Catherine Longshore McCormack, APRN, RN

Primary specialty

Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X

License

27925 Issued in SC

Practice address

23 Main St Ste 103
Hilton Head Island, SC 29926-6607

Phone

(803) 290-1898

Fax

(859) 575-2775

NPI assigned

Oct 10, 2008

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in SC

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

Ohio State University College of Medicine, 2023

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Hilton Head Psychiatric Clinics PCGroup PAC ID 8527184811, 2 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Registered Nurse

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: katie.longshore.1@21022.direct.athenahealth.com

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.

• Hilton Head Psychiatric Clinics, PC

  • Psychiatry Physician
  • Hilton Head Island, SC
  • NPI 1245408103
  Medicare reassignment Care Compare group NPD
• Longshore Psychiatric Mental Health Services LLC

  dba Catherine McCormack PMNP-BC

  • Psychiatric/Mental Health Nurse Practitioner
  • Hilton Head Island, SC
  • NPI 1689544512
  Medicare reassignment NPD Authorized official

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

{
    "created_epoch": "1223596800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778112000000",
    "number": "1871744607",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "23 MAIN ST STE 103",
            "city": "HILTON HEAD ISLAND",
            "state": "SC",
            "postal_code": "299266607",
            "telephone_number": "803-290-1898",
            "fax_number": "859-575-2775"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "23 MAIN ST STE 103",
            "city": "HILTON HEAD ISLAND",
            "state": "SC",
            "postal_code": "299266607",
            "telephone_number": "803-290-1898",
            "fax_number": "859-575-2775"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MCCORMACK",
        "first_name": "CATHERINE",
        "middle_name": "LONGSHORE",
        "name_prefix": "Mrs.",
        "credential": "APRN, RN",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2008-10-10",
        "last_updated": "2026-05-07",
        "certification_date": "2026-05-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "SC",
            "license": "27925",
            "primary": false
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "SC",
            "license": "27925",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• James Delroy Mayers Jr., MD
• Lisa M Mazeika, PA-C
• Madeline Gray Mazoue, DPT, PT
• Jocelyn Claire McCauley, OTR/L
• Emma Diane McClendon, PTA
• Brian Michael McGinnis, D.C.
• Me Pivot Holdings LLC (Miracle Ear)
• Joseph Meadows
• Walter C Meier, MD
• Rachel Merrick, MHS, OTR/L

• Psychiatric/Mental Health Nurse Practitioner in Hilton Head Island, SC
• Providers in Hilton Head Island, SC by specialty
• Psychiatric/Mental Health Nurse Practitioner in South Carolina

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 7, 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.