Melissa Almeida Williams, CNP

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

2324739 Issued in MA

Practice address

266 Main St Ste 4
Medfield, MA 02052-2018

Phone

(508) 359-8141

NPI assigned

Feb 16, 2021

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 3

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, 2021

Medicare assignment

May accept Medicare assignment

Telehealth

Offers telehealth services

Group practices

Mass General Brigham Medical Group Northern Massachusetts IncGroup PAC ID 3577467224, 817 clinicians

Carecentral Urgent Care Medical Group PCGroup PAC ID 5496907099, 23 clinicians

Medfield Internal Medicine, PLLCGroup PAC ID 0749714947, 3 clinicians

Mass General Brigham Urgent Care LLCGroup PAC ID 9436470119, 106 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

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

Medicare enrollment (NPD)

Enrolled

Credentials

Certified Nurse Practitioner, Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: williams.melissa.puc@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.

• Carecentral Urgent Care Medical Group PC

  • Urgent Care Clinic/Center
  • Stoughton, MA
  • NPI 1922385319
  Medicare reassignment Care Compare group NPD
• Mass General Brigham Medical Group Northern Massachusetts Inc

  • Emergency Medicine Physician
  • Salem, MA
  • NPI 1588606123
  Medicare reassignment Care Compare group NPD
• Mass General Brigham Urgent Care LLC

  • Urgent Care Clinic/Center
  • Brookline, MA
  • NPI 1720486830
  Medicare reassignment Care Compare group NPD
• Medfield Internal Medicine, PLLC

  • Internal Medicine Physician
  • Medfield, MA
  • NPI 1174364723
  Medicare reassignment Care Compare group NPD
• Mass General Brigham Community Physicians Inc.

  • Internal Medicine Physician
  • Haverhill, MA
  • NPI 1891112637
  Medicare reassignment NPD
• Carecentral Urgent Care Medical Group PC

  • Urgent Care Clinic/Center
  • Halifax, MA
  • NPI 1053119677
  NPD
• Mark H. Abensohn, M.D., L.L.C.

  • Internal Medicine Physician
  • Medfield, MA
  • NPI 1326137704
  NPD
• Mass General Brigham Community Physicians Inc

  • Cardiovascular Disease Physician
  • Medford, MA
  • NPI 1548638265
  NPD
• Mass General Brigham Urgent Care LLC

  • Urgent Care Clinic/Center
  • Cambridge, MA
  • NPI 1609387695
  NPD
• Mass General Brigham Urgent Care LLC

  • Urgent Care Clinic/Center
  • Cambridge, MA
  • NPI 1881141398
  NPD
• Carecentral Urgent Care Medical Group PC

  • Urgent Care Clinic/Center
  • Stoughton, MA
  • NPI 1679966022
  NPD (past)
• Mass General Brigham Community Physicians Inc.

  • Internal Medicine Physician
  • Concord, MA
  • NPI 1174545875
  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
• 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": "1613433600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770940800000",
    "number": "1356934871",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "286 WASHINGTON ST",
            "city": "STOUGHTON",
            "state": "MA",
            "postal_code": "020721763"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "266 MAIN ST STE 4",
            "city": "MEDFIELD",
            "state": "MA",
            "postal_code": "020522018",
            "telephone_number": "508-359-8141"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "71 Needham St",
            "address_purpose": "LOCATION",
            "city": "Newton",
            "state": "MA",
            "postal_code": "024611663",
            "country_code": "US",
            "telephone_number": "508-208-3063",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "286 Washington St",
            "address_purpose": "LOCATION",
            "city": "Stoughton",
            "state": "MA",
            "postal_code": "020721763",
            "country_code": "US",
            "telephone_number": "781-341-2800",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "MELISSA",
        "middle_name": "ALMEIDA",
        "name_prefix": "Ms.",
        "credential": "CNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-02-16",
        "last_updated": "2026-02-13",
        "certification_date": "2026-02-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "MA",
            "license": "RN2324739",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "MA",
            "license": "2324739",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CNP",
            "identifier": "RN2324739",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MASSACHUSETTS RN",
            "identifier": "RN2324739",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RN",
            "identifier": "2324739",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Wellness Explorations LLC
• Amy Westerman, MS, CCC-SLP
• Brian Wheeler, PT
• Meaghan Tanguay White, DPT
• Kimberly Whitecross
• Callie Woodhams
• Kadie Yannone, LCSW
• Samantha Grace Yoke
• Hilary Sue Ziven, PSY.D.

• Family Nurse Practitioner in Medfield, MA
• Providers in Medfield, MA by specialty
• Family Nurse Practitioner in Massachusetts

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