Individual provider Active NPI

Mark Garret, M.D.

  • Neuromuscular Medicine (Psychiatry & Neurology) Physician
  • Lebanon, NH
National Provider Identifier
1245683226
Registry record updated May 21, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Neuromuscular Medicine (Psychiatry & Neurology) PhysicianTaxonomy code 2084N0008X
License
33832 Issued in NH
Practice address
1 Medical Center Dr # 1000
Lebanon, NH 03756-0001
Phone
(603) 650-5000
Fax
(603) 640-1228
NPI assigned
Jul 14, 2016
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 21, 2026

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

Specialties & licenses 5

Specialty (taxonomy)CodeLicenseStatePrimary
Neuromuscular Medicine (Psychiatry & Neurology) Physician 2084N0008X 2020017661 MO
Neuromuscular Medicine (Psychiatry & Neurology) Physician 2084N0008X 291557 MA
Neurology Physician 2084N0400X 2020017661 MO
Neurology Physician 2084N0400X 291557 MA
Neuromuscular Medicine (Psychiatry & Neurology) Physician 2084N0008X 33832 NH Primary

Addresses

Primary practice location

1 Medical Center Dr # 1000
Lebanon, NH 03756-0001

Mailing address

165 Cambridge St Ste 600
Boston, MA 02114-2781
Phone (617) 724-3914

Other practice location 1

55 Fruit St # 835
Boston, MA 02114-2696
Phone (617) 724-3914

Medicare participation

Medicare enrollment files
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: Yes
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20220628002367 MA Practitioner - Neurology 9234552183 Reassigns benefits to 2 organizations
I20241114000176 NH Practitioner - Neurology 9234552183 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Neurology
Education
Other, 2016
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Dartmouth-Hitchcock ClinicGroup PAC ID 4183537509, 1,445 clinicians
Mary Hitchcock Memorial HospitalGroup PAC ID 4486561164, 1,269 clinicians

Practice addresses (Care Compare)

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

Hospital & facility affiliations

  • Mary Hitchcock Memorial Hospital Hospital, Lebanon, NH, CCN 300003
  • Cheshire Medical Center Hospital, Keene, NH, CCN 300019
  • Catholic Medical Center Hospital, Manchester, NH, CCN 300034
  • Gifford Medical Center Hospital, Randolph, VT, CCN 471301

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
The General Hospital Corporation CurrentSince Jul 1, 2022 Accepting new patients
Dartmouth-Hitchcock Clinic CurrentSince Nov 6, 2024 Accepting new patients
Massachusetts General Physicians Organization Inc Neurology CurrentSince Jul 1, 2022 Accepting new patients
Mary Hitchcock Memorial Hospital CurrentSince Nov 6, 2024 Accepting new patients
Mary Hitchcock Memorial Hospital CurrentSince Nov 6, 2024 Accepting new patients

Locations

55 Fruit St
#835
Boston, MA 02114
Phone (617) 726-5532

55 Fruit St
Boston, MA 02114

55 Fruit St
#2
Boston, MA 02114
Phone (617) 726-2967

165 Cambridge St
Ste 600
Boston, MA 02114
Phone (617) 726-4281

15 Parkman St
Boston, MA 02114
Phone (617) 726-3023

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

Organizations & group practices 5

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 5

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": "1468454400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779321600000",
    "number": "1245683226",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "165 CAMBRIDGE ST STE 600",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142781",
            "telephone_number": "617-724-3914"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 MEDICAL CENTER DR # 1000",
            "city": "LEBANON",
            "state": "NH",
            "postal_code": "037560001",
            "telephone_number": "603-650-5000",
            "fax_number": "603-640-1228"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "55 Fruit St # 835",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021142696",
            "country_code": "US",
            "telephone_number": "617-724-3914",
            "fax_number": "617-724-7290",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GARRET",
        "first_name": "MARK",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-07-14",
        "last_updated": "2026-05-21",
        "certification_date": "2026-05-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084N0008X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neuromuscular Medicine",
            "state": "MO",
            "license": "2020017661",
            "primary": false
        },
        {
            "code": "2084N0008X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neuromuscular Medicine",
            "state": "MA",
            "license": "291557",
            "primary": false
        },
        {
            "code": "2084N0400X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurology",
            "state": "MO",
            "license": "2020017661",
            "primary": false
        },
        {
            "code": "2084N0400X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurology",
            "state": "MA",
            "license": "291557",
            "primary": false
        },
        {
            "code": "2084N0008X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neuromuscular Medicine",
            "state": "NH",
            "license": "33832",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Lebanon, NH

Sources for this page

Verify at the official NPI Registry.