Marissa Ellen Pepicelli

Primary specialty

Registered NurseTaxonomy code 163W00000X

License

RN2343225 Issued in MA

Practice address

133 Brookline Ave
Boston, MA 02215-3904

Phone

(617) 421-1000

NPI assigned

Sep 24, 2025

Sex

Unspecified or another gender identity

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MA

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.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Atrius Health IncGroup PAC ID 4789588641, 1,214 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

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.

• Atrius Health, Inc.

  • Internal Medicine Physician
  • Boston, MA
  • NPI 1871639914

  Single Specialty

  Medicare reassignment Care Compare group NPD
• Atrius Health, Inc.

  • Internal Medicine Physician
  • Needham, MA
  • NPI 1053862045

  Single Specialty

  NPD
• Atrius Health, Inc.

  • Internal Medicine Physician
  • Beverly, MA
  • NPI 1114265634

  Single Specialty

  NPD

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

{
    "created_epoch": "1758672000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761264000000",
    "number": "1699648998",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "230 NEVADA RD",
            "city": "TEWKSBURY",
            "state": "MA",
            "postal_code": "018764838"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "133 BROOKLINE AVE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022153904",
            "telephone_number": "617-421-1000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "PEPICELLI",
        "first_name": "MARISSA",
        "middle_name": "ELLEN",
        "sole_proprietor": "YES",
        "sex": "X",
        "enumeration_date": "2025-09-24",
        "last_updated": "2025-10-24",
        "certification_date": "2025-09-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163W00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Registered Nurse",
            "state": "MA",
            "license": "RN2343225",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Isaiah Aaron Peoples
• Brian Joseph Pepe-Mooney, MD, PHD
• Dana E Pepe, M.D.
• Karen Pepe, LICSW
• Maura E Pepek, MS
• Bridget Pepin
• Bryce Pepin
• Mark Emile Pepin, MD, PHD, MS
• Ashley Pepoli, LICSW
• Jeffrey M Peppercorn, MD

• Registered Nurse in Boston, MA
• Providers in Boston, MA by specialty
• Registered Nurse in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 24, 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.

Verify at the official NPI Registry.