Mark Langlois, M.D.
NPI 1295154656ActiveIndividual· Family Medicine· Frankfort, MI
Family Medicine (M.D.) with Great Lakes Therapy Housecalls PC, practicing in Frankfort, Michigan. Their prescriptions cost Medicare Part D more than their services did: $956,243 for 12,369 claims, against $141,133 paid for services in 2024. Lists Munson Healthcare Cadillac Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1295154656 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 14, 2014 |
| Last updated in NPPES | May 20, 2026 |
| Certified by provider | May 20, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 4301105292 | MI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 271 |
|---|---|
| Services billed | 1,853 across 12 procedure codes |
| Paid by Medicare | $141,133 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12,369 · 12,412 30-day fills |
|---|---|
| Patients | 376 |
| Total drug cost | $956,243 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Family Practice |
Medical group
- Great Lakes Therapy Housecalls PCTraverse City, MI · 73 clinicians
Hospital affiliations
- Munson Healthcare Cadillac HospitalCadillac, MI
- Munson Medical CenterTraverse City, MI
- Paul Oliver Memorial HospitalFrankfort, MI
Other facilities
- Bayside Wellness, LLCHospice · Traverse City, MI
- Heartland Hospice (Grand Rapids)Hospice · Grand Rapids, MI
- Hospice of Mecosta CountyHospice · Big Rapids, MI
- Maples Benzie County Medical CareNursing home · Frankfort, MI
- Paul Oliver Memorial Hospital LtcuNursing home · Frankfort, MI
- Wexford Senior Care CenterNursing home · Cadillac, MI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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