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Colon & Rectal Surgery Specialists in San Antonio, TX

Browse 22 Colon & Rectal Surgery providers listed in NPPES with a practice address in San Antonio, Texas.

22 Healthcare Providers

How San Antonio compares with the U.S.

San Antonio has 1.5 clinicians in Colon & Rectal Surgery per 100,000 residents, 2.1 times the U.S. rate of 0.7.

That is 22 active clinicians in Colon & Rectal Surgery with a practice address in San Antonio, for a population of 1,479,835.

The Texas rate is 0.7 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 Colon & Rectal Surgery in San Antonio listed in the CMS Medicare file (18 of 18) 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.

17% of clinicians in Colon & Rectal Surgery in San Antonio listed in the CMS Medicare file (3 of 18) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower than the Texas share of 33%.

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).

Colon & Rectal Surgery Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Colon & Rectal Surgery practitioners in San Antonio, TX

Source: CMS PECOS
PECOS Enrolled Specialists 20 In San Antonio, TX
Part B Lab & Imaging Eligible 20 Diagnostic Referrals
DME Ordering Eligible 20 Durable Medical Equipment
Home Health Agency Referrals 20 HHA Ordering Eligible
Showing 1โ€“20 of 22 providers
With recent CMS data first, then Aโ€“Z

Dr. Mario Alberto Alcantara , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment
225 E Sonterra Blvd Ste 215, San Antonio, TX 782583886
Phone: 2103147872
NPI Identifier 1609039049
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Dr. Christopher De Jesus , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment
8300 Floyd Curl Dr, San Antonio, TX 782293931
Phone: 2104509200
NPI Identifier 1184019374
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Dr. Brano Djenic , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1200 Brooklyn Ave Ste 115, San Antonio, TX 782124815
Phone: 2102246563
NPI Identifier 1649537556
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Michael Tracey Finucan

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment
311 Camden St Ste 501, San Antonio, TX 782152015
Phone: 2102126202
NPI Identifier 1609230259
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Dr. Seema Izfar , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment
1200 Brooklyn Ave Ste 150, San Antonio, TX 782124815
Phone: 2102124114
NPI Identifier 1982930335
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Dr. Richard Blair Jackson , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment
7950 Floyd Curl Dr, Ste 101, San Antonio, TX 782293916
Phone: 2106140880
NPI Identifier 1164432357
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Dr. Clark Michael Kardys , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment
7950 Floyd Curl Dr, Suite 101, San Antonio, TX 78229
Phone: 2106140880
NPI Identifier 1578763009
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Dr. Michael A Keller , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
7950 Floyd Curl Dr Ste 101, Medical Tower I, San Antonio, TX 782293916
Phone: 2106140880
NPI Identifier 1659572824
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Dr. William Cannon Lewis , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment
18707 Hardy Oak Blvd Ste 210, San Antonio, TX 782584803
Phone: 2105932500
NPI Identifier 1437237369
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Dr. Alicia Josephine Logue , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment
7979 Wurzbach Rd, San Antonio, TX 782294427
Phone: 2104505990
NPI Identifier 1841491313
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Dr. Maria L. Martinez Ugarte , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment
730 Pleasanton Rd, San Antonio, TX 78214
Phone: 2109213800
NPI Identifier 1346424264
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Dr. Jaime Lopez Mayoral , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment
1200 Brooklyn Ave., Ste 150, San Antonio, TX 782124815
Phone: 2102124114
NPI Identifier 1689677916
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Dr. Tamara J Merchant-Mccambry , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment
1162 E Sonterra Blvd Ste 210, San Antonio, TX 782584049
Phone: 2107877097
NPI Identifier 1235183526
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Dr. James Prieto , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment
5510-B Presidio Parkway, Suite 2206, San Antonio, TX 78249
Phone: 2108743640
NPI Identifier 1154580769
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Dr. Raul Ramos , MD

Colon & Rectal Surgery

Active NPI Status
540 Madison Oak Dr, Suite 370, San Antonio, TX 782583943
Phone: 2106141600
NPI Identifier 1629076096
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Dr. Randall D Rogers , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1303 Mccullough Ave, Suite 265, San Antonio, TX 782125609
Phone: 2102240402
NPI Identifier 1679659791
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Dr. Rolando Humberto Saenz , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment
311 Camden St Ste 501, San Antonio, TX 782152015
Phone: 2102126202
NPI Identifier 1316962723
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Dr. John H Winston , MD

Colon & Rectal Surgery

Active NPI Status Accepts Medicare Assignment
19288 Stone Oak Pkwy, A, San Antonio, TX 782583222
Phone: 2104902828
NPI Identifier 1356357255
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Dr. William E Bode , MD

Colon & Rectal Surgery

Active NPI Status
7950 Floyd Curl Dr, Ste 101, San Antonio, TX 782293916
Phone: 2106140880
NPI Identifier 1891705075
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Dr. Kristie A. Chiscano , MD

Colon & Rectal Surgery

Active NPI Status
315 N San Saba, Suite 1240, San Antonio, TX 782073154
Phone: 2102124114
NPI Identifier 1366442048
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Frequently Asked Questions about Colon & Rectal Surgery in San Antonio

How do I check a Colon & Rectal Surgery 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.