NPIMap

Individual provider Active NPI

Mark Langlois, M.D.

  • Family Medicine Physician
  • Frankfort, MI
National Provider Identifier
1295154656
Registry record updated May 20, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
4301105292 Issued in MI
Practice address
PO Box 1652
Frankfort, MI 49635-1652
Phone
(231) 955-9565
Fax
(231) 220-9568
NPI assigned
Apr 14, 2014
Last updated
May 20, 2026By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on May 20, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207Q00000X 4301105292 MI Primary

Addresses

Primary practice location

PO Box 1652
Frankfort, MI 49635-1652

Mailing address

PO Box 1652
Frankfort, MI 49635-1652
Phone (231) 955-9565

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MI
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20170706001188 MI Practitioner - Family Practice 1850517913 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
Other, 2013
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Great Lakes Therapy Housecalls PCGroup PAC ID 7719876580, shared by 2 NPIs, 71 clinicians

Practice addresses (Care Compare)

9731 E Cherry Bend Rd
Traverse City, MI 49684-7621
Phone (231) 941-8100

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Hospitalist Medicine Physicians of Michigan, PLLC Multi-Specialty Current Accepting new patients
Hospitalist Medicine Physicians of Michigan PLLC Multi-Specialty CurrentSince Jan 25, 2020 Accepting new patients
Sound Inpatient Physicians-Michigan, PLLC Multi-Specialty CurrentSince Jan 25, 2020 Accepting new patients
Sound Inpatient Physicians - Michigan, PLLC Multi-Specialty CurrentSince Jan 25, 2020 Accepting new patients
Bayside Wellness, LLC Family Medicine Current Accepting new patients
Aledade TK Mi, P.C. Multi-Specialty CurrentSince Oct 1, 2025 Accepting new patients
Bayside Wellness, LLC CurrentSince Apr 1, 2022 Accepting new patients
Hospitalist Medicine Physicians of Michigan - Saginaw PLLC Multi-Specialty CurrentSince Jan 1, 2023 Accepting new patients
GTC Opco, LLC Past Accepting new patients
Maple Valley Nursing Home of Maple City, Inc. Past Accepting new patients
Maples-Benzie County Medical Care Facility Past Accepting new patients
Paul Oliver Memorial Hospital Multi-Specialty 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

Ownership & related parties

All facility ownership & control disclosures 4

Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.

FacilityTypeRoleSince
Great Lakes TherapyMaple City, MI, CCN 235588 Skilled nursing facility Operational/Managerial Control
Adp of the SNF		 Feb 1, 2020
Feb 1, 2020
Maples-Benzie County Medical Care FacilityFrankfort, MI, CCN 235005 Skilled nursing facility Operational/Managerial Control
Adp of the SNF		 Aug 1, 2018
Aug 1, 2018
Bayside Wellness, LLCTraverse City, MI, CCN 239356 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, LLCTraverse City, MI, CCN 231712 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

Owned or controlled facilities with NPI records 4

Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.

Organizations & group practices 15

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

View all 15

Hospital & facility affiliations 11

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1397433600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779235200000",
    "number": "1295154656",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 1652",
            "city": "FRANKFORT",
            "state": "MI",
            "postal_code": "496351652",
            "telephone_number": "231-955-9565",
            "fax_number": "231-220-9568"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "PO BOX 1652",
            "city": "FRANKFORT",
            "state": "MI",
            "postal_code": "496351652",
            "telephone_number": "231-955-9565",
            "fax_number": "231-220-9568"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LANGLOIS",
        "first_name": "MARK",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2014-04-14",
        "last_updated": "2026-05-20",
        "certification_date": "2026-05-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Family Medicine",
            "state": "MI",
            "license": "4301105292",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Frankfort, MI

Sources for this page

Verify at the official NPI Registry.