Geraldine Callahan, NP

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

204352 Issued in MA

Practice address

39 Simon St Ste 5
Nashua, NH 03060-3045

Phone

(603) 889-8648

NPI assigned

Mar 18, 2015

Sex

Female

Sole proprietor

No

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

Specialties & licenses 4

Addresses

Other names 1

• Geraldine Callahan Professional name

Medicare fee-for-service enrollment

Enrolled in MA, NH2 enrollments

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 2

Specialty

Nurse Practitioner

Education

Other, 1991

Medicare assignment

May accept Medicare assignment

Telehealth

Offers telehealth services

Group practices

Lamora Psychological Associates, P.a.Group PAC ID 3072565472, 11 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/

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.

• Lamora Psychological Associates, P.a.

  • Clinical Psychologist
  • Nashua, NH
  • NPI 1407876253
  Medicare reassignment Care Compare group NPD
• Henry Heywood Memorial Hospital

  • General Acute Care Hospital
  • Gardner, MA
  • NPI 1205823879

  Nurse Practitioner

  Medicare reassignment NPD
• Northeast Health Services, LLC

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Taunton, MA
  • NPI 1225067481
  Medicare reassignment NPD
• Pathways Mental Health and Wellness, P.L.L.C

  • Nurse Practitioner
  • Manchester, NH
  • NPI 1568318228
  NPD Authorized official
• Mental Health Center for Southern New Hampshire Inc

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Derry, NH
  • NPI 1003914466
  Medicare reassignment
• Henry Heywood Memorial Hospital

  • Psychiatric Hospital Unit
  • Gardner, MA
  • NPI 1457685299
  NPD

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

{
    "created_epoch": "1426636800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778803200000",
    "number": "1669865473",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "39 SIMON ST STE 5",
            "city": "NASHUA",
            "state": "NH",
            "postal_code": "030603045",
            "telephone_number": "603-889-8648"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "39 SIMON ST STE 5",
            "city": "NASHUA",
            "state": "NH",
            "postal_code": "030603045",
            "telephone_number": "603-889-8648"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CALLAHAN",
        "first_name": "GERALDINE",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2015-03-18",
        "last_updated": "2026-05-15",
        "certification_date": "2026-05-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "MA",
            "license": "204352",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "NH",
            "license": "065522-23",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "MA",
            "license": "204352",
            "primary": true
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "NH",
            "license": "065522-23",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "GERALDINE",
            "last_name": "CALLAHAN",
            "credential": "NP",
            "code": "2",
            "type": "Professional Name"
        }
    ]
}

• Karen E Calabro, PA-C
• Stephanie Nicole Caldera
• Elizabeth Caldwell, M.S. CCC-SLP
• Gabriela Andrade Calhoun, MD
• Denis Patrick Callahan, MSW, LGSW
• Joyce Calzetta
• Candice Camacho, MD
• Amanda Camerano
• Katherine Camoscio, DPT
• Cara Geraldine Campbell, LMFT

• Nurse Practitioner in Nashua, NH
• Providers in Nashua, NH by specialty
• Nurse Practitioner in New Hampshire

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 15, 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.