NPIMap

Individual provider Active NPI

Nathan Eric Simmons, MD

  • Neurological Surgery Physician
  • Lebanon, NH
National Provider Identifier
1972529121
Registry record updated Jan 8, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Neurological Surgery PhysicianTaxonomy code 207T00000X
License
11820 Issued in NH
Practice address
1 Medical Center Dr
Lebanon, NH 03756-0001
Phone
(603) 650-5109
Fax
(603) 640-1228
NPI assigned
Jul 14, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 8, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Neurological Surgery Physician 207T00000X 11820 NH Primary

Addresses

Primary practice location

1 Medical Center Dr
Lebanon, NH 03756-0001

Mailing address

One Medical Center Dr
Neurosurgery
Lebanon, NH 03756-0001
Phone (603) 650-5109

Other identifiers 2

IdentifierTypeStateIssuer
3072307MedicaidNH
1009264MedicaidVT

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
I20060124000265 NH Practitioner - Neurosurgery 4183648678 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Neurosurgery
Education
University of Virginia School of Medicine, 1993
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Dartmouth-Hitchcock ClinicGroup PAC ID 4183537509, shared by 2 NPIs, 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
  • New London Hospital Hospital, New London, NH, CCN 301304
  • Mt Ascutney Hospital Hospital, Windsor, VT, CCN 471302
  • Alice Peck Day Memorial Hospital Hospital, Lebanon, NH, CCN 301305

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

Merit-based Incentive Payment System (MIPS)

Final score
83.39 of 100Reported as group
Quality
72.51
Promoting interoperability
100
Improvement activities
40
Cost
55.45

Procedures performed for Medicare patients

ProcedureNumber of procedures
Spinal fusion20
Laminectomy or laminotomy (partial removal of spine bones)1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
39255TXMDPsychologist

Practice roles

OrganizationSpecialtyStatusNew patients
Dartmouth-Hitchcock Clinic CurrentSince Mar 10, 2015 Accepting new patients
Dartmouth-Hitchcock Clinic CurrentSince Nov 4, 2002 Accepting new patients
Mary Hitchcock Memorial Hospital CurrentSince Nov 4, 2002 Accepting new patients
Mary Hitchcock Memorial Hospital CurrentSince Nov 4, 2002 Accepting new patients
The University of Texas Health Science Center at San Antonio Past Accepting new patients

Locations

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

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

Interoperability endpoints

  • Direct secure messaging: nsimmons16471@direct.dartmouth-hitchcock.org

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 14

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

View all 14

NPI Registry JSON

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

{
    "created_epoch": "1152835200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767830400000",
    "number": "1972529121",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "ONE MEDICAL CENTER DR",
            "address_2": "NEUROSURGERY",
            "city": "LEBANON",
            "state": "NH",
            "postal_code": "037560001",
            "telephone_number": "603-650-5109"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 MEDICAL CENTER DR",
            "city": "LEBANON",
            "state": "NH",
            "postal_code": "037560001",
            "telephone_number": "603-650-5109",
            "fax_number": "603-640-1228"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIMMONS",
        "first_name": "NATHAN",
        "middle_name": "ERIC",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-14",
        "last_updated": "2026-01-08",
        "certification_date": "2026-01-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "NH",
            "license": "11820",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "3072307",
            "state": "NH"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1009264",
            "state": "VT"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Lebanon, NH

Sources for this page

Verify at the official NPI Registry.