Individual provider Active NPI

Marissa Rose Demers, PA-C

  • Medical Physician Assistant
  • Bristol, CT
National Provider Identifier
1891587580
Registry record updated May 20, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Medical Physician AssistantTaxonomy code 363AM0700X
License
7110 Issued in CT
Practice address
539 Farmington Ave
Bristol, CT 06010-3931
Phone
(860) 314-6046
NPI assigned
May 20, 2025
Sex
Female
Sole proprietor
No

Organizations & group practices 1

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 1

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

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2025
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Bristol Hospital Multi Specialty Group, Inc. 148 clinicians

Practice addresses (Care Compare)

539 Farmington Ave
Bristol, CT 06010-3931
Phone (860) 314-6046

Hospital & facility affiliations

  • Bristol Hospital Hospital, Bristol, CT, CCN 070029

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CT
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: No
Green means eligible to order or refer.

Medicare enrollment records 1

Medicare enrollment files
Enrollment IDStateProvider typePAC IDDetails
I20251027000656 CT Practitioner - Physician Assistant 5991294423 Reassigns benefits to 1 organization

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

State licenses

LicenseStateTypeSpecialty
7110CTMDPharmacist

Practice roles

OrganizationSpecialtyStatusNew patients
Bristol Hospital Multi Specialty Group, Inc CurrentSince Jul 18, 2025 Accepting new patients

Locations

41 Brewster Rd
Bristol, CT 06010
Phone (800) 585-3000

539 Farmington Ave
Bristol, CT 06010
Phone (860) 314-6046

Specialties & licenses 1

NPPES NPI Registry
Specialty (taxonomy)CodeLicenseStatePrimary
Medical Physician Assistant 363AM0700X 7110 CT Primary

Addresses

NPPES NPI Registry

Primary practice location

539 Farmington Ave
Bristol, CT 06010-3931

Mailing address

11 Maple St
Somers, CT 06071-1803

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format, last updated by the provider on May 20, 2025.

{
    "created_epoch": "1747699200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1747699200000",
    "number": "1891587580",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11 MAPLE ST",
            "city": "SOMERS",
            "state": "CT",
            "postal_code": "060711803"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "539 FARMINGTON AVE",
            "city": "BRISTOL",
            "state": "CT",
            "postal_code": "060103931",
            "telephone_number": "860-314-6046"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DEMERS",
        "first_name": "MARISSA",
        "middle_name": "ROSE",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-05-20",
        "last_updated": "2025-05-20",
        "certification_date": "2025-05-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "CT",
            "license": "7110",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Bristol, CT

Sources for this page

Verify at the official NPI Registry.