: 2818453081
NPI Identifier 1346692902
View Full Profile

Dr. Ambreen Allana , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment
14100 Southwest Fwy Ste 500, Sugar Land, TX 774783483
Phone: 3463332356
NPI Identifier 1790167161
View Full Profile

Dr. Sarfraz Aly , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
6903 Brisbane Ct Ste 100, Sugar Land, TX 774796845
Phone: 8328864994
NPI Identifier 1972766327
View Full Profile

Dr. John Moser Butler , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment
16659 Southwest Fwy Ste 371, Sugar Land, TX 774792375
Phone: 2812650760
NPI Identifier 1427028430
View Full Profile

Dr. Edwin Chen , MD, PhD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment
14100 Southwest Fwy Ste 500, Sugar Land, TX 774783483
Phone: 3463332356
NPI Identifier 1619405149
View Full Profile

Dr. Irene M Ekaney , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment
16659 Southwest Fwy Ste 371, Sugar Land, TX 774792375
Phone: 2812650760
NPI Identifier 1639120827
View Full Profile

Dr. Barkat Ali Fazal , MD, MPHTM

Internal Medicine - Infectious Disease

Active NPI Status
16659 Southwest Freeway, Mob 2, Suite 371, Sugar Land, TX 77479
Phone: 2812650760
NPI Identifier 1619074721
View Full Profile

Dr. Joyce Jia-Ann Johnsrud , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment
14100 Southwest Fwy Ste 400, Sugar Land, TX 774783465
Phone: 3463332356
NPI Identifier 1528401163
View Full Profile

Dr. Obiageli Clare Obijiofor , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment
16659 Southwest Fwy Ste 371, Sugar Land, TX 774792375
Phone: 2812650760
NPI Identifier 1245200393
View Full Profile

Dr. Sushma Singh , MBBS

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment
14100 Southwest Fwy Ste 500, Sugar Land, TX 774783483
Phone: 3463332356
NPI Identifier 1245493360
View Full Profile

Dr. Khadija Tayabali , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment
14100 Southwest Fwy Ste 500, Sugar Land, TX 774783483
Phone: 3463332356
NPI Identifier 1144751439
View Full Profile

Dr. Syeda Zainab Wasti , MD

Internal Medicine - Infectious Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
14100 Southwest Fwy Ste 500, Sugar Land, TX 774783483
Phone: 3463332356
NPI Identifier 1528471141
View Full Profile

Dr. Anh Thi Nguyen , MD

Internal Medicine - Infectious Disease

Active NPI Status
5 Pecan Gorge Ct, Sugar Land, TX 774795935
Phone: 8327416105
NPI Identifier 1275534976
View Full Profile

Frequently Asked Questions about Internal Medicine - Infectious Disease in Sugar Land

How do I check a Internal Medicine - Infectious Disease practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Texas licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.