Alan Zakko, MD

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

67370 Issued in CT

Practice address

20 York Street, CB-2041
New Haven, CT 06510-3220

Phone

(203) 688-4748

Fax

(203) 688-4740

NPI assigned

May 14, 2018

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Northeast Medical Group, Inc.

  • Internal Medicine Physician
  • Bridgeport, CT
  • NPI 1043278351
  Medicare reassignment NPD
• Mill Hill Medical Consultants Inc

  • Hospitalist Physician
  • Greenwich, CT
  • NPI 1841520293

  Gastroenterology

  NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1526256000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782864000000",
    "number": "1982194130",
    "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": "203-688-4748",
            "fax_number": "203-688-4740"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "20 YORK STREET, CB-2041",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065103220",
            "telephone_number": "203-688-4748",
            "fax_number": "203-688-4740"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "25 Newell Rd Ste E36",
            "address_purpose": "LOCATION",
            "city": "Bristol",
            "state": "CT",
            "postal_code": "060105132",
            "country_code": "US",
            "telephone_number": "860-583-9252",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "20 York St Dept Of",
            "address_purpose": "LOCATION",
            "city": "New Haven",
            "state": "CT",
            "postal_code": "065103220",
            "country_code": "US",
            "telephone_number": "203-688-4242",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ZAKKO",
        "first_name": "ALAN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-05-14",
        "last_updated": "2026-07-01",
        "certification_date": "2026-07-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "CT",
            "license": "67370",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CT",
            "license": "67370",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Bashar Zaidat, MD
• Danish Mohammed Zaidi
• Samir Zaidi, MD,PHD
• Katya Calafiore Zajac, MAAT
• Ariel Zak, RN
• Mina Hisham Zaky, MD
• Ziad Zalaquett, MD, MSC
• Momina Zaman, LCSW
• Saif Zaman
• Sarah Mary Zammiello, LCSW

• Gastroenterology Physician in New Haven, CT
• Providers in New Haven, CT by specialty
• Gastroenterology Physician in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 1, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.