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Primary care doctors who accept Medicare in San Marcos, TX
CMS lists 54 clinicians in this specialty with a practice address in San Marcos. Accept Medicare assignment (the Medicare-approved amount as full payment): 51. Offer telehealth: 18.
Typical amounts Medicare approves in ZIP 78666 (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.
Nicholas T. Lin, MD
✓ Accepts Medicare assignmentMIPS score (2024): 95.6/100Graduated 2008 · University of Texas Medical School at San AntonioMaleFilomeno P. Gonzalez Jr., MD
✓ Accepts Medicare assignmentMIPS score (2024): 91.9/100✓ TelehealthGraduated 2001 · University of Texas Medical Branch at GalvestonMaleDrug and device company payments (2025): $147Muhammad Junaid, MD
✓ Accepts Medicare assignmentMIPS score (2024): 90.6/100✓ TelehealthGraduated 2015MaleJulian H. Jimenez, MD
✓ Accepts Medicare assignmentMIPS score (2024): 89.5/100Graduated 2020 · University of Texas Medical Branch at GalvestonMaleDrug and device company payments (2025): $14Keith Glenn, MD
✓ Accepts Medicare assignmentMIPS score (2024): 88/100✓ TelehealthGraduated 2015 · University of Louisville School of MedicineMaleRaymond C. Paxton, MD
✓ Accepts Medicare assignmentMIPS score (2024): 82.7/100✓ TelehealthGraduated 1997 · Oregon Health Sciences University School of MedicineMaleDrug and device company payments (2025): $880Krystal Limsiaco, MD
✓ Accepts Medicare assignmentMIPS score (2024): 81.4/100Graduated 2015FemaleShivani Reddy, DO
✓ Accepts Medicare assignmentMIPS score (2024): 81.4/100Graduated 2020FemaleNimesh Patel, MD
✓ Accepts Medicare assignmentMIPS score (2024): 22.1/100Graduated 2004MaleDrug and device company payments (2025): $59Andy C. Wu, MD
✓ Accepts Medicare assignmentMIPS score (2024): 18.3/100Graduated 2001 · University of Texas Medical Branch at GalvestonMaleDrug and device company payments (2025): $102Muhammad Asghar, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2011MaleSana Azam, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2021 · Florida State University College of MedicineFemaleMariel Bagley, MD
✓ Accepts Medicare assignmentGraduated 2018 · Texas a & M University System, HSC, College of MedicineFemaleOther offices in San Marcos: 1Drug and device company payments (2025): $145Usha Bangalore Krishnappa, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2003FemaleHadeel Barrawi, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2020 · Kansas City University of Med & Biosciences, College of Osteo MedFemaleOther offices in San Marcos: 2Drug and device company payments (2025): $514Anthony P. Basel, DO
✓ Accepts Medicare assignmentGraduated 2013 · West Virginia School of Osteopathic MedicineMaleDrug and device company payments (2025): $69Gustavo Boeta-Lopez, MD
✓ Accepts Medicare assignmentGraduated 2022MaleOther offices in San Marcos: 1Rodolfo R. Canizales-Collazo, MD
✓ Accepts Medicare assignmentGraduated 2015 · University of Texas Medical Branch at GalvestonMaleDrug and device company payments (2025): $970Adriana D. Castillo, MD
✓ Accepts Medicare assignmentGraduated 2012FemaleDrug and device company payments (2025): $336Gregory Colon, MD
✓ Accepts Medicare assignmentGraduated 1991 · Texas Tech University Health Science Center School of MedicineMaleLynn Crocker, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2001 · Arizona College of Osteopathic Medicine Mid Western UniversityFemaleMichael Dickey, MD
✓ Accepts Medicare assignmentGraduated 1989 · University of Texas Medical Branch at GalvestonMaleSylvia Garcia Beach, MD
✓ Accepts Medicare assignmentGraduated 1990 · University of Illinois College of Med (chi/peor/rock/chm-Urb)FemaleJames Garrett, MD
✓ Accepts Medicare assignmentGraduated 1981MaleDrug and device company payments (2025): $57Sushanta K. Goswami, MD
✓ Accepts Medicare assignmentGraduated 1986MaleDrug and device company payments (2025): $45Mateo Houle, MD
✓ Accepts Medicare assignmentGraduated 2016 · Loyola University of Chicago, Stritch School of MedicineMaleAsaad G. Ishak, MD
✓ Accepts Medicare assignmentGraduated 2014MaleJohn R. Jackson, MD
✓ Accepts Medicare assignmentGraduated 1977 · University of Texas Medical School at HoustonMaleDrug and device company payments (2025): $39Neelam Khan, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2002FemaleDrug and device company payments (2025): $16Luke J. Kotin, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2021 · Texas Tech University Health Science Center School of MedicineMaleOther offices in San Marcos: 1Drug and device company payments (2025): $357Fang Jung Ku, DO
✓ Accepts Medicare assignmentGraduated 2022 · University of the Incarnate Word School of Osteo MedicineFemaleAlan L. Lee, MD
✓ Accepts Medicare assignmentGraduated 1996 · University of Texas Medical Branch at GalvestonMaleOther offices in San Marcos: 2Drug and device company payments (2025): $16Vip Mangalick, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2007MaleOther offices in San Marcos: 2Drug and device company payments (2025): $1,526Allison Marsh, MD
✓ Accepts Medicare assignmentGraduated 2018 · University of South Alabama College of MedicineFemaleDavid Martinez, MD
✓ Accepts Medicare assignmentGraduated 2018MaleJared McFarlin, DO
✓ Accepts Medicare assignmentGraduated 2014MaleScott P. McGlynn, DO
✓ Accepts Medicare assignmentGraduated 2000 · Philadelphia College of Osteopathic MedicineMaleDrug and device company payments (2025): $86Diego Moreno, MD
✓ Accepts Medicare assignmentGraduated 2012MaleDrug and device company payments (2025): $214Andre Morgan, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2009MaleDrug and device company payments (2025): $77Rama Krishna R. Mukkara Siva, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2003MaleEdiom Ogah, MD
✓ Accepts Medicare assignmentGraduated 1996 · Meharry Medical College School of MedicineMaleTara A. Pavelek, DO
✓ Accepts Medicare assignmentGraduated 2011 · University of North Texas HSC, College of Osteopathic MedFemaleDrug and device company payments (2025): $86Stephen G. Richardson, MD
✓ Accepts Medicare assignmentGraduated 2010 · Louisiana State University School of Medicine in ShreveportMaleNicole A. Riojas, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2011 · University of North Texas HSC, College of Osteopathic MedFemaleMichael J. Rosedale, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2008 · Western University of Health Sciences College of Dental MedMaleDrug and device company payments (2025): $33David L. Schneider, MD
✓ Accepts Medicare assignmentGraduated 1989 · Texas a & M University System, HSC, College of MedicineMaleDrug and device company payments (2025): $154Danial A. Soleja, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2015 · University of Texas Southwestern Medical School at DallasMaleDrug and device company payments (2025): $125Jason M. Thomas, MD
✓ Accepts Medicare assignmentGraduated 2015MaleDrug and device company payments (2025): $431Glen Vo, DO
✓ Accepts Medicare assignmentGraduated 2009MaleDavid Walden
✓ Accepts Medicare assignmentGraduated 2022 · University of Texas Medical Branch at GalvestonMaleJack W. Wallis, MD
✓ Accepts Medicare assignmentGraduated 1980MaleDrug and device company payments (2025): $82Munsif Ali, MD
May accept assignmentMIPS score (2024): 93.5/100✓ TelehealthGraduated 2006MaleEdmund Harris, MD
May accept assignmentGraduated 1980 · Wayne State University School of MedicineMaleOther offices in San Marcos: 1Gilbert Rodriguez Jr., MD
May accept assignmentGraduated 2013 · Texas a & M University System, HSC, College of MedicineMaleOther offices in San Marcos: 1
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 Marcos
- Nurse practitioners94
- Cardiologists10
- Orthopedic surgeons7
- Gastroenterologists9
- Ophthalmologists7
- Optometrists13
- Urologists5
- Nephrologists9
- ENT doctors3
- Oncologists4
- Psychiatrists7
- Psychologists6
- Therapists and counselors23
- Physical therapists26
- Pain management doctors5
- Physiatrists4
Other care in San Marcos
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).