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General surgeons who accept Medicare in Watertown, SD
CMS lists 8 clinicians in this specialty with a practice address in Watertown. Accept Medicare assignment (the Medicare-approved amount as full payment): 8. Offer telehealth: 0.
Typical amounts Medicare approves in ZIP 57201 (2024 Medicare rates, the latest CMS has published): a new-patient visit $85, of which you pay about $21; a follow-up visit $69, of which you pay about $17 — 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.
Amy Bair
✓ Accepts Medicare assignmentMIPS score (2024): 94.9/100Graduated 2009FemaleDrug and device company payments (2025): $43Gregory M. Gerrish, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.6/100Graduated 2011 · Sanford School of Medicine of University of South DakotaMaleOther offices in Watertown: 1Drug and device company payments (2025): $268Kristopher Johnson, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.6/100Graduated 2019MaleDrug and device company payments (2025): $2,235Alan R. Christensen, MD
✓ Accepts Medicare assignmentMIPS score (2024): 84.8/100Graduated 1997MaleOther offices in Watertown: 1Kelly A. Ming, MD
✓ Accepts Medicare assignmentMIPS score (2024): 84.8/100Graduated 2009FemaleDrug and device company payments (2025): $3,963Alejandro J. Luis, MD
✓ Accepts Medicare assignmentGraduated 2006MaleOther offices in Watertown: 1Drug and device company payments (2025): $83Gina M. Risty, MD
✓ Accepts Medicare assignmentGraduated 2000FemaleOther offices in Watertown: 1Jacob S. Schaeffer, MD
✓ Accepts Medicare assignmentGraduated 2011 · Sanford School of Medicine of University of South DakotaMaleOther offices in Watertown: 1Drug and device company payments (2025): $212
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 Watertown
- Primary care doctors28
- Nurse practitioners45
- Cardiologists6
- Orthopedic surgeons8
- Ophthalmologists3
- Optometrists8
- Podiatrists3
- Psychologists3
- Therapists and counselors17
- Physical therapists17
- Occupational therapists6
- Audiologists3
- Chiropractors14
- Gynecologists4
Other care in Watertown
Hospitals · Nursing homes · Dialysis centers · 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).