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Gastroenterologists who accept Medicare in Alton, IL
CMS lists 17 clinicians in this specialty with a practice address in Alton. Accept Medicare assignment (the Medicare-approved amount as full payment): 17. Offer telehealth: 3.
Typical amounts Medicare approves in ZIP 62002 (2024 Medicare rates, the latest CMS has published): a new-patient visit $131, of which you pay about $33; a follow-up visit $100, of which you pay about $25 — 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.
Hadiatou Barry, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100Graduated 2017FemaleDrug and device company payments (2025): $4,068Ayodele Osowo, MD
✓ Accepts Medicare assignmentMIPS score (2024): 95.2/100Graduated 1997MaleDrug and device company payments (2025): $762Edmundo A. Rodriguez-Frias, MD
✓ Accepts Medicare assignmentMIPS score (2024): 78.6/100✓ TelehealthGraduated 2002MaleDrug and device company payments (2025): $2,505Olufemi Abiodun, MD
✓ Accepts Medicare assignmentGraduated 1995MaleDrug and device company payments (2025): $780Russ Arjal, MD
✓ Accepts Medicare assignmentGraduated 2002MaleBrian Borg, MD
✓ Accepts Medicare assignmentGraduated 1992MaleDrug and device company payments (2025): $10,608Tarika Chowdhary, MD
✓ Accepts Medicare assignmentGraduated 2017FemaleDrug and device company payments (2025): $17Mohammad Tarik A. Firozi, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1990MaleDrug and device company payments (2025): $43Tariq Hassan, MD
✓ Accepts Medicare assignmentGraduated 1989MaleOther offices in Alton: 1Drug and device company payments (2025): $619Ahmad A. Karadaghy, MD
✓ Accepts Medicare assignmentGraduated 1996MaleDrug and device company payments (2025): $155Diego Lim, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2009MaleDrug and device company payments (2025): $416David Lotsoff, MD
✓ Accepts Medicare assignmentGraduated 1997 · Washington University School of MedicineMaleDrug and device company payments (2025): $471Nina Nandy, MD
✓ Accepts Medicare assignmentGraduated 2009FemaleOther offices in Alton: 1Drug and device company payments (2025): $48Mark Pankonin, MD
✓ Accepts Medicare assignmentGraduated 2008 · Wayne State University School of MedicineMaleDrug and device company payments (2025): $43Anuj Sharma, MD
✓ Accepts Medicare assignmentGraduated 2010 · Virginia Commonwealth University, School of MedicineMaleDrug and device company payments (2025): $199Abhijeet Waghray, MD
✓ Accepts Medicare assignmentGraduated 2012MaleSandeep Walia, MD
✓ Accepts Medicare assignmentGraduated 2010MaleDrug and device company payments (2025): $185
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 Alton
- Primary care doctors115
- Nurse practitioners141
- Cardiologists41
- Orthopedic surgeons10
- Neurologists9
- Ophthalmologists5
- Optometrists17
- Podiatrists9
- Urologists10
- Pulmonologists6
- Nephrologists7
- Oncologists6
- Psychiatrists3
- Therapists and counselors32
- Physical therapists9
- Occupational therapists5
- Chiropractors10
- Gynecologists7
- General surgeons7
- Vascular surgeons4
- Infectious disease doctors4
Other care in Alton
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).