Mark Langlois, M.D.
Individual provider Active NPI Family Medicine Physician · Frankfort, MI
NPI 1295154656 · NPPES record last updated May 20, 2026
Key facts
- NPI
- 1295154656
- Entity type
- Individual (NPI type 1)
- Primary specialty
- Family Medicine Physician 207Q00000X
- License
- 4301105292 (MI)
- Practice address
- PO Box 1652
Frankfort, MI 49635-1652 - Phone
- (231) 955-9565
- Fax
- (231) 220-9568
- NPI assigned
- Apr 14, 2014
- Sex
- Male
- Sole proprietor
- Yes
Organizations & group practices 17
Hospital & facility affiliations 11
Owned or controlled facilities with NPI records 4
Medicare Care Compare profile
- Specialty
- Family Practice
- Education
- Other, 2013
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
- Great Lakes Therapy Housecalls PC
Practice addresses (Care Compare)
9731 E Cherry Bend Rd
Traverse City, MI 49684-7621
Phone (231) 941-8100
Hospital & facility affiliations
- Bayside Wellness, LLC
- Hospice of Mecosta County
- Heartland Hospice (Grand Rapids)
- Munson Healthcare Cadillac Hospital
- Paul Oliver Memorial Hospital
- Munson Medical Center
- Wexford Senior Care Center
- Maples Benzie County Medical Care
- Paul Oliver Memorial Hospital LTCU
- Medilodge of GTC
Medicare participation
- Medicare fee-for-service enrollment
- Enrolled in MI
- Eligible to order & refer
- Part B services: Yes · DME: Yes · Home health: Yes · Power mobility devices: Yes · Hospice: Yes
All facility ownership & control disclosures 4
| Facility | Type | Role | Since |
|---|---|---|---|
| Great Lakes Therapy |
Skilled nursing facility | Operational/Managerial Control Adp of the SNF |
Feb 1, 2020 Feb 1, 2020 |
| Maples-Benzie County Medical Care Facility |
Skilled nursing facility | Operational/Managerial Control Adp of the SNF |
Aug 1, 2018 Aug 1, 2018 |
| Bayside Wellness, LLC |
Home health agency | 5% Or Greater Direct Ownership Interest (100%) Corporate Officer Corporate Director Operational/Managerial Control |
May 10, 2022 May 10, 2022 May 10, 2022 May 10, 2022 |
| Bayside Wellness, LLC |
Hospice | Contracted Managing Employee 5% Or Greater Direct Ownership Interest (100%) Corporate Officer Corporate Director |
Apr 1, 2022 Apr 1, 2022 Apr 1, 2022 Apr 1, 2022 |
Medicare enrollment records
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20170706001188 | MI | Practitioner - Family Practice | 1850517913 | Reassigns benefits to 5 organizations |
National Provider Directory
- Medicare enrollment (NPD)
- Yes
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Sound Inpatient Physicians-Michigan, PLLC | Multi-Specialty | Current |
Accepting new patients |
| Bayside Wellness, LLC | Family Medicine | Current | Accepting new patients |
| Hospitalist Medicine Physicians of Michigan - Saginaw PLLC | Multi-Specialty | Current |
Accepting new patients |
| Hospitalist Medicine Physicians of Michigan PLLC | Multi-Specialty | Current |
Accepting new patients |
| Aledade TK Mi, P.C. | Multi-Specialty | Current |
Accepting new patients |
| Bayside Wellness, LLC | Current |
Accepting new patients | |
| Hospitalist Medicine Physicians of Michigan, PLLC | Multi-Specialty | Current | Accepting new patients |
| Sound Inpatient Physicians - Michigan, PLLC | Multi-Specialty | Current |
Accepting new patients |
| Paul Oliver Memorial Hospital | Multi-Specialty | Past | Accepting new patients |
| Maples-Benzie County Medical Care Facility | Past | Accepting new patients | |
| Maple Valley Nursing Home of Maple City, Inc. | Past | Accepting new patients | |
| GTC Opco, LLC | Past | Accepting new patients | |
| Traverse City Opco, LLC | Past | Accepting new patients | |
| Wexford Senior Care Center, LLC | Past | Accepting new patients |
Locations
2425 S Linden Rd
Ste B
Flint, MI 48532
Phone (517) 889-5921
210 Maple Ave
Frankfort, MI 49635
Phone (231) 352-9674
224 Park Ave
Frankfort, MI 49635
Phone (231) 352-2200
1100 E Michigan Ave
Grayling, MI 49738
Phone (989) 348-0317
28550 5 Mile Rd
Livonia, MI 48154
Phone (734) 278-8270
1 Atkinson Dr
Ludington, MI 49431
Phone (231) 843-2591
1465 E Parkdale Ave
Manistee, MI 49660
Phone (231) 398-1000
1086 W Burdickville Rd
Maple City, MI 49664
Phone (231) 228-5895
580 W College Ave
Marquette, MI 49855
Phone (906) 225-3131
3825 Scenic Rdg
Traverse City, MI 49684
Phone (231) 932-9757
Specialties & licenses
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Family Medicine Physician |
207Q00000X | 4301105292 | MI | Yes |
Addresses
Primary practice location
PO Box 1652
Frankfort, MI 49635-1652
Mailing address
PO Box 1652
Frankfort, MI 49635-1652
Phone (231) 955-9565
Other providers in Frankfort, MI
- Melissa Marie Krajnik
- Kristine'S Choice Services
- Jennifer Marie Kuiper
- Mark Donald Kuiper
- Darren R. Lacharite
- Kathleen Grant Larsen
- Jacob Christopher Leblanc
- Patricia Erin Macrae
- Richard Andrews Macrae
- Gerard J Mahoney
All providers in Frankfort, MI · Family Medicine Physician in Michigan
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Record last updated by the provider on May 20, 2026. Information in NPPES is self-reported and not verified by CMS.
- NUCC Health Care Provider Taxonomy: specialty names.
- Medicare Fee-For-Service Public Provider Enrollment (CMS/PECOS): enrollments, PAC IDs and benefit reassignments.
- CMS facility enrollments, All Owners and change-of-ownership files: CCNs, owners and managing parties.
- Provider of Services files (CMS): certification status, beds and related CCNs.
- Order and Referring (CMS).
- Medicare Care Compare provider data (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.