Individual provider Active NPI

Andrea Gail Isaacs, M.D.

  • Internal Medicine Physician
  • Wallingford, CT
National Provider Identifier
1457491532
Registry record updated Sep 3, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
74943 Issued in CT
Practice address
50 Gaylord Farm Rd
Wallingford, CT 06492-2899
Phone
(203) 284-2800
NPI assigned
Feb 7, 2007
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 3, 2025

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 74943 CT Primary
Pulmonary Disease Physician 207RP1001X 212109 NY
Critical Care Medicine (Internal Medicine) Physician 207RC0200X 212109 NY
Internal Medicine Physician 207R00000X 212109 NY

Addresses

Primary practice location

50 Gaylord Farm Rd
Wallingford, CT 06492-2899

Mailing address

50 Gaylord Farm Rd
Wallingford, CT 06492-2899
Phone (203) 284-2800

Other practice location 1

MTS 490 Blue Hills Ave
Hartford, CT 06112
Phone (860) 714-2647

Other identifiers 1

IdentifierTypeStateIssuer
25MA0762130OtherNJMEDICAL LICENSE #

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY, CT2 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
I20090319000117 NY Practitioner - Pulmonary DiseasePractitioner - Critical Care (Intensivists)Practitioner - Internal Medicine 3779506480 Reassigns benefits to 1 organization
I20230905000330 CT Practitioner - Internal Medicine 3779506480 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
University of Pittsburgh School of Medicine, 1997
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Gaylord Hospital, Inc.Group PAC ID 1153224191, 39 clinicians

Practice addresses (Care Compare)

490 Blue Hills Ave
Hartford, CT 06112-1513
Phone (860) 714-3500

50 Gaylord Farm Rd
Wallingford, CT 06492-2828
Phone (203) 284-2800

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled
HHS exclusion list flag
CMS’s directory marks this NPI as on an HHS exclusion list; no matching OIG record was found. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Maimonides Medical Center Current Accepting new patients
Icahn School of Medicine at Mount Sinai Current Accepting new patients
Icahn School of Medicine at Mount Sinai CurrentSince Sep 23, 2023 Accepting new patients
Gaylord Hospital, Inc. CurrentSince Aug 7, 2023 Accepting new patients
Trinity Health of New England Provider Network Organization Inc Internal Medicine CurrentSince Sep 23, 2024 Accepting new patients
Icahn School of Medicine at Mount Sinai Pulmonary Disease CurrentSince Sep 23, 2023 Accepting new patients
Trinity Health of New England Provider Network Organization Inc Internal Medicine CurrentSince Sep 23, 2024 Accepting new patients
Grace Medical Association Corporation Specialist PastSince Mar 9, 2011 Accepting new patients
Englewood Healthcare Associates PC Specialist Past Accepting new patients

Locations

114 Woodland St
Hartford, CT 06105
Phone (860) 714-4001

50 Gaylord Farm Rd
Wallingford, CT 06492
Phone (203) 679-3553

7901 Broadway
Rm A119
Elmhurst, NY 11373
Phone (718) 334-3915

Interoperability endpoints

  • FHIR API: https://epicproxy.et1073.epichosted.com/FHIRProxy/api/FHIR/R4/
  • Direct secure messaging: aisaacs1041869@nychhc.direct-ci.com
  • Direct secure messaging: andreaisaacs@mai.allscriptsdirect.net
  • Direct secure messaging: andreaisaacs@nslijmedgr.allscriptsdirect.net

Organizations & group practices 9

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 1

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": "1170806400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756857600000",
    "number": "1457491532",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "50 GAYLORD FARM RD",
            "city": "WALLINGFORD",
            "state": "CT",
            "postal_code": "064922899",
            "telephone_number": "203-284-2800"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "50 GAYLORD FARM RD",
            "city": "WALLINGFORD",
            "state": "CT",
            "postal_code": "064922899",
            "telephone_number": "203-284-2800"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "MTS 490 Blue Hills Ave",
            "address_purpose": "LOCATION",
            "city": "Hartford",
            "state": "CT",
            "postal_code": "06112",
            "country_code": "US",
            "telephone_number": "860-714-2647",
            "fax_number": "860-714-8517",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ISAACS",
        "first_name": "ANDREA",
        "middle_name": "GAIL",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-02-07",
        "last_updated": "2025-09-03",
        "certification_date": "2025-09-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CT",
            "license": "74943",
            "primary": true
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "NY",
            "license": "212109",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "NY",
            "license": "212109",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "212109",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICAL LICENSE #",
            "identifier": "25MA0762130",
            "state": "NJ"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Wallingford, CT

Sources for this page

Verify at the official NPI Registry.