NPIMap

Individual provider Active NPI

Gerard A. Dillon, M.D.

  • Cardiovascular Disease Physician
  • Concord, NH
National Provider Identifier
1750398293
Registry record updated Jan 12, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Cardiovascular Disease PhysicianTaxonomy code 207RC0000X
License
10936 Issued in NH
Practice address
253 Pleasant St
Dartmouth Hitchcock - Cardiology
Concord, NH 03301-7560
Phone
(603) 229-5234
Fax
(603) 640-1228
NPI assigned
Aug 1, 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
Cardiovascular Disease Physician 207RC0000X 10936 NH Primary
Interventional Cardiology Physician 207RI0011X 10936 NH

Addresses

Primary practice location

253 Pleasant St
Dartmouth Hitchcock - Cardiology
Concord, NH 03301-7560

Mailing address

253 Pleasant St
Dartmouth Hitchcock - Cardiology
Concord, NH 03301-7560
Phone (603) 229-5234

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
I20060314000390 NH Practitioner - Cardiovascular Disease (Cardiology) 0547277782 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Cardiovascular Disease (Cardiology)
Education
State University of New York at Buffalo School of Medicine, 1992
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Mary Hitchcock Memorial HospitalGroup PAC ID 4486561164, 1,269 clinicians
Dartmouth-Hitchcock ClinicGroup PAC ID 4183537509, 1,445 clinicians

Practice addresses (Care Compare)

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

253 Pleasant St
Concord, NH 03301-7560
Phone (603) 226-2200

Hospital & facility affiliations

  • Mary Hitchcock Memorial Hospital Hospital, Lebanon, NH, CCN 300003
  • Concord Hospital- Laconia Hospital, Laconia, NH, CCN 300005
  • Concord Hospital Hospital, Concord, NH, CCN 300001
  • Concord Hospital- Franklin Hospital, Franklin, NH, CCN 301306
  • New London Hospital Hospital, New London, NH, CCN 301304

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

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
The New London Hospital Association, Inc. Family Medicine CurrentSince Jun 1, 2020 Accepting new patients
Mary Hitchcock Memorial Hospital CurrentSince Jun 1, 2023 Accepting new patients
The New London Hospital Association, Inc. CurrentSince Jun 1, 2020 Accepting new patients
Dartmouth-Hitchcock Clinic Cardiovascular Disease CurrentSince Jan 1, 2016 Accepting new patients
Mary Hitchcock Memorial Hospital CurrentSince Jun 1, 2023 Accepting new patients
Dartmouth-Hitchcock Clinic Family Medicine Past Accepting new patients
The New London Hospital Association, Inc. Past Accepting new patients

Locations

246 Pleasant St
Concord, NH 03301
Phone (603) 224-1223

250 Pleasant St
Concord, NH 03301
Phone (603) 225-2711

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

246 Pleasant St
Ste 103
Concord, NH 03301
Phone (603) 224-1725

85 Spring St
Laconia, NH 03246
Phone (603) 524-7402

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

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

273 County Rd
New London, NH 03257
Phone (603) 526-5215

Interoperability endpoints

  • Direct secure messaging: gdillon12287@direct.dartmouth-hitchcock.org

Organizations & group practices 12

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 8

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": "1154390400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768176000000",
    "number": "1750398293",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "253 PLEASANT ST",
            "address_2": "DARTMOUTH HITCHCOCK - CARDIOLOGY",
            "city": "CONCORD",
            "state": "NH",
            "postal_code": "033017560",
            "telephone_number": "603-229-5234"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "253 PLEASANT ST",
            "address_2": "DARTMOUTH HITCHCOCK - CARDIOLOGY",
            "city": "CONCORD",
            "state": "NH",
            "postal_code": "033017560",
            "telephone_number": "603-229-5234",
            "fax_number": "603-640-1228"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DILLON",
        "first_name": "GERARD",
        "middle_name": "A.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-01",
        "last_updated": "2026-01-12",
        "certification_date": "2026-01-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "NH",
            "license": "10936",
            "primary": true
        },
        {
            "code": "207RI0011X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Interventional Cardiology",
            "state": "NH",
            "license": "10936",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Concord, NH

Sources for this page

Verify at the official NPI Registry.