NPIMap

Individual provider Active NPI

Sean Charles Lucas Frost, M.D.

  • Adult Reconstructive Orthopaedic Surgery Physician
  • Nashua, NH
National Provider Identifier
1457375248
Registry record updated Jan 12, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Adult Reconstructive Orthopaedic Surgery PhysicianTaxonomy code 207XS0114X
License
12875 Issued in NH
Practice address
21 E Hollis St
Nashua, NH 03060-2928
Phone
(603) 577-4000
Fax
(603) 640-1228
NPI assigned
Jul 26, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 12, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Orthopaedic Surgery Physician 207X00000X 12875 NH
Adult Reconstructive Orthopaedic Surgery Physician 207XS0114X 12875 NH Primary

Addresses

Primary practice location

21 E Hollis St
Nashua, NH 03060-2928

Mailing address

21 E Hollis St
Nashua, NH 03060-2928
Phone (603) 577-4000

Other identifiers 1

IdentifierTypeStateIssuer
30205512MedicaidNH

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NH
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20051031000735 NH Practitioner - Orthopedic Surgery 5890751754 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Orthopedic Surgery
Education
Other, 1999
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Mary Hitchcock Memorial HospitalGroup PAC ID 4486561164, 1,269 clinicians
Foundation Medical Partners IncGroup PAC ID 9436140456, 313 clinicians
Dartmouth-Hitchcock ClinicGroup PAC ID 4183537509, shared by 2 NPIs, 1,445 clinicians

Practice addresses (Care Compare)

1 Medical Ctr Dr
Lebanon, NH 03756-1000
Phone (603) 650-5000

17 Prospect St
Suite N203
Nashua, NH 03060-3964
Phone (603) 577-2663

2300 Southwood Dr
Nashua, NH 03063-1818
Phone (603) 577-4070

Hospital & facility affiliations

  • Home Health & Hospice Care Home health agency, Merrimack, NH, CCN 307017
  • Vna at HCS Inc Home health agency, Keene, NH, CCN 307046
  • Bayada Home Health Care Inc. Home health agency, Londonderry, NH, CCN 307098
  • Mary Hitchcock Memorial Hospital Hospital, Lebanon, NH, CCN 300003
  • Southern NH Medical Center Hospital, Nashua, NH, CCN 300020
  • St Joseph Hospital Hospital, Nashua, NH, CCN 300011
  • Elliot Hospital Hospital, Manchester, NH, CCN 300012

Merit-based Incentive Payment System (MIPS)

Final score
79.66 of 100Reported as apm
Quality
53.51
Promoting interoperability
100
Improvement activities
40

Merit-based Incentive Payment System (MIPS)

Final score
79.66 of 100Reported as apm
Quality
53.51
Promoting interoperability
100
Improvement activities
40

Procedures performed for Medicare patients

ProcedureNumber of procedures
Hip replacement42
Knee replacement58

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Foundation Medical Partners Inc. CurrentSince Apr 1, 2026 Accepting new patients
Foundation Medical Partners Inc Orthopaedic Surgery CurrentSince Apr 1, 2026 Accepting new patients
Dartmouth-Hitchcock Clinic Orthopaedic Surgery CurrentSince Oct 10, 2005 Accepting new patients
Mary Hitchcock Memorial Hospital CurrentSince Jun 1, 2023 Accepting new patients
Dartmouth-Hitchcock Clinic CurrentSince Oct 10, 2005 Accepting new patients
Mary Hitchcock Memorial Hospital CurrentSince Jun 1, 2023 Accepting new patients

Locations

253 Pleasant St
Concord, NH 03301
Phone (603) 226-2200

1 Medical Dr
Lebanon, NH 03756
Phone (603) 650-5922

17 Prospect St
Ste N203
Nashua, NH 03060
Phone (603) 577-2663

21 E Hollis St
Nashua, NH 03060
Phone (603) 577-4200

172 Kinsley St
Nashua, NH 03060
Phone (603) 595-3926

2300 Southwood Dr
Nashua, NH 03063
Phone (603) 577-4170

Interoperability endpoints

  • Direct secure messaging: sfrost12870@direct.dartmouth-hitchcock.org

Organizations & group practices 6

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.

Hospital & facility affiliations 10

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

NPI Registry JSON

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

{
    "created_epoch": "1153872000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768176000000",
    "number": "1457375248",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "21 E HOLLIS ST",
            "city": "NASHUA",
            "state": "NH",
            "postal_code": "030602928",
            "telephone_number": "603-577-4000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "21 E HOLLIS ST",
            "city": "NASHUA",
            "state": "NH",
            "postal_code": "030602928",
            "telephone_number": "603-577-4000",
            "fax_number": "603-640-1228"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FROST",
        "first_name": "SEAN",
        "middle_name": "CHARLES LUCAS",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-26",
        "last_updated": "2026-01-12",
        "certification_date": "2026-01-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "NH",
            "license": "12875",
            "primary": false
        },
        {
            "code": "207XS0114X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Adult Reconstructive Orthopaedic Surgery",
            "state": "NH",
            "license": "12875",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "30205512",
            "state": "NH"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Nashua, NH

Sources for this page

Verify at the official NPI Registry.