Active NPI
Brett Erik Larsen, M.D.
- Surgery Physician
- Flint, MI
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Surgery Physician
- License
- 4301111208
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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, AZ
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
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
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
- Flagstaff Medical Center
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Upper gastrointestinal (GI) endoscopy for acid reflux | 1-10 |
| Removal of tissue | 1-10 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Edward W Sparrow Hospital Association | Family Medicine | Current | Accepting new patients |
| Beaumont Medical Group- Specialty Services | Surgery | Current | Accepting new patients |
| Northern Arizona Healthcare Corporation | Current | Accepting new patients | |
| Northern Arizona Healthcare Corporation | Family Medicine | Current | Accepting new patients |
| Surgical Affiliates of California | Surgery | Current | Accepting new patients |
| Acute Care Surgery Medical Group, Inc. | Surgery | Current | 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 | Current | 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.
-
- Family Medicine Physician
- Flagstaff, AZ
- NPI 1669914552
-
- Family Medicine Physician
- Bay City, MI
- NPI 1508131087
-
- Surgery Physician
- Royal Oak, MI
- NPI 1578072906
-
- Pediatrics Physician
- Lansing, MI
- NPI 1831139088
-
- Adult Health Nurse Practitioner
- Lansing, MI
- NPI 1265220438
Family Medicine
-
- Surgery Physician
- Lansing, MI
- NPI 1245822386
-
- Anatomic Pathology & Clinical Pathology Physician
- Flagstaff, AZ
- NPI 1306205612
-
- Multi-Specialty Clinic/Center
- Flagstaff, AZ
- NPI 1235732702
-
- General Acute Care Hospital
- Lansing, MI
- NPI 1073588711
Hospital & facility affiliations 5
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Pontiac, MI
- NPI 1376564088
-
- Psychiatric Hospital Unit
- Flagstaff, AZ
- NPI 1649370875
-
- General Acute Care Hospital
- Flagstaff, AZ
- NPI 1780635078
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 15, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.