Individual provider Active NPI

George Daniel Disesa, MD

  • Internal Medicine Physician
  • New Haven, CT
National Provider Identifier
1255835393
Registry record updated Jun 13, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
79055 Issued in CT
Practice address
20 York St
New Haven, CT 06510-3220
Phone
(203) 688-4242
NPI assigned
Mar 22, 2018
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 13, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 12821441-1205 UT
Internal Medicine Physician 207R00000X 79055 CT Primary

Addresses

Primary practice location

20 York St
New Haven, CT 06510-3220

Mailing address

20 York St
New Haven, CT 06510-3220
Phone (203) 688-4242

Other practice location 1

80 Seymour St Bldg 502
Hartford, CT 06102-8000
Phone (860) 972-0549

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in PA, UT, CT3 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 3

Enrollment IDStateProvider typePAC IDDetails
I20220427000599 PA Practitioner - Internal Medicine 6103213848 Reassigns benefits to 3 organizations
I20230119001500 UT Practitioner - Hospitalist 6103213848 Reassigns benefits to 1 organization
I20240908000110 CT Practitioner - Internal MedicinePractitioner - Hospitalist 6103213848 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Hospitalist
Education
Temple University School of Medicine, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Ihc Health Services IncGroup PAC ID 1850209420, 3,948 clinicians
Northeast Medical Group IncGroup PAC ID 1254233836, 1,357 clinicians
Hospitalist Medicine Physicians of Pennsylvania PCGroup PAC ID 9234309840, 94 clinicians
Hospitalist Medicine Physicians of Connecticut LLCGroup PAC ID 8628104072, 36 clinicians
Hartford Healthcare Medical Group Specialists PLLCGroup PAC ID 3173866241, 1,555 clinicians

Practice addresses (Care Compare)

1034 N 500
Provo, UT 84604-3380
Phone (801) 357-8879

20 York St
New Haven, CT 06510-3220
Phone (203) 688-1378

559 W Germantown Pike
Einstein Medical Center Montgomery
East Norriton, PA 19403-4250
Phone (484) 622-1000

700 S Hwy 99
Suite 3
Fillmore, UT 84631-5137
Phone (801) 357-4600

71 Haynes St
Manchester, CT 06040-4131
Phone (860) 646-1222

80 Seymour St
Hartford, CT 06102-8000
Phone (860) 972-0549

Hospital & facility affiliations

  • Intermountain Health Utah Valley Hospital Hospital, Provo, UT, CCN 460001
  • Hartford Hospital Hospital, Hartford, CT, CCN 070025
  • Yale-New Haven Hospital Hospital, New Haven, CT, CCN 070022
  • Manchester Memorial Hospital Hospital, Manchester, CT, CCN 070027
  • Jefferson Einstein Montgomery Hospital Hospital, East Norriton, PA, CCN 390329

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
12821441-1205UTMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Ihc Health Services Inc Internal Medicine CurrentSince Jan 2, 2023 Accepting new patients
Northeast Medical Group, Inc. Internal Medicine CurrentSince Sep 1, 2024 Accepting new patients
Hospitalist Medicine Physicians of Connecticut, LLC Internal Medicine CurrentSince Oct 20, 2024 Accepting new patients
Hospitalist Medicine Physicians of Pennsylvania, P.C. Internal Medicine CurrentSince Oct 5, 2025 Accepting new patients
Abington Memorial Hospital CurrentSince Apr 20, 2022 Accepting new patients
Main Line Healthcare Internal Medicine CurrentSince Jun 1, 2023 Accepting new patients
Ihc Health Services, Inc. CurrentSince Jan 2, 2023 Accepting new patients
Ihc Health Services Inc Current Accepting new patients
Hartford Healthcare Medical Group Specialists LLC CurrentSince Apr 20, 2025 Accepting new patients
Hartford Healthcare Medical Group Specialists, PLLC CurrentSince Apr 20, 2025 Accepting new patients

Locations

71 Haynes St
Manchester, CT 06040
Phone (860) 533-2981

1450 Chapel St
New Haven, CT 06511
Phone (203) 789-3151

20 York St
North Haven, CT 06510
Phone (203) 688-2433

1244 Storrs Rd
Storrs Mansfield, CT 06268
Phone (860) 724-2579

95 Armory Rd
Stratford, CT 06614
Phone (203) 384-3388

830 Old Lancaster Rd
Ste 108
Bryn Mawr, PA 19010
Phone (610) 520-5200

3803 West Chester Pike
Ste 160
Newtown Square, PA 19073
Phone (484) 337-1530

255 W Lancaster Ave
Paoli, PA 19301
Phone (484) 337-4286

559 W Germantown Pike
West Norriton, PA 19403
Phone (484) 622-1000

2729 Blair Mill Rd
Ste E
Willow Grove, PA 19090
Phone (215) 672-0899

100 E Lancaster Ave
Wynnewood, PA 19096
Phone (484) 337-3583

700 S Highway 99
Ste 3
Fillmore, UT 84631
Phone (435) 743-5555

1034 N 500 W
Provo, UT 84604
Phone (801) 362-4119

Interoperability endpoints

  • Direct secure messaging: gdisesa675569@direct.ynhh.org

Organizations & group practices 10

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 9

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": "1521676800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1749772800000",
    "number": "1255835393",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "20 YORK ST",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065103220",
            "telephone_number": "203-688-4242"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "20 YORK ST",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065103220",
            "telephone_number": "203-688-4242"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "80 Seymour St Bldg 502",
            "address_purpose": "LOCATION",
            "city": "Hartford",
            "state": "CT",
            "postal_code": "061028000",
            "country_code": "US",
            "telephone_number": "860-972-0549",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DISESA",
        "first_name": "GEORGE",
        "middle_name": "DANIEL",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-03-22",
        "last_updated": "2025-06-13",
        "certification_date": "2025-06-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "UT",
            "license": "12821441-1205",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CT",
            "license": "79055",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in New Haven, CT

Sources for this page

Verify at the official NPI Registry.