NPIMap

Individual provider Active NPI

Mark S Kasper, MD

  • Internal Medicine Physician
  • Branford, CT
National Provider Identifier
1780648238
Registry record updated Jun 11, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
024717 Issued in CT
Practice address
144 N Main St Ste 5
Branford, CT 06405-3044
Phone
(203) 468-9775
Fax
(203) 468-2485
NPI assigned
Apr 13, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 11, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 024717 CT Primary

Addresses

Primary practice location

144 N Main St Ste 5
Branford, CT 06405-3044

Mailing address

144 N Main St Ste 5
Branford, CT 06405-3044
Phone (203) 468-9775

Other identifiers 3

IdentifierTypeStateIssuer
001309980MedicaidCT
110001474OtherCTPTAN
C00229OtherCTMEDICARE PTAN

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CT
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20120620000017 CT Practitioner - Internal Medicine 7012914724 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Yale University School of Medicine, 1981
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Internal Medicine of East Haven PCGroup PAC ID 5294732905, 3 clinicians

Practice addresses (Care Compare)

144 N Main St
Suite 5
Branford, CT 06405-3044
Phone (203) 468-9775

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
024717CTMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Internal Medicine of East Haven PC Internal Medicine CurrentSince Nov 9, 1988 Accepting new patients

Locations

144 N Main St
Ste 5
Branford, CT 06405

339 Hemingway Ave
East Haven, CT 06512
Phone (203) 468-9775

Interoperability endpoints

  • FHIR API: https://fhir4.healow.com/fhir/r4/GHECDA

Organizations & group practices 1

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 11

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": "1144886400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781136000000",
    "number": "1780648238",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "144 N MAIN ST STE 5",
            "city": "BRANFORD",
            "state": "CT",
            "postal_code": "064053044",
            "telephone_number": "203-468-9775",
            "fax_number": "203-468-2485"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "144 N MAIN ST STE 5",
            "city": "BRANFORD",
            "state": "CT",
            "postal_code": "064053044",
            "telephone_number": "203-468-9775",
            "fax_number": "203-468-2485"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KASPER",
        "first_name": "MARK",
        "middle_name": "S",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-13",
        "last_updated": "2026-06-11",
        "certification_date": "2026-06-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CT",
            "license": "024717",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "001309980",
            "state": "CT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PTAN",
            "identifier": "110001474",
            "state": "CT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE PTAN",
            "identifier": "C00229",
            "state": "CT"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Branford, CT

Sources for this page

Verify at the official NPI Registry.