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Primary care doctors who accept Medicare in Coffeyville, KS
CMS lists 7 clinicians in this specialty with a practice address in Coffeyville. Accept Medicare assignment (the Medicare-approved amount as full payment): 7. Offer telehealth: 0.
Typical amounts Medicare approves in ZIP 67337 (2024 Medicare rates, the latest CMS has published): a new-patient visit $122, of which you pay about $31; a follow-up visit $94, 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.
John H. Carson, MD
✓ Accepts Medicare assignmentMIPS score (2024): 77.8/100Graduated 2012MaleOther offices in Coffeyville: 1Drug and device company payments (2025): $16James L. Christensen, DO
✓ Accepts Medicare assignmentMIPS score (2024): 77.8/100Graduated 1980 · University of Missouri, Kansas City, School of MedicineMaleOther offices in Coffeyville: 2Drug and device company payments (2025): $657Shravan Gangula, MD
✓ Accepts Medicare assignmentMIPS score (2024): 77.8/100Graduated 2007MaleDrug and device company payments (2025): $960Kolette L. Smith, MD
✓ Accepts Medicare assignmentMIPS score (2024): 77.8/100Graduated 1996 · University of Kansas School of Med (kc/wich/sal)FemaleOther offices in Coffeyville: 1Drug and device company payments (2025): $16Frances Horn, DO
✓ Accepts Medicare assignmentGraduated 1996 · Oklahoma State University College of Osteopathic MedicineFemaleDrug and device company payments (2025): $35Garrett Koehn, MD
✓ Accepts Medicare assignmentGraduated 2022 · University of Kansas School of Med (kc/wich/sal)MaleDrug and device company payments (2025): $282Julie Stewart, MD
✓ Accepts Medicare assignmentGraduated 2006 · University of Kansas School of Med (kc/wich/sal)FemaleDrug and device company payments (2025): $23
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.
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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).