NPIMap

Individual provider Active NPI

Guilherme Marmontel Nasi, M.D.

  • Advanced Heart Failure and Transplant Cardiology Physician
  • Dover, NH
National Provider Identifier
1639526825
Registry record updated Sep 10, 2023
On this page

Key facts

NPPES NPI Registry
Primary specialty
Advanced Heart Failure and Transplant Cardiology PhysicianTaxonomy code 207RA0001X
License
23749 Issued in NH
Practice address
19 Old Rollinsford Rd BLDG B
Dover, NH 03820-2807
Phone
(603) 516-4265
NPI assigned
May 18, 2016
Reactivated
Oct 13, 2017
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 10, 2023

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Advanced Heart Failure and Transplant Cardiology Physician 207RA0001X 1016187 MA
Cardiovascular Disease Physician 207RC0000X 23749 NH
Advanced Heart Failure and Transplant Cardiology Physician 207RA0001X 23749 NH Primary

Addresses

Primary practice location

19 Old Rollinsford Rd BLDG B
Dover, NH 03820-2807

Mailing address

PO Box 412503
Boston, MA 02241-2503
Phone (617) 726-3884

Other practice location 1

55 Fruit St
Boston, MA 02114-2696
Phone (617) 724-9254

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NH, MA2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20230725002751 NH Practitioner - Cardiovascular Disease (Cardiology)Practitioner - Advanced Heart Failure and Transplant Cardiology 6002143047 Reassigns benefits to 1 organization
I20231005001850 MA Practitioner - Advanced Heart Failure and Transplant CardiologyPractitioner - Cardiovascular Disease (Cardiology) 6002143047 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Cardiovascular Disease (Cardiology)Also: Advanced Heart Failure and Transplant Cardiology
Education
Other, 2013
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

19 Old Rollinsford Rd
BLDG B
Dover, NH 03820-2807
Phone (603) 516-4265

55 Fruit St
Boston, MA 02114-2696
Phone (617) 724-0287

Hospital & facility affiliations

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Massachusetts General Physicians Organization Inc CurrentSince Sep 11, 2023 Accepting new patients
Wentworth Douglass Hospital Current Accepting new patients
Wentworth Douglass Physician Corporation Cardiovascular Disease Current Accepting new patients
The General Hospital Corporation CurrentSince Sep 11, 2023 Accepting new patients
Wentworth Douglass Physician Corporation CurrentSince Aug 1, 2023 Accepting new patients
Westchester Neurological Consultant PC Past Accepting new patients

Locations

55 Fruit St
Boston, MA 02114

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

750 Central Ave
Ste Q
Dover, NH 03820
Phone (603) 742-6030

19 Old Rollinsford Rd
Bldg B
Dover, NH 03820
Phone (603) 516-4265

789 Central Ave
Dover, NH 03820
Phone (603) 740-2832

67 Corporate Dr
Fl 2
Portsmouth, NH 03801
Phone (603) 610-8078

67 Corporate Dr
Bldg A
Portsmouth, NH 03801
Phone (603) 431-5529

3 Terrascape Pkwy
Somersworth, NH 03878
Phone (603) 609-6726

Interoperability endpoints

  • Direct secure messaging: marmontelnasi.guilherme.wdh@direct.partners.masshiway.net
  • FHIR API: https://fhir.meditouchehr.com/api/fhir/r4/

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

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": "1463529600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1694304000000",
    "number": "1639526825",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 412503",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022412503",
            "telephone_number": "617-726-3884"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "19 OLD ROLLINSFORD RD BLDG B",
            "city": "DOVER",
            "state": "NH",
            "postal_code": "038202807",
            "telephone_number": "603-516-4265"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "55 Fruit St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021142696",
            "country_code": "US",
            "telephone_number": "617-724-9254",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MARMONTEL NASI",
        "first_name": "GUILHERME",
        "name_prefix": "Mr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-05-18",
        "last_updated": "2023-09-10",
        "certification_date": "2023-09-10",
        "deactivation_date": "2017-01-20",
        "reactivation_date": "2017-10-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RA0001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Advanced Heart Failure and Transplant Cardiology",
            "state": "MA",
            "license": "1016187",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "NH",
            "license": "23749",
            "primary": false
        },
        {
            "code": "207RA0001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Advanced Heart Failure and Transplant Cardiology",
            "state": "NH",
            "license": "23749",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Dover, NH

Sources for this page

Verify at the official NPI Registry.