Marybeth Nelson, RPAC

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

1215 Issued in MA

Practice address

44 Binney St
Boston, MA 02115

Phone

(617) 632-5435

Fax

(617) 582-8216

NPI assigned

May 17, 2006

Sex

Female

Sole proprietor

No

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

Physician Assistant

Education

Other, 1997

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

Physician Assistant

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mnelsonpa11922@direct.atrius.masshiway.net

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
  Medicare reassignment Care Compare group
• Atrius Health, Inc.

  • Internal Medicine Physician
  • Beverly, MA
  • NPI 1114265634

  Physician Assistant

  NPD
• Atrius Health, Inc.

  • Internal Medicine Physician
  • Somerville, MA
  • NPI 1154535813

  Physician Assistant

  NPD

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

{
    "created_epoch": "1147824000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1760435390",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "44 BINNEY ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02115",
            "telephone_number": "617-632-5435",
            "fax_number": "617-582-8216"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "44 BINNEY ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02115",
            "telephone_number": "617-632-5435",
            "fax_number": "617-582-8216"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NELSON",
        "first_name": "MARYBETH",
        "credential": "RPAC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-05-17",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "MA",
            "license": "1215",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Leah Nelson, LICSW
• Linda Nelson, D.M.D.
• Lindsay Nelson
• Margret O'Byrne Nelson, RN BSN ACRN
• Marina Nelson
• Megan Elizabeth Nelson, PHD
• Michael David Nelson, M.D.
• Ryan William Nelson, M.D./PH.D.
• Sandra Bliss Nelson, M.D.
• Sarah Nelson, PHD

• Physician Assistant in Boston, MA
• Providers in Boston, MA by specialty
• Physician Assistant in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; 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.