NPIMap

Individual provider Active NPI

Ryan David Demmendaal, MD

  • Emergency Medicine Physician
  • Farmington, ME
National Provider Identifier
1245932607
Registry record updated Jul 23, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
MD29926 Issued in ME
Practice address
111 Franklin Health CMNS
Farmington, ME 04938-6144
Phone
(207) 778-6031
Fax
(207) 779-2632
NPI assigned
Mar 20, 2023
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 23, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X MD29926 ME Primary
Emergency Medicine Physician 207P00000X 39961 NH

Addresses

Primary practice location

111 Franklin Health CMNS
Farmington, ME 04938-6144

Mailing address

111 Franklin Health CMNS
Farmington, ME 04938-6144
Phone (207) 778-6031

Other practice location 1

3073 White Mountain Hwy
North Conway, NH 03860-7101
Phone (603) 356-5461

Other practice location 2

22 Bramhall St
Portland, ME 04102-3175
Phone (207) 662-0111

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in ME
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
I20251203001125 ME Practitioner - Emergency Medicine 2860851722 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
University of Washington School of Medicine, 2023
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

1 Riverfront PLZ
Westbrook, ME 04092-9700

Hospital & facility affiliations

  • Mainehealth Maine Medical Center Hospital, Portland, ME, CCN 200009

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
MD29926MEMDEmergency Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Mainehealth CurrentSince Jan 17, 2026 Accepting new patients
Mainehealth CurrentSince Jan 17, 2026 Accepting new patients
Mainehealth CurrentSince Jan 17, 2026 Accepting new patients

Locations

111 Franklin Health Cmns
Farmington, ME 04938
Phone (207) 778-3326

22 Bramhall St
Portland, ME 04102
Phone (207) 662-2179

Organizations & group practices 4

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 36

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

View all 36

NPI Registry JSON

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

{
    "created_epoch": "1679270400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784764800000",
    "number": "1245932607",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "111 FRANKLIN HEALTH CMNS",
            "city": "FARMINGTON",
            "state": "ME",
            "postal_code": "049386144",
            "telephone_number": "207-778-6031",
            "fax_number": "207-779-2632"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "111 FRANKLIN HEALTH CMNS",
            "city": "FARMINGTON",
            "state": "ME",
            "postal_code": "049386144",
            "telephone_number": "207-778-6031",
            "fax_number": "207-779-2632"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3073 White Mountain Hwy",
            "address_purpose": "LOCATION",
            "city": "North Conway",
            "state": "NH",
            "postal_code": "038607101",
            "country_code": "US",
            "telephone_number": "603-356-5461",
            "fax_number": "603-356-9048",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "22 Bramhall St",
            "address_purpose": "LOCATION",
            "city": "Portland",
            "state": "ME",
            "postal_code": "041023175",
            "country_code": "US",
            "telephone_number": "207-662-0111",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DEMMENDAAL",
        "first_name": "RYAN",
        "middle_name": "DAVID",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2023-03-20",
        "last_updated": "2026-07-23",
        "certification_date": "2026-07-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "ME",
            "license": "MD29926",
            "primary": true
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "NH",
            "license": "39961",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Farmington, ME

Sources for this page

Verify at the official NPI Registry.