Hannah-Mariah Whittle Gallant, NP

Primary specialty

Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X

License

RN267611 Issued in MA

Practice address

1 Boston Medical Ctr PL
Boston
Boston, MA 02118-2371

Phone

(617) 414-5245

Fax

(617) 638-6836

NPI assigned

Oct 11, 2007

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

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in MA, ME2 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, 2008

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

St Marys Regional Medical CenterGroup PAC ID 0042107120, 192 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St Mary's Regional Medical Center Hospital, Lewiston, ME, CCN 200034

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://api.platform.athenahealth.com/4368/brand/1/csg/1/fhir/r4
• Direct secure messaging: hseverns1155555@direct.bsmhealth.org
• Direct secure messaging: hseverns297131@direct.ochin.org

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• St. Mary's Regional Medical Center

  • General Acute Care Hospital
  • Lewiston, ME
  • NPI 1447226584
  Medicare reassignment Care Compare group
• Boston Medical Center Corporation

  dba Greater Roslindale Medical and Dental Center

  • Community Health Clinic/Center
  • Roslindale, MA
  • NPI 1386718823
  Medicare reassignment NPD
• Child & Family Services, Inc.

  • Mental Health Counselor
  • New Bedford, MA
  • NPI 1205813540
  Medicare reassignment NPD
• Manet Community Health Center, Inc.

  • Federally Qualified Health Center (FQHC)
  • North Quincy, MA
  • NPI 1114027539
  Medicare reassignment NPD
• Community Clinical Services, Inc.

  • Federally Qualified Health Center (FQHC)
  • Lewiston, ME
  • NPI 1164477568
  Medicare reassignment NPD
• Boston Medical Center Corporation

  dba Cornerstone Health Solutions

  • Home Infusion Therapy Pharmacy
  • Randolph, MA
  • NPI 1003703281
  NPD
• Manet Community Health Center, Inc.

  dba Manet Community Health Center at Taunton Public Schools

  • Federally Qualified Health Center (FQHC)
  • Taunton, MA
  • NPI 1063123271
  NPD
• St. Mary's Regional Medical Center

  dba St. Mary's Urgent Care

  • Urgent Care Clinic/Center
  • Auburn, ME
  • NPI 1407242522
  NPD
• Brighter Day Health LLC

  • Geriatric Psychiatry Physician
  • Boston, MA
  • NPI 1245584960
  NPD (past)
• Brighter Day Health, LLC

  • Geriatric Psychiatry Physician
  • Houston, TX
  • NPI 1609197110
  NPD (past)

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

• St. Mary's Regional Medical Center

  • General Acute Care Hospital
  • Lewiston, ME
  • NPI 1447226584
  Care Compare affiliation

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

{
    "created_epoch": "1192060800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770249600000",
    "number": "1083802391",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3 BROWNS LN",
            "city": "KENNEBUNKPORT",
            "state": "ME",
            "postal_code": "040466770",
            "telephone_number": "617-913-2765",
            "fax_number": "716-320-9803"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 BOSTON MEDICAL CTR PL",
            "address_2": "BOSTON",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021182371",
            "telephone_number": "617-414-5245",
            "fax_number": "617-638-6836"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3 Browns Ln",
            "address_purpose": "LOCATION",
            "city": "Kennebunkport",
            "state": "ME",
            "postal_code": "040466770",
            "country_code": "US",
            "telephone_number": "617-913-2765",
            "fax_number": "716-320-9803",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GALLANT",
        "first_name": "HANNAH-MARIAH",
        "middle_name": "WHITTLE",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-10-11",
        "last_updated": "2026-02-05",
        "certification_date": "2026-02-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "MA",
            "license": "RN267611",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "110086911A",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Sean William Gallagher, M.D.
• Sherrin Lee Gallagher, NP
• Stacey Orr Gallagher, DPT
• Amanda Jean Gallant, MD
• Collyn Gallant, AU.D
• Katlyn Marie Gallant, M.A., BCBA, LABA
• Sara C Gallant, M.D.
• Thomas Gallant, DO
• Alexis Francine Gallardo Foreman, NP
• Katherine Gallardo

• Psychiatric/Mental Health Nurse Practitioner in Boston, MA
• Providers in Boston, MA by specialty
• Psychiatric/Mental Health Nurse Practitioner in Massachusetts

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