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Gastroenterologists who accept Medicare in San Antonio, TX
CMS lists 84 clinicians in this specialty with a practice address in San Antonio. Accept Medicare assignment (the Medicare-approved amount as full payment): 82. Offer telehealth: 30.
Typical amounts Medicare approves in ZIP 78229 (2024 Medicare rates, the latest CMS has published): a new-patient visit $126, of which you pay about $32; a follow-up visit $97, of which you pay about $24 — the 20% coinsurance after the yearly Part B deductible. Clinicians who don't accept assignment can charge up to 15% more; with a Medicare Advantage plan, your plan's copay applies instead.
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Order: clinicians who accept assignment first, then by MIPS score (highest first), then by last name.
Fernando E. Membreno, MD
✓ Accepts Medicare assignmentMIPS score (2024): 98.1/100Graduated 1994MaleOther offices in San Antonio: 3Drug and device company payments (2025): $115,709Karolina N. Dziadkowiec, MD
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100Graduated 2017FemaleDrug and device company payments (2025): $3,538Jerome Edelson, MD
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100Graduated 2016 · Medical University of South Carolina College of MedicineMaleDrug and device company payments (2025): $628Mahesh Gajendran, MD
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100✓ TelehealthGraduated 2005MaleDrug and device company payments (2025): $802Paul Kaimakliotis, MD
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100Graduated 2016MaleDrug and device company payments (2025): $1,842Sandeep N. Patel, MD
✓ Accepts Medicare assignmentMIPS score (2024): 96.6/100✓ TelehealthGraduated 2001 · Kansas City University of Med & Biosciences, College of Osteo MedMaleDrug and device company payments (2025): $32,034Gary S. Gossen, MD
✓ Accepts Medicare assignmentMIPS score (2024): 86/100✓ TelehealthGraduated 1975MaleDrug and device company payments (2025): $342Russell Havranek, MD
✓ Accepts Medicare assignmentMIPS score (2024): 86/100✓ TelehealthGraduated 1998 · University of Nebraska College of MedicineMaleOther offices in San Antonio: 1Drug and device company payments (2025): $1,676Nicholas P. Martinez, MD
✓ Accepts Medicare assignmentMIPS score (2024): 86/100✓ TelehealthGraduated 2010MaleDrug and device company payments (2025): $1,532Bassem Mazloum, MD
✓ Accepts Medicare assignmentMIPS score (2024): 86/100✓ TelehealthGraduated 1987MaleOther offices in San Antonio: 1Drug and device company payments (2025): $301Charles W. Randall
✓ Accepts Medicare assignmentMIPS score (2024): 86/100✓ TelehealthGraduated 1988 · University of Texas Medical Branch at GalvestonMaleOther offices in San Antonio: 1Drug and device company payments (2025): $125,557Allison Sirakos, MD
✓ Accepts Medicare assignmentMIPS score (2024): 86/100✓ TelehealthGraduated 2016 · University of Texas Southwestern Medical School at DallasFemaleOther offices in San Antonio: 1Drug and device company payments (2025): $1,117John A. Vizuete, MD
✓ Accepts Medicare assignmentMIPS score (2024): 86/100✓ TelehealthGraduated 2012 · University of Texas Medical School at San AntonioMaleDrug and device company payments (2025): $1,907Victor F. Zurita, MD
✓ Accepts Medicare assignmentMIPS score (2024): 86/100✓ TelehealthGraduated 1989MaleOther offices in San Antonio: 1Drug and device company payments (2025): $3,080Desh B. Sharma, MD
✓ Accepts Medicare assignmentMIPS score (2024): 85.6/100Graduated 1998MaleDrug and device company payments (2025): $807Omer Junaidi, MD
✓ Accepts Medicare assignmentMIPS score (2024): 84.5/100Graduated 2000MaleDrug and device company payments (2025): $523Kamran Safdar, MD
✓ Accepts Medicare assignmentMIPS score (2024): 84.5/100Graduated 1992MaleDrug and device company payments (2025): $496Kavitha R. Thudi, MD
✓ Accepts Medicare assignmentMIPS score (2024): 84.5/100Graduated 2001MaleDrug and device company payments (2025): $235James D. Alvarez, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100✓ TelehealthGraduated 2018 · University of Texas Medical School at San AntonioMaleOther offices in San Antonio: 1Drug and device company payments (2025): $1,386John Alvarez, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100✓ TelehealthGraduated 2012 · University of Texas Medical School at San AntonioMaleOther offices in San Antonio: 1Drug and device company payments (2025): $1,457Balaji K. Ayyar, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100✓ TelehealthGraduated 2013 · University of Texas Medical School at San AntonioMaleDrug and device company payments (2025): $1,197Jeff S. Bullock, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100Graduated 1997 · Texas Tech University Health Science Center School of MedicineMaleDrug and device company payments (2025): $3,622Abhishek Challa, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100Graduated 2011MaleDrug and device company payments (2025): $2,471Eddie Flores, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100✓ TelehealthGraduated 1989 · University of Texas Southwestern Medical School at DallasMaleOther offices in San Antonio: 1Drug and device company payments (2025): $649Kevin J. Franklin, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100✓ TelehealthGraduated 1993 · Uniformed Services Uhs Fe Hebert School of MedMaleDrug and device company payments (2025): $3,086Amit Goyal, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100Graduated 1997MaleDrug and device company payments (2025): $709Ernesto C. Guerra Jr., MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100✓ TelehealthGraduated 1976 · University of California, San Diego School of MedicineMaleDrug and device company payments (2025): $1,682Bijo K. John, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100Graduated 2004MaleDrug and device company payments (2025): $850Joseph E. Johnson IV, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100✓ TelehealthGraduated 1983 · University of Texas Southwestern Medical School at DallasMaleOther offices in San Antonio: 2Drug and device company payments (2025): $171David P. Jones, DO
✓ Accepts Medicare assignmentMIPS score (2024): 81/100✓ TelehealthGraduated 1996MaleOther offices in San Antonio: 1Drug and device company payments (2025): $1,813Elissa Lin, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100✓ TelehealthGraduated 2018 · New York University School of MedicineFemaleOther offices in San Antonio: 1Drug and device company payments (2025): $713Chaithanya Mallikarjun, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100✓ TelehealthGraduated 2014 · Tulane University School of MedicineFemaleDrug and device company payments (2025): $2,095Donna M. McMyler, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100✓ TelehealthGraduated 2002 · University of Texas Medical School at HoustonFemaleDrug and device company payments (2025): $1,524Paresh Mehta, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100Graduated 2008MaleJadesola I. Omoyeni, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100Graduated 2007FemaleDrug and device company payments (2025): $1,948Richard L. Otero, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100Graduated 1978 · University of Texas Southwestern Medical School at DallasMaleDrug and device company payments (2025): $1,364Harsh D. Patel, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100✓ TelehealthGraduated 2015MaleOther offices in San Antonio: 1Drug and device company payments (2025): $4,276Babusai B. Rapaka, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100✓ TelehealthGraduated 2016 · University of Texas Medical School at San AntonioMaleDrug and device company payments (2025): $299Antonio Serna IV, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100Graduated 2002 · University of Texas Southwestern Medical School at DallasMaleDrug and device company payments (2025): $820Mohammad R. Taheri, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100Graduated 1999MaleDrug and device company payments (2025): $1,057Gregg L. Wendorf, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81/100✓ TelehealthGraduated 2013MaleOther offices in San Antonio: 1Drug and device company payments (2025): $2,565Cari K. Sorrell, MD
✓ Accepts Medicare assignmentMIPS score (2024): 78.5/100Graduated 2011 · University of Texas Medical School at HoustonFemaleJan Petrasek, MD
✓ Accepts Medicare assignmentMIPS score (2024): 76.9/100Graduated 2020MaleDrug and device company payments (2025): $655Seema A. Dar, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75.8/100Graduated 1986FemaleDrug and device company payments (2025): $146Joycelyn M. Theard, MD
✓ Accepts Medicare assignmentMIPS score (2024): 74.5/100✓ TelehealthGraduated 1973 · Harvard Medical SchoolFemaleDrug and device company payments (2025): $1,285Layth H. Alzubaidy, MD
✓ Accepts Medicare assignmentGraduated 2019 · University of Texas Medical Branch at GalvestonMaleOther offices in San Antonio: 1Drug and device company payments (2025): $956Hopethe H. Baker, MD
✓ Accepts Medicare assignmentGraduated 2004 · Baylor College of MedicineFemaleDrug and device company payments (2025): $33Myriam S. Barragan, MD
✓ Accepts Medicare assignmentGraduated 1993FemaleDrug and device company payments (2025): $465Brenda M. Briones, MD
✓ Accepts Medicare assignmentGraduated 2013FemaleMarco A. Bustamante Bernal, MD
✓ Accepts Medicare assignmentGraduated 2009MaleDrug and device company payments (2025): $1,476Prabhleen Chahal, MD
✓ Accepts Medicare assignmentGraduated 1998FemaleOther offices in San Antonio: 1Drug and device company payments (2025): $21,560Alfredo Chavez, MD
✓ Accepts Medicare assignmentGraduated 1991MaleDrug and device company payments (2025): $436Mark J. Cossentino, MD
✓ Accepts Medicare assignmentGraduated 1996 · Georgetown University School of MedicineMaleDrug and device company payments (2025): $646Souleymane Y. Diallo, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2013MaleOther offices in San Antonio: 6Drug and device company payments (2025): $23Juan F. Echavarria, MD
✓ Accepts Medicare assignmentGraduated 2005MaleDrug and device company payments (2025): $167Sepideh Farzin Moghadam, MD
✓ Accepts Medicare assignmentGraduated 1998FemaleDrug and device company payments (2025): $4,903Angel Gonzalez, MD
✓ Accepts Medicare assignmentGraduated 2001MaleDrug and device company payments (2025): $101Ricardo Hernandez, MD
✓ Accepts Medicare assignmentGraduated 1981MaleDrug and device company payments (2025): $222Sameer Datta Kandhi, MD
✓ Accepts Medicare assignmentGraduated 2018MaleFarah H. Ladak, MD
✓ Accepts Medicare assignmentGraduated 2016FemaleOther offices in San Antonio: 1Carmen E. Landaverde, MD
✓ Accepts Medicare assignmentGraduated 2003 · University of California, Davis School of MedicineFemaleDrug and device company payments (2025): $103,564Eric Lawitz, MD
✓ Accepts Medicare assignmentGraduated 1993 · Rush Medical College of Rush UniversityMaleOther offices in San Antonio: 1Drug and device company payments (2025): $206,113Gabriel A. Magraner, MD
✓ Accepts Medicare assignmentGraduated 1987 · University of Puerto Rico School of MedicineMaleOther offices in San Antonio: 1Drug and device company payments (2025): $43Albert P. Manudhane, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2019MaleDrug and device company payments (2025): $257Sarah L. Marucci, MD
✓ Accepts Medicare assignmentGraduated 2015 · University of Texas Southwestern Medical School at DallasFemaleMeher Sindhoora Mavuram, MD
✓ Accepts Medicare assignmentGraduated 2007 · Oakland College of Medicine and SurgeryFemaleDrug and device company payments (2025): $1,656Charles B. Miller, MD
✓ Accepts Medicare assignmentGraduated 2005 · Loyola University of Chicago, Stritch School of MedicineMaleOther offices in San Antonio: 1Drug and device company payments (2025): $83Orestes Moldes-Rodriguez, MD
✓ Accepts Medicare assignmentGraduated 1987 · University Central del Caribe Escuela de MedicinaMaleDrug and device company payments (2025): $753Emuejevoke J. Okoh, MD
✓ Accepts Medicare assignmentGraduated 2003 · University of Missouri, Columbia School of MedicineMaleDrug and device company payments (2025): $19Alexis H. Pavle, MD
✓ Accepts Medicare assignmentGraduated 2014 · Wayne State University School of MedicineFemaleOther offices in San Antonio: 1Drug and device company payments (2025): $503Fred Poordad, MD
✓ Accepts Medicare assignmentGraduated 1990MaleOther offices in San Antonio: 2Drug and device company payments (2025): $193Ruben Ramirez, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2002MaleDrug and device company payments (2025): $19,890Patrick T. Reeves, MD
✓ Accepts Medicare assignmentGraduated 2016 · University of Texas Medical Branch at GalvestonMaleDrug and device company payments (2025): $7,976Jason P. Rocha, MD
✓ Accepts Medicare assignmentGraduated 2014 · University of Texas Medical School at San AntonioMaleOther offices in San Antonio: 6Drug and device company payments (2025): $331Laura A. Rosenkranz, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1995FemaleOther offices in San Antonio: 1Hari P. Sayana, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2000MaleDrug and device company payments (2025): $8,518Patrick Snyder, MD
✓ Accepts Medicare assignmentGraduated 2013 · University of Texas Southwestern Medical School at DallasMaleOther offices in San Antonio: 1Erin K. Spengler, MD
✓ Accepts Medicare assignmentGraduated 2009 · University of Iowa, RJ & L Carver College of MedicineFemaleEugenia Tsai, MD
✓ Accepts Medicare assignmentGraduated 2012 · Albany Medical College of Union UniversityFemaleDrug and device company payments (2025): $613Obinna Ukabam, MD
✓ Accepts Medicare assignmentGraduated 2009MaleRandy P. Wright, MD
✓ Accepts Medicare assignmentGraduated 2004 · University of Texas Medical School at San AntonioMaleOther offices in San Antonio: 5Drug and device company payments (2025): $163Pradeep Yarra, MD
✓ Accepts Medicare assignmentGraduated 2005MaleOther offices in San Antonio: 1Drug and device company payments (2025): $374Sylvia E. Keiser, DO
May accept assignmentGraduated 2020FemaleDrug and device company payments (2025): $449Saatchi M. Kuwelker, MD
May accept assignmentGraduated 2018FemaleOther offices in San Antonio: 1Drug and device company payments (2025): $32
Before you book
This list comes from Medicare's enrollment records, not from reviews. Call the office to confirm the clinician is taking new Medicare patients. With Original Medicare, a clinician who accepts assignment can only charge you the Medicare deductible and coinsurance; one who doesn't may charge up to 15% more than the Medicare-approved amount. If you have a Medicare Advantage plan, check that the clinician is in the plan's network.
The MIPS final score (0–100) comes from Medicare's Merit-based Incentive Payment System for 2024. It combines quality measures, cost, improvement activities and use of certified health records, and it sets a payment adjustment. Clinicians who report as a group share the group's score. It is not a patient rating, and many clinicians have no published score.
Payments from drug and medical device companies come from CMS Open Payments (2025 general payments: meals, travel, consulting and speaking fees, gifts and similar), summed for each clinician. Receiving payments is legal and common and does not mean a clinician did anything wrong.
Other specialists in San Antonio
- Primary care doctors1,366
- Geriatricians13
- Nurse practitioners1,862
- Cardiologists214
- Dermatologists91
- Orthopedic surgeons154
- Neurologists187
- Ophthalmologists140
- Optometrists244
- Podiatrists95
- Urologists64
- Pulmonologists86
- Nephrologists89
- Endocrinologists35
- Rheumatologists29
- ENT doctors63
- Oncologists98
- Psychiatrists189
- Psychologists149
- Therapists and counselors839
- Physical therapists421
- Occupational therapists67
- Speech therapists47
- Audiologists40
- Chiropractors82
- Gynecologists214
- General surgeons138
- Vascular surgeons42
- Pain management doctors52
- Physiatrists63
- Allergists30
- Dietitians35
- Neurosurgeons42
- Infectious disease doctors52
Other care in San Antonio
Hospitals · Nursing homes · Dialysis centers · Home health agencies · Hospices
Nearby cities
Enrollment, addresses and scores are as reported to CMS and can change. This is not a list of in-network providers for any Medicare Advantage plan, and it is not medical advice. Source: CMS Provider Data Catalog — Doctors and Clinicians National Downloadable File, Clinician MIPS Performance 2024 and Facility Affiliation Data (released Oct 2, 2026).