Individual provider Active NPI

Brett Erik Larsen, M.D.

  • Surgery Physician
  • Flint, MI
National Provider Identifier
1740552249
Registry record updated Aug 15, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Surgery PhysicianTaxonomy code 208600000X
License
4301111208 Issued in MI
Practice address
3500 Calkins Rd Ste a
Flint, MI 48532-3500
Phone
(810) 515-7662
Fax
(810) 337-1479
NPI assigned
Jan 31, 2012
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Aug 15, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Surgical Critical Care Physician 2086S0102X 78132 AZ
Student in an Organized Health Care Education/Training Program 390200000X
Surgery Physician 208600000X 4301111208 MI Primary

Addresses

Primary practice location

3500 Calkins Rd Ste a
Flint, MI 48532-3500

Mailing address

302 Kensington Ave
Flint, MI 48503-2044
Phone (810) 762-8092

Other practice location 1

1200 N Beaver St
Flagstaff, AZ 86001-3118
Phone (928) 773-2200

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MI, AZ2 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20170323002385 MI Practitioner - General Surgery 1951686427 Reassigns benefits to 5 organizations
I20250829002936 AZ Practitioner - General Surgery 1951686427 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
General Surgery
Education
Other, 2009
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Northern Arizona Healthcare CorporationGroup PAC ID 3577473362, 391 clinicians
McLaren Bay RegionGroup PAC ID 5597659011, 110 clinicians
Acute Care Surgery Medical Group IncGroup PAC ID 7214006816, 205 clinicians

Practice addresses (Care Compare)

1200 N Beaver St
Flagstaff, AZ 86001-3118
Phone (928) 779-3366

1215 N Beaver St
Suite 203
Flagstaff, AZ 86001-3126
Phone (928) 773-2249

1900 Columbus Ave
Bay Regional
Bay City, MI 48708-6831
Phone (989) 894-3000

50 N Perry St
Outpatient Clinic 2 South
Pontiac, MI 48342-2217
Phone (248) 338-5000

Hospital & facility affiliations

  • McLaren Oakland Hospital, Pontiac, MI, CCN 230207
  • Flagstaff Medical Center Hospital, Flagstaff, AZ, CCN 030023

Procedures performed for Medicare patients

ProcedureNumber of procedures
Upper gastrointestinal (GI) endoscopy for acid reflux1-10
Removal of tissue1-10

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Edward W Sparrow Hospital Association Family Medicine CurrentSince Mar 10, 2021 Accepting new patients
Beaumont Medical Group- Specialty Services Surgery CurrentSince Oct 8, 2025 Accepting new patients
Northern Arizona Healthcare Corporation CurrentSince Sep 1, 2025 Accepting new patients
Northern Arizona Healthcare Corporation Family Medicine Current Accepting new patients
Surgical Affiliates of California Surgery CurrentSince Aug 15, 2025 Accepting new patients
Acute Care Surgery Medical Group, Inc. Surgery CurrentSince Aug 15, 2025 Accepting new patients
Edward W. Sparrow Hospital Association Current Accepting new patients
Flagstaff Pathology Associates Current Accepting new patients
Edward W. Sparrow Hospital Association Surgery CurrentSince Mar 10, 2021 Accepting new patients
Edward W Sparrow Hospital Association Past Accepting new patients

Locations

269 S Candy Ln
Cottonwood, AZ 86326
Phone (928) 634-2251

1200 N Beaver St
Flagstaff, AZ 86001
Phone (928) 213-6235

1215 N Beaver St
Ste 203
Flagstaff, AZ 86001
Phone (928) 773-2249

8175 Reliable Pkwy
Chicago, IL 60686

4660 S Hagadorn Rd
Ste 600
East Lansing, MI 48823
Phone (517) 267-2460

4660 S Hagadorn Rd
Ste 500
East Lansing, MI 48823
Phone (517) 432-6144

28100 Grand River Ave
Ste 301
Farmington Hills, MI 48336
Phone (947) 521-1320

1200 E Michigan Ave
Ste 510
Lansing, MI 48912
Phone (517) 364-5184

1200 E Michigan Ave
Ste 655
Lansing, MI 48912
Phone (517) 267-2460

1210 W Saginaw St
Lansing, MI 48915
Phone (517) 364-7180

1215 E Michigan Ave
Lansing, MI 48912
Phone (517) 336-8080

416 Connable Ave
Petoskey, MI 49770
Phone (231) 487-4000

50 N Perry St
Pontiac, MI 48342
Phone (248) 338-5300

50 N Perry St
#2S
Pontiac, MI 48342
Phone (248) 338-5865

50 N Perry St
#2
Pontiac, MI 48342
Phone (248) 338-5865

Organizations & group practices 11

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

Hospital & facility affiliations 5

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": "1327968000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755216000000",
    "number": "1740552249",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "302 KENSINGTON AVE",
            "city": "FLINT",
            "state": "MI",
            "postal_code": "485032044",
            "telephone_number": "810-762-8092",
            "fax_number": "810-762-8892"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3500 CALKINS RD STE A",
            "city": "FLINT",
            "state": "MI",
            "postal_code": "485323500",
            "telephone_number": "810-515-7662",
            "fax_number": "810-337-1479"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1200 N Beaver St",
            "address_purpose": "LOCATION",
            "city": "Flagstaff",
            "state": "AZ",
            "postal_code": "860013118",
            "country_code": "US",
            "telephone_number": "928-773-2200",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LARSEN",
        "first_name": "BRETT",
        "middle_name": "ERIK",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2012-01-31",
        "last_updated": "2025-08-15",
        "certification_date": "2025-08-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2086S0102X",
            "taxonomy_group": "",
            "desc": "Surgery, Surgical Critical Care",
            "state": "AZ",
            "license": "78132",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "MI",
            "license": "4301111208",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Flint, MI

Sources for this page

Verify at the official NPI Registry.