Marissa L Osorio, WHNP

Primary specialty

Women's Health Nurse PractitionerTaxonomy code 363LW0102X

License

RN2328964 Issued in MA

Practice address

1021 Main St Ste 102
Winchester, MA 01890-1971

Phone

(781) 721-4701

NPI assigned

May 15, 2023

Sex

Female

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, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Health Imperatives IncGroup PAC ID 9931328481, 8 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Winchester Hospital Hospital, Winchester, MA, CCN 220105

Medicare enrollment (NPD)

Enrolled

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.

• Health Imperatives Inc.

  • Non-Surgical Family Planning Clinic/Center
  • Brockton, MA
  • NPI 1760526420

  Multi-Specialty

  Medicare reassignment Care Compare group NPD
• Health Imperatives Inc.

  • Non-Surgical Family Planning Clinic/Center
  • Plymouth, MA
  • NPI 1861536906
  NPD

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

• Winchester Hospital

  • General Acute Care Hospital
  • Winchester, MA
  • NPI 1790740777
  Care Compare affiliation

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

{
    "created_epoch": "1684108800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783728000000",
    "number": "1770273591",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1021 MAIN ST STE 102",
            "city": "WINCHESTER",
            "state": "MA",
            "postal_code": "018901971",
            "telephone_number": "781-721-4701"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1021 MAIN ST STE 102",
            "city": "WINCHESTER",
            "state": "MA",
            "postal_code": "018901971",
            "telephone_number": "781-721-4701"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OSORIO",
        "first_name": "MARISSA",
        "middle_name": "L",
        "name_prefix": "Mrs.",
        "credential": "WHNP",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2023-05-15",
        "last_updated": "2026-07-11",
        "certification_date": "2026-07-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LW0102X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Nurse Practitioner, Women's Health",
            "state": "MA",
            "license": "RN2328964",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Joseph P O'Donnell, D.M.D.
• Flora E Ocampo, DDS
• Joanne J Oh, M.D.
• Matthew Oliver
• Van Orenstein, D.M.D.
• Pablo Bella Dental
• Sarah V Packard, LICSW
• Peter Joseph Pantano, D.D.S.
• Erik Caesar Parena
• Annie Lin Parker, MD

• Women's Health Nurse Practitioner in Winchester, MA
• Providers in Winchester, MA by specialty
• Women's Health Nurse Practitioner in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 11, 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.