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Internal Medicine - Hematology Specialists in Houston, TX

Browse 46 Internal Medicine - Hematology providers listed in NPPES with a practice address in Houston, Texas.

46 Healthcare Providers

How Houston compares with the U.S.

Houston has 2.0 clinicians in Internal Medicine - Hematology per 100,000 residents, 4.5 times the U.S. rate of 0.4.

That is 46 active clinicians in Internal Medicine - Hematology with a practice address in Houston, for a population of 2,328,253.

The Texas rate is 0.2 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.

97% of clinicians in Internal Medicine - Hematology in Houston listed in the CMS Medicare file (35 of 36) accept Medicare assignment. That is similar to the Texas share of 95%.

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.

61% of clinicians in Internal Medicine - Hematology in Houston listed in the CMS Medicare file (22 of 36) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the Texas share of 57%.

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 - Hematology Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine - Hematology practitioners in Houston, TX

Source: CMS PECOS
PECOS Enrolled Specialists 37 In Houston, TX
Part B Lab & Imaging Eligible 37 Diagnostic Referrals
DME Ordering Eligible 37 Durable Medical Equipment
Home Health Agency Referrals 37 HHA Ordering Eligible
Showing 1โ€“20 of 46 providers
With recent CMS data first, then Aโ€“Z

Dr. Tareq Abuasab , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1919 Old Spanish Trail, Houston, TX 77054
Phone: 8329576500
NPI Identifier 1598430043
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Dr. Yosra M Aljawai , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1515 Holcombe Blvd, Houston, TX 770304000
Phone: 7137926161
NPI Identifier 1508355256
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Dr. Yesid Alvarado Valero , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1515 Holcombe Blvd, Houston, TX 770304009
Phone: 7137926161
NPI Identifier 1982876272
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Dr. Effrosyni Apostolidou , MD, PhD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1515 Holcombe Blvd, Houston, TX 770304000
Phone: 7137926161
NPI Identifier 1386872687
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Dr. Kelty Ruth Baker , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
6560 Fannin, Ste 1260, Houston, TX 77030
Phone: 7137970466
NPI Identifier 1710090857
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Dr. Robert Clinton Bast , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment
1515 Holcombe Blvd, Houston, TX 770304000
Phone: 7137926161
NPI Identifier 1013901008
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Dr. Alex Bataller Torralba , MD, PhD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1515 Holcombe Blvd, Houston, TX 770304000
Phone: 7137926161
NPI Identifier 1003536889
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Dr. Alexandre Bazinet , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment
1515 Holcombe Blvd, Houston, TX 770304000
Phone: 7137926161
NPI Identifier 1669045514
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Dr. George Carrum , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment
6551 Bertner Ave Fl Wt15, Houston, TX 770302807
Phone: 7134411450
NPI Identifier 1851471288
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Dr. George Liwei Chen , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1515 Holcombe Blvd, Houston, TX 770304000
Phone: 7137926161
NPI Identifier 1366757775
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Dr. Miguel A Escobar , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment
6410 Fannin St, 500, Houston, TX 770303000
Phone: 8323257111
NPI Identifier 1437177912
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Dr. Harish Eswaran , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment
7000 Fannin St Ste 750, Houston, TX 770305400
Phone: 7135008360
NPI Identifier 1386107720
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Dr. Warren Benjamin Fingrut , MD, ABIM

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1515 Holcombe Blvd, Houston, TX 770304000
Phone: 7137926161
NPI Identifier 1922615665
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Dr. Johnathan Fraebel , MD

Internal Medicine - Hematology

Active NPI Status
1919 Old Spanish Trl Fl 6, Houston, TX 770542003
Phone: 7137983750
NPI Identifier 1013537208
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Dr. Siddhartha Ganguly , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
6445 Main Street, Opc Floor 24, Houston, TX 77030
Phone: 7134419948
NPI Identifier 1689767261
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Dr. Ryan Huey , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1515 Holcombe Blvd, Houston, TX 770304000
Phone: 7137926161
NPI Identifier 1104182609
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Dr. Modupe Idowu , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment
6400 Fannin St Ste 2900, Houston, TX 770301555
Phone: 7137043961
NPI Identifier 1407048267
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Dr. Alexandra P Ikeguchi , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1515 Holcombe Blvd, Houston, TX 770304000
Phone: 7137926161
NPI Identifier 1962402321
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Dr. Swaminathan Padmanabhan Iyer , MD

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1515 Holcombe Blvd, Houston, TX 770304009
Phone: 7137926161
NPI Identifier 1063493229
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Maida Riva Palapos Jamir

Internal Medicine - Hematology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
6410 Fannin St Ste 600, Houston, TX 770305206
Phone: 7134865660
NPI Identifier 1922716133
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Frequently Asked Questions about Internal Medicine - Hematology in Houston

How do I check a Internal Medicine - Hematology 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.