NPIMap

Individual provider Active NPI

Cassidy M Dahn, MD

  • Critical Care Medicine (Internal Medicine) Physician
  • New York, NY
National Provider Identifier
1376809657
Registry record updated May 19, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X
License
288091 Issued in NY
Practice address
550 1St Ave
New York, NY 10016-6402
Phone
(212) 263-3293
NPI assigned
Apr 11, 2012
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 19, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X 288091 NY
Critical Care Medicine (Internal Medicine) Physician 207RC0200X 288091 NY Primary

Addresses

Primary practice location

550 1St Ave
New York, NY 10016-6402

Mailing address

550 1St Ave
New York, NY 10016-6402
Phone (212) 263-3293

Other practice location 1

111 E 210th St
Bronx, NY 10467-2401
Phone (718) 920-4321

Other practice location 2

111 E 210th St
Bronx, NY 10467-2401
Phone (718) 920-4321

Other identifiers 2

IdentifierTypeStateIssuer
288091OtherNYMEDICAL LICENSE
CDAHN1986MedicaidNY

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address cdahn260866@nyumc.direct-ci.com

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY
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
I20170905002092 NY Practitioner - Critical Care (Intensivists)Practitioner - Emergency Medicine 3577795624 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Critical Care (Intensivists)
Education
University of Connecticut School of Medicine, 2012
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
New York UniversityGroup PAC ID 1355232422, 5,925 clinicians

Practice addresses (Care Compare)

111 Broadway
FL 2
New York, NY 10006-1995
Phone (212) 263-9701

Hospital & facility affiliations

  • NYU Langone Hospitals Hospital, New York, NY, CCN 330214

Merit-based Incentive Payment System (MIPS)

Final score
90.8 of 100Reported as group
Quality
91.79
Promoting interoperability
100
Improvement activities
40
Cost
75.18

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
288091NYMDEmergency Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
New York University Emergency Medicine CurrentSince Jul 1, 2018 Accepting new patients
New York University CurrentSince Jul 1, 2018 Accepting new patients
Montefiore Medical Center CurrentSince Jul 12, 2019 Accepting new patients
Montefiore Medical Center Emergency Medicine CurrentSince Jul 12, 2019 Accepting new patients

Locations

111 E 210th St
Bronx, NY 10467

550 1st Ave
New York, NY 10016
Phone (212) 263-3293

111 Broadway
Fl 2
Trinity, NY 10006
Phone (212) 263-9700

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 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": "1334102400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1747612800000",
    "number": "1376809657",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "550 1ST AVE",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100166402",
            "telephone_number": "212-263-3293"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "550 1ST AVE",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100166402",
            "telephone_number": "212-263-3293"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "111 E 210th St",
            "address_purpose": "LOCATION",
            "city": "Bronx",
            "state": "NY",
            "postal_code": "104672401",
            "country_code": "US",
            "telephone_number": "718-920-4321",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "111 E 210th St",
            "address_purpose": "LOCATION",
            "city": "Bronx",
            "state": "NY",
            "postal_code": "104672401",
            "country_code": "US",
            "telephone_number": "718-920-4321",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DAHN",
        "first_name": "CASSIDY",
        "middle_name": "M",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2012-04-11",
        "last_updated": "2025-05-19",
        "certification_date": "2025-05-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "NY",
            "license": "288091",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "NY",
            "license": "288091",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICAL LICENSE",
            "identifier": "288091",
            "state": "NY"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "CDAHN1986",
            "state": "NY"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "cdahn260866@nyumc.direct-ci.com",
            "affiliation": "N",
            "address_1": "550 1st Ave",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100166402",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in New York, NY

Sources for this page

Verify at the official NPI Registry.