Quick answers
- Does Tenner J. Guillaume accept Medicare assignment?
- Yes. Medicare's clinician data says Tenner J. Guillaume 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 Tenner J. Guillaume see?
- In 2024, CMS data shows 17 Original Medicare patients and 39 services for Tenner J. Guillaume. This counts Original Medicare only and measures volume, not quality.
- What is Tenner J. Guillaume's NPI number?
- 1215133129. 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 Tenner J. Guillaume, 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 | 17 |
|---|---|
| Services billed to Medicare | 39 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 32 |
Hospitals where Tenner J. Guillaume works
Medicare's Facility Affiliation Data lists Tenner J. Guillaume 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.
- Gillette Childrens Specialty HospitalSaint Paul, MN · Children's Hospital · Emergency services: not listed by Medicare · CCN 243300
Practice locations
Addresses where Tenner J. Guillaume is enrolled with Medicare (CMS data updated October 2, 2026).
- 200 University Ave ESaint Paul, MN 55101 (651) 291‑2848
- 435 Phalen BlvdSaint Paul, MN 55130 (651) 636‑9443
Group practices
Medicare enrollment lists Tenner J. Guillaume as a member of this group (CMS data updated October 2, 2026).
- Gillette Childrens Specialty Healthcare99 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Saint Paul
Clinicians with the same Medicare primary specialty in Saint Paul, MN — not a recommendation.
Other clinicians in Gillette Childrens Specialty Healthcare
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Minnesota Medical School |
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1215133129 |
| 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