NPIMap

Individual provider Active NPI

Michael Emmanuel Karellas, M.D.

  • Urology Physician
  • New Haven, CT
National Provider Identifier
1376671396
Registry record updated Jun 12, 2023
On this page

Key facts

NPPES NPI Registry
Primary specialty
Urology PhysicianTaxonomy code 208800000X
License
055043 Issued in CT
Practice address
800 Howard Ave
New Haven, CT 06519-1369
Phone
(203) 737-6959
Fax
(203) 785-4043
NPI assigned
Mar 1, 2007
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 12, 2023

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Urology Physician 208800000X 60 241182 NY
Urology Physician 208800000X 25MA08557100 NJ
Urology Physician 208800000X 055043 CT Primary

Addresses

Primary practice location

800 Howard Ave
New Haven, CT 06519-1369

Mailing address

800 Howard Ave
New Haven, CT 06519-1369
Phone (203) 737-6959

Other identifiers 2

IdentifierTypeStateIssuer
0199770MedicaidNJ
P00944510OtherNJRR MCR PTAN

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CT, ND2 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
I20160511000716 CT Practitioner - Urology 3072667849 Reassigns benefits to 1 organization
I20260317001465 ND Practitioner - Urology 3072667849 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Urology
Education
University of Kansas School of Med (KC/Wich/Sal), 2001
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Yale UniversityGroup PAC ID 9436061736, 2,632 clinicians
St Alexius Medical CenterGroup PAC ID 8426960865, 239 clinicians

Practice addresses (Care Compare)

5520 Park Ave
Trumbull, CT 06611-3463
Phone (203) 337-8700

900 E Broadway Ave
Bismarck, ND 58501-4520
Phone (701) 530-7000

Hospital & facility affiliations

  • Greenwich Hospital Association - Hospital, Greenwich, CT, CCN 070018
  • Bridgeport Hospital Hospital, Bridgeport, CT, CCN 070010
  • Yale-New Haven Hospital Hospital, New Haven, CT, CCN 070022
  • Stamford Hospital Hospital, Stamford, CT, CCN 070006
  • CHI St Alexius Health Hospital, Bismarck, ND, CCN 350002

Merit-based Incentive Payment System (MIPS)

Final score
87.36 of 100Reported as group
Quality
77.36
Promoting interoperability
100
Improvement activities
40
Cost
74.27

Procedures performed for Medicare patients

ProcedureNumber of procedures
Prostate resection15
Melanoma (skin cancer) excision1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
055043CTMDUrology Physician
60 241182NYMDUrology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
St. Alexius Medical Center CurrentSince Mar 27, 2026 Accepting new patients
Yale University CurrentSince Feb 1, 2023 Accepting new patients
Yale University Current Accepting new patients
St Alexius Medical Center CurrentSince Mar 27, 2026 Accepting new patients
Yale University CurrentSince Feb 1, 2023 Accepting new patients

Locations

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

29 Hospital Plz
Ste 604
Stamford, CT 06902
Phone (203) 276-8545

5520 Park Ave
Trumbull, CT 06611
Phone (203) 334-7400

900 E Broadway Ave
Bismarck, ND 58501
Phone (701) 530-7300

Interoperability endpoints

  • Direct secure messaging: mkarellas603246@direct.ynhh.org

Organizations & group practices 5

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 7

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": "1172707200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1686528000000",
    "number": "1376671396",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "800 HOWARD AVE",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065191369",
            "telephone_number": "203-737-6959",
            "fax_number": "203-785-4043"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "800 HOWARD AVE",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065191369",
            "telephone_number": "203-737-6959",
            "fax_number": "203-785-4043"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KARELLAS",
        "first_name": "MICHAEL",
        "middle_name": "EMMANUEL",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-03-01",
        "last_updated": "2023-06-12",
        "certification_date": "2023-06-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208800000X",
            "taxonomy_group": "",
            "desc": "Urology",
            "state": "NY",
            "license": "60 241182",
            "primary": false
        },
        {
            "code": "208800000X",
            "taxonomy_group": "",
            "desc": "Urology",
            "state": "NJ",
            "license": "25MA08557100",
            "primary": false
        },
        {
            "code": "208800000X",
            "taxonomy_group": "",
            "desc": "Urology",
            "state": "CT",
            "license": "055043",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0199770",
            "state": "NJ"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RR MCR PTAN",
            "identifier": "P00944510",
            "state": "NJ"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in New Haven, CT

Sources for this page

Verify at the official NPI Registry.