Individual provider Active NPI

Madison Messmer, DO

  • Emergency Medicine Physician
  • Dayton, OH
National Provider Identifier
1164125571
Registry record updated May 6, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
DO228745 Issued in OR
Practice address
405 W Grand Ave
Dayton, OH 45405-7538
Phone
(937) 723-3248
NPI assigned
Mar 24, 2023
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 6, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X DO228745 OR Primary

Addresses

Primary practice location

405 W Grand Ave
Dayton, OH 45405-7538

Mailing address

405 W Grand Ave
Dayton, OH 45405-7538
Phone (937) 723-3248

Other practice location 1

342 Fairview St
Silverton, OR 97381-1917
Phone (503) 873-1500

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OR
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 1

Enrollment IDStateProvider typePAC IDDetails
I20260520004268 OR Practitioner - Emergency Medicine 1254800089 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
New York Medical College, 2022
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

1919 NW Lovejoy St
Portland, OR 97209-1503

2850 NW 31St Ave
Portland, OR 97210-1720

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
DO228745ORMDEmergency Medicine Physician

Organizations & group practices 2

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.

NPI Registry JSON

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

{
    "created_epoch": "1679616000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778025600000",
    "number": "1164125571",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "405 W GRAND AVE",
            "city": "DAYTON",
            "state": "OH",
            "postal_code": "454057538",
            "telephone_number": "937-723-3248"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "405 W GRAND AVE",
            "city": "DAYTON",
            "state": "OH",
            "postal_code": "454057538",
            "telephone_number": "937-723-3248"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "342 Fairview St",
            "address_purpose": "LOCATION",
            "city": "Silverton",
            "state": "OR",
            "postal_code": "973811917",
            "country_code": "US",
            "telephone_number": "503-873-1500",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MESSMER",
        "first_name": "MADISON",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-03-24",
        "last_updated": "2026-05-06",
        "certification_date": "2026-05-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "OR",
            "license": "DO228745",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Dayton, OH

Sources for this page

Verify at the official NPI Registry.