Individual provider Active NPI

Margaret Anne Macgibeny, MD, PHD

  • Dermatology Physician
  • New Haven, CT
National Provider Identifier
1124604996
Registry record updated Jul 24, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Dermatology PhysicianTaxonomy code 207N00000X
License
80447 Issued in CT
Practice address
20 York St
New Haven, CT 06510-3220
Phone
(203) 688-4242
NPI assigned
Mar 22, 2021
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 24, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X
Dermatology Physician 207N00000X 80447 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

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CT
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 1

Enrollment IDStateProvider typePAC IDDetails
I20250924003932 CT Practitioner - Dermatology 5193108744 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Dermatology
Education
Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc), 2021
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Cornell Scott Hill Health CorporationGroup PAC ID 3072418359, 261 clinicians
Yale UniversityGroup PAC ID 9436061736, 2,632 clinicians

Practice addresses (Care Compare)

428 Columbus Ave
New Haven, CT 06519-1233
Phone (203) 503-3228

800 Howard Ave
New Haven, CT 06519-1369
Phone (203) 785-2140

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Removal of skin lesions19
Skin biopsy14

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Yale University CurrentSince Sep 4, 2025 Accepting new patients
Cornell Scott Hill Health Corporation CurrentSince Jan 12, 2026 Accepting new patients
Yale University Dermatology CurrentSince Sep 4, 2025 Accepting new patients
Cornell Scott Hill Health Corporation Past Accepting new patients

Locations

428 Columbus Ave
New Haven, CT 06519
Phone (203) 503-3228

800 Howard Ave
New Haven, CT 06519
Phone (203) 785-2140

50 Division St
New Haven, CT 06511
Phone (203) 785-2140

150 Sargent Dr
Ste 2200
New Haven, CT 06511

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

Interoperability endpoints

  • Direct secure messaging: mmacgibney570498@direct.ynhh.org

Organizations & group practices 4

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 2

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": "1616371200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753315200000",
    "number": "1124604996",
    "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": [],
    "basic": {
        "last_name": "MACGIBENY",
        "first_name": "MARGARET",
        "middle_name": "ANNE",
        "name_prefix": "Dr.",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-03-22",
        "last_updated": "2025-07-24",
        "certification_date": "2025-07-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207N00000X",
            "taxonomy_group": "",
            "desc": "Dermatology",
            "state": "CT",
            "license": "80447",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in New Haven, CT

Sources for this page

Verify at the official NPI Registry.