Caitlyn Elizabeth O'Brien, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

Practice address

1099 Targee St
Staten Island, NY 10304-4310

Phone

(718) 667-7500

NPI assigned

May 7, 2025

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 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

Physician Assistant

Education

Other, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

True North Medical Group PCGroup PAC ID 7012194806, 185 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

Practice roles

Locations

Networks

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

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.

• True North Medical Group PC

  • Orthopaedic Surgery Physician
  • Merrick, NY
  • NPI 1659883486

  Physician Assistant

  Medicare reassignment Care Compare group NPD
• True North Medical Group PC

  • Oxygen Equipment & Supplies (DME)
  • Tarrytown, NY
  • NPI 1669272886
  NPD
• True North Medical Group PC

  • Cardiovascular Disease Physician
  • Bayside, NY
  • NPI 1669762258
  NPD (past)

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

{
    "created_epoch": "1746576000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777939200000",
    "number": "1194515882",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1099 TARGEE ST",
            "city": "STATEN ISLAND",
            "state": "NY",
            "postal_code": "103044310",
            "telephone_number": "718-667-7500",
            "fax_number": "718-815-3379"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1099 TARGEE ST",
            "city": "STATEN ISLAND",
            "state": "NY",
            "postal_code": "103044310",
            "telephone_number": "718-667-7500"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'BRIEN",
        "first_name": "CAITLYN",
        "middle_name": "ELIZABETH",
        "name_prefix": "Ms.",
        "credential": "PA-C",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2025-05-07",
        "last_updated": "2026-05-05",
        "certification_date": "2026-05-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "NY",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• O.a. Adult Health NP P.C.
• O.B. Adult Health Nurse Practitioner Services PC
• Brittany Marie O'Berg
• Skyler O'Berry
• Annemarie Elizabeth O'Brien
• Kelly Elizabeth O'Brien, M.S. ED.
• Timothy O'Byrne, MD
• Shannon O'Connell
• O'Connor Sports & Spine Chiropractic P.L.L.C.
• Christopher Thomas O'Connor, D.C.

• Physician Assistant in Staten Island, NY
• Providers in Staten Island, NY by specialty
• Physician Assistant in New York

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