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

Ophthalmology - Retina Specialists in Houston, TX

Browse 16 Ophthalmology - Retina Specialist providers listed in NPPES with a practice address in Houston, Texas.

16 Healthcare Providers

How Houston compares with the U.S.

Houston has 0.7 Ophthalmology - Retina Specialists per 100,000 residents, about 1.4 times the U.S. rate of 0.5.

That is 16 active Ophthalmology - Retina Specialists with a practice address in Houston, for a population of 2,328,253.

The Texas rate is 0.4 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 Ophthalmology - Retina Specialists in Houston listed in the CMS Medicare file (14 of 14) accept Medicare assignment. That is similar to the Texas share of 98%.

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.

None of the 14 Ophthalmology - Retina Specialists in Houston listed in the CMS Medicare file have a CMS telehealth indicator. Some may still offer telehealth; ask the office.

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@t-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of November 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).

Ophthalmology - Retina Specialist Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Ophthalmology - Retina Specialist practitioners in Houston, TX

Source: CMS PECOS
PECOS Enrolled Specialists 14 In Houston, TX
Part B Lab & Imaging Eligible 14 Diagnostic Referrals
DME Ordering Eligible 14 Durable Medical Equipment
Home Health Agency Referrals 14 HHA Ordering Eligible
Showing 1โ€“16 of 16 providers
With recent CMS data first, then Aโ€“Z

Dr. John Jose Alappatt , MD

Ophthalmology - Retina Specialist

Active NPI Status Accepts Medicare Assignment
7789 Southwest Fwy Ste 530, Houston, TX 770741834
Phone: 2814952222
NPI Identifier 1568409688
View Full Profile

Dr. Keith Alan Bourgeois , MD

Ophthalmology - Retina Specialist

Active NPI Status Accepts Medicare Assignment
1315 St Joseph Pkwy, Suite 1601, Houston, TX 770028233
Phone: 7136500391
NPI Identifier 1457312183
View Full Profile

Dr. Petros Euthymiou Carvounis , MD

Ophthalmology - Retina Specialist

Active NPI Status Accepts Medicare Assignment
6655 Travis St Ste 560, Houston, TX 770301316
Phone: 7136374408
NPI Identifier 1669527537
View Full Profile

Dr. Garvin H Davis , MD

Ophthalmology - Retina Specialist

Active NPI Status Accepts Medicare Assignment
6400 Fannin St, Suite 1800, Houston, TX 770301521
Phone: 7135595200
NPI Identifier 1154480382
View Full Profile

Dr. Jaafar El Annan , MD

Ophthalmology - Retina Specialist

Active NPI Status Accepts Medicare Assignment
6550 Mapleridge St Ste 125, Houston, TX 770814600
Phone: 3462226626
NPI Identifier 1457511818
View Full Profile

Dr. Richard Fish , MD

Ophthalmology - Retina Specialist

Active NPI Status
6560 Fannin St, Ste 750, Houston, TX 770302727
Phone: 7135243434
NPI Identifier 1881792844
View Full Profile

Dr. Jie Gao , MD

Ophthalmology - Retina Specialist

Active NPI Status Accepts Medicare Assignment
7789 Southwest Fwy Ste 530, Houston, TX 770741834
Phone: 2814952222
NPI Identifier 1669882221
View Full Profile

Dr. Rabia Karani , MD

Ophthalmology - Retina Specialist

Active NPI Status Accepts Medicare Assignment
6431 Fannin St, Houston, TX 770301501
Phone: 7134869400
NPI Identifier 1609266477
View Full Profile

Dr. Michael Kai-Jia Lam , MD

Ophthalmology - Retina Specialist

Active NPI Status Accepts Medicare Assignment
7789 Southwest Fwy Ste 530, Houston, TX 770741834
Phone: 2814952222
NPI Identifier 1548200835
View Full Profile

Dr. Ella Leung , MD

Ophthalmology - Retina Specialist

Active NPI Status Accepts Medicare Assignment
1977 Butler Blvd, Houston, TX 770304101
Phone: 7137986100
NPI Identifier 1316233034
View Full Profile

Henry Lin

Ophthalmology - Retina Specialist

Active NPI Status Accepts Medicare Assignment
7789 Southwest Fwy Ste 530, Houston, TX 770741834
Phone: 2814952222
NPI Identifier 1730573973
View Full Profile

Dr. John Whitesell Miller , MD

Ophthalmology - Retina Specialist

Active NPI Status Accepts Medicare Assignment
1315 St Joseph Pkwy, Suite 1601, Houston, TX 770028233
Phone: 7136500391
NPI Identifier 1578524286
View Full Profile

Dr. Sapa Pham , MD

Ophthalmology - Retina Specialist

Active NPI Status Accepts Medicare Assignment
7789 Southwest Fwy, Suite 530, Houston, TX 770741829
Phone: 2814952222
NPI Identifier 1487814398
View Full Profile

Dr. Marcus Ross Schatte , MD

Ophthalmology - Retina Specialist

Active NPI Status
55 Crain Square Blvd, Houston, TX 770251809
Phone: 7136685059
NPI Identifier 1891137345
View Full Profile

Dr. Lee T Tran , MD

Ophthalmology - Retina Specialist

Active NPI Status Accepts Medicare Assignment
7789 Southwest Fwy Ste 530, Houston, TX 770741834
Phone: 2814952222
NPI Identifier 1548403496
View Full Profile

Dr. Zhiyong Yang , MD, PhD

Ophthalmology - Retina Specialist

Active NPI Status Accepts Medicare Assignment
6400 Fannin St Ste 1800, Houston, TX 770301526
Phone: 7134869400
NPI Identifier 1053794784
View Full Profile

Frequently Asked Questions about Ophthalmology - Retina Specialist in Houston

How do I check a Ophthalmology - Retina Specialist 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.