Quick answers
- Does Sebastien Lalonde accept Medicare assignment?
- Yes. Medicare's clinician data says Sebastien Lalonde accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Sebastien Lalonde see?
- In 2024, CMS data shows 179 Original Medicare patients and 501 services for Sebastien Lalonde. This counts Original Medicare only and measures volume, not quality.
- What is Sebastien Lalonde's NPI number?
- 1861990731. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Sebastien Lalonde, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 179 |
|---|---|
| Services billed to Medicare | 501 |
| Different services or procedures | 73 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)96 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)61 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)53 services
- Release and/or relocation of hand nerve (64721)40 services
- Aspiration and/or injection of fluid from small joint (20600)34 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- Arthritis72%
- High blood pressure70%
- High cholesterol56%
- Diabetes33%
- Depression27%
- Anxiety22%
Hospitals where Sebastien Lalonde works
Medicare's Facility Affiliation Data lists Sebastien Lalonde at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Lake Regional Health SystemOsage Beach, MO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 260186
- University of Missouri Health CareColumbia, MO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 260141
Practice locations
Addresses where Sebastien Lalonde is enrolled with Medicare (CMS data updated October 2, 2026).
- 1100 Virginia AveColumbia, MO 65212 (573) 882‑2667
Group practices
Medicare enrollment lists Sebastien Lalonde as a member of this group (CMS data updated October 2, 2026).
- The Curators of the University of Missouri1,131 clinicians in the group
Specialties
- Hand Surgeryprimary
- Orthopedic Surgeryalso
Other hand surgeons in Columbia
Clinicians with the same Medicare primary specialty in Columbia, MO — not a recommendation.
Other clinicians in The Curators of the University of Missouri
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2011 (15 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1861990731 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians