Marisa Ann Armstrong, NP

Primary specialty

Pediatric Nurse PractitionerTaxonomy code 363LP0200X

License

383705 Issued in NY

Practice address

101 Nicolls Rd
Stony Brook, NY 11794-0001

Phone

(631) 689-8333

NPI assigned

Jul 17, 2025

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 NY

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, 2024

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

Practice roles

Locations

Networks

• Healthfirst Medicare Network H3359
• Healthfirst Medicare Network H1722
• Healthfirst Medicare Network H5989
• Healthfirst Medicare Network H9678

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.

• Stony Brook Children'S Service, University Faculty Practice Corporatio

  • Pediatrics Physician
  • Stony Brook, NY
  • NPI 1083660575

  Multi-Specialty

  Medicare reassignment NPD

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

{
    "created_epoch": "1752710400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1759968000000",
    "number": "1013809664",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 1559",
            "city": "STONY BROOK",
            "state": "NY",
            "postal_code": "117900989",
            "telephone_number": "631-444-0650"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "101 NICOLLS RD",
            "city": "STONY BROOK",
            "state": "NY",
            "postal_code": "117940001",
            "telephone_number": "631-689-8333"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ARMSTRONG",
        "first_name": "MARISA",
        "middle_name": "ANN",
        "name_prefix": "Ms.",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-07-17",
        "last_updated": "2025-10-09",
        "certification_date": "2025-10-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0200X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Nurse Practitioner, Pediatrics",
            "state": "NY",
            "license": "383705",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Elise Frangoise Arbefeville, MD
• Reine Mary Archer, FNP
• Russell David Areman
• Naveera Arif, MD
• Carlo Guy Arinoldo, ED.D.
• Matthew A Aron, D.C.
• Olga Christina Aroniadis, M.D.
• Jaspreet Arora, PA
• Andrea Jasmine Arreguin
• Elizabeth Arruda, MD

• Pediatric Nurse Practitioner in Stony Brook, NY
• Providers in Stony Brook, NY by specialty
• Pediatric Nurse Practitioner in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 9, 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.