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Gastroenterologists who accept Medicare in Lake Saint Louis, MO
CMS lists 23 clinicians in this specialty with a practice address in Lake Saint Louis. Accept Medicare assignment (the Medicare-approved amount as full payment): 23. Offer telehealth: 3.
Typical amounts Medicare approves in ZIP 63367 (2024 Medicare rates, the latest CMS has published): a new-patient visit $128, of which you pay about $32; a follow-up visit $98, 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.
Saad M. Zinad, MD
✓ Accepts Medicare assignmentMIPS score (2024): 98.2/100Graduated 2007MaleDrug and device company payments (2025): $163Kamran Qureshi, MD
✓ Accepts Medicare assignmentMIPS score (2024): 84.9/100Graduated 2011MaleDrug and device company payments (2025): $101,639Yazan A. Abdalla, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2005MaleDrug and device company payments (2025): $135Samer Al-Kaade, MD
✓ Accepts Medicare assignmentGraduated 1992MaleDrug and device company payments (2025): $10,711Youssef Assioun, MD
✓ Accepts Medicare assignmentGraduated 2003MaleDrug and device company payments (2025): $739Faiza Bhatti, MD
✓ Accepts Medicare assignmentGraduated 2005FemaleDrug and device company payments (2025): $1,246Carl F. Blatt Jr., MD
✓ Accepts Medicare assignmentGraduated 1980 · Georgetown University School of MedicineMaleDrug and device company payments (2025): $103Paul E. Buse, MD
✓ Accepts Medicare assignmentGraduated 1986 · Washington University School of MedicineMaleDrug and device company payments (2025): $14Michael J. Cleary, MD
✓ Accepts Medicare assignmentGraduated 1999 · Loyola University of Chicago, Stritch School of MedicineMaleJhony Y. Doumit, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2001MaleDrug and device company payments (2025): $2,003Adam D. Farmer, MD
✓ Accepts Medicare assignmentGraduated 2001MaleDrug and device company payments (2025): $98Layla Hajjafar, MD
✓ Accepts Medicare assignmentGraduated 2001 · Northeastern Ohio University College of MedicineFemaleElizabeth V. Marsicano, MD
✓ Accepts Medicare assignmentGraduated 2008 · University of Miami, LM Miller School of MedicineFemaleDrug and device company payments (2025): $235Mohhamed L. Omran, MD
✓ Accepts Medicare assignmentGraduated 1992MaleJohn R D. Peterson, MD
✓ Accepts Medicare assignmentGraduated 2006 · Tulane University School of MedicineMaleDrug and device company payments (2025): $29Rehan M. Rafiq, MD
✓ Accepts Medicare assignmentGraduated 1994MaleJoseph F. Rodemann, MD
✓ Accepts Medicare assignmentGraduated 2003 · Loyola University of Chicago, Stritch School of MedicineMaleSyed Tariq, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1991MalePriyanka Tiwari, MD
✓ Accepts Medicare assignmentGraduated 2002FemaleLaura Ulmer, DO
✓ Accepts Medicare assignmentGraduated 2013 · Kansas City University of Physicians and SurgeonsFemaleDrug and device company payments (2025): $148David Ulrich, MD
✓ Accepts Medicare assignmentGraduated 2003 · Indiana University School of MedicineMaleDrug and device company payments (2025): $123Edwardo D. Verzola, MD
✓ Accepts Medicare assignmentGraduated 1994 · University of Missouri, Kansas City, School of MedicineMaleDrug and device company payments (2025): $225Michael J. Zerega, MD
✓ Accepts Medicare assignmentGraduated 1997 · Washington University School of MedicineMaleDrug and device company payments (2025): $289
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 Lake Saint Louis
- Primary care doctors62
- Nurse practitioners76
- Cardiologists8
- Orthopedic surgeons5
- Neurologists3
- Optometrists6
- Podiatrists3
- Nephrologists4
- Oncologists7
- Therapists and counselors19
- Physical therapists20
- Audiologists4
- Gynecologists12
- General surgeons5
- Pain management doctors4
- Physiatrists8
Other care in Lake Saint Louis
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).