NPIMap

Individual provider Active NPI

Marissa Weir, PA-C

  • Medical Physician Assistant
  • Latrobe, PA
National Provider Identifier
1073406948
Registry record updated Mar 4, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Medical Physician AssistantTaxonomy code 363AM0700X
License
MA066480 Issued in PA
Practice address
1 Mellon Way
Latrobe, PA 15650-1197
Phone
(724) 539-3555
NPI assigned
May 30, 2025
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Mar 4, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Medical Physician Assistant 363AM0700X MA066480 PA Primary

Addresses

Primary practice location

1 Mellon Way
Latrobe, PA 15650-1197

Mailing address

1500 Fitzgerald CT
Greensburg, PA 15601-9074
Phone (724) 989-8342

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address marissadean@emg.allscriptsdirect.net Direct

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in PA
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
I20250723003813 PA Practitioner - Physician Assistant 0941716047 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2024
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Excela Health Physician Practices, IncGroup PAC ID 6204737117, 474 clinicians
Phoenix Rehabilitation and Health Services IncGroup PAC ID 3476464298, shared by 2 NPIs, 2,775 clinicians

Practice addresses (Care Compare)

1 Mellon Way
Latrobe, PA 15650-1197

100 Excela Health Dr
Latrobe, PA 15650-1197

2000 Westinghouse Dr
Suite 200
Cranberry Township, PA 16066-5238

532 W Pittsburgh St
Greensburg, PA 15601-2239

Hospital & facility affiliations

  • Excela Health Latrobe Hospital Hospital, Latrobe, PA, CCN 390219
  • Excela Health Westmoreland Regional Hospital Hospital, Greensburg, PA, CCN 390145
  • Excela Health - Frick Hospital Hospital, Mount Pleasant, PA, CCN 390217

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Excela Health Physician Practices Inc CurrentSince Aug 4, 2025 Accepting new patients
Excela Health Physician Practices, Inc. CurrentSince Aug 4, 2025 Accepting new patients
Excela Health Physician Practices, Inc Past Accepting new patients

Locations

530 South St
Ste G10
Greensburg, PA 15601
Phone (724) 689-1335

532 W Pittsburgh St
Greensburg, PA 15601
Phone (724) 832-4000

1 Mellon Way
Latrobe, PA 15650
Phone (724) 537-1207

Interoperability endpoints

  • Direct secure messaging: marissadean@emg.allscriptsdirect.net

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 18

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

View all 18

NPI Registry JSON

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

{
    "created_epoch": "1748563200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772582400000",
    "number": "1073406948",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1500 FITZGERALD CT",
            "city": "GREENSBURG",
            "state": "PA",
            "postal_code": "156019074",
            "telephone_number": "724-989-8342"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 MELLON WAY",
            "city": "LATROBE",
            "state": "PA",
            "postal_code": "156501197",
            "telephone_number": "724-539-3555"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WEIR",
        "first_name": "MARISSA",
        "credential": "PA-C",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2025-05-30",
        "last_updated": "2026-03-04",
        "certification_date": "2026-03-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "PA",
            "license": "MA066480",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "marissadean@emg.allscriptsdirect.net",
            "affiliation": "N",
            "endpointDescription": "Direct Email Address",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "1 Mellon Way",
            "city": "Latrobe",
            "state": "PA",
            "country_code": "US",
            "postal_code": "156501197",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Latrobe, PA

Sources for this page

Verify at the official NPI Registry.