Mackenzie Grace Peterson

Primary specialty

Physician AssistantTaxonomy code 363A00000X

Practice address

75 Francis St
Boston, MA 02115-6110

Phone

(617) 732-5500

NPI assigned

Sep 23, 2022

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, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Brigham and Womens Physicians Organization IncGroup PAC ID 3870405988, 2,931 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Brigham and Women'S Hospital Hospital, Boston, MA, CCN 220110
• Brigham and Women Faulkner Hospital Hospital, Jamaica Plain, MA, CCN 220119
• Newton-Wellesley Hospital Hospital, Newton, MA, CCN 220101

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: peterson.mackenzie.bwh@direct.partners.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.

• Brigham & Womens Physicians Organization Inc

  • Internal Medicine Physician
  • Boston, MA
  • NPI 1033535497
  Medicare reassignment Care Compare group
• Brigham and Women'S Hospital

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1093885816
  NPD
• Brigham and Womens Physicians Organization Inc

  • Diagnostic Radiology Physician
  • Boston, MA
  • NPI 1265464598
  NPD (past)

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

• Brigham & Womens Hospital, Inc.

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1790717650
  Care Compare affiliation
• Brigham and Women'S Faulkner Hospital, Inc

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1578677811
  Care Compare affiliation
• Brigham and Women'S Faulkner Hospital, Inc.

  • Psychiatric Hospital Unit
  • Boston, MA
  • NPI 1033121025
  Care Compare affiliation
• Newton-Wellesley Hospital

  • General Acute Care Hospital
  • Newton, MA
  • NPI 1992737761
  Care Compare affiliation

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

{
    "created_epoch": "1663891200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772668800000",
    "number": "1235852286",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "26 CREST WOOD CIR",
            "city": "PITTSFORD",
            "state": "NY",
            "postal_code": "145349556",
            "telephone_number": "585-329-9383"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "75 FRANCIS ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021156110",
            "telephone_number": "617-732-5500"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "26 Crest Wood Cir",
            "address_purpose": "LOCATION",
            "city": "Pittsford",
            "state": "NY",
            "postal_code": "145349556",
            "country_code": "US",
            "telephone_number": "585-329-9383",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "PETERSON",
        "first_name": "MACKENZIE",
        "middle_name": "GRACE",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-09-23",
        "last_updated": "2026-03-05",
        "certification_date": "2026-03-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Erin Peterson, LICSW
• Hanna Jane Peterson, MD
• Hannah Marie Peterson, NP
• Jackie Peterson, LICSW, LCSW
• Kimberly Peterson
• Margaret Ride Peterson, PA
• Mariko Sada Peterson, MD/PHD
• Mary Anne L Peterson, PA-C
• Megan Peterson, DNP, FNP
• Meredith Peterson

• 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 Mar 5, 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.