Michael Antonchak, MD

Primary specialty

Pediatric Cardiology PhysicianTaxonomy code 2080P0202X

License

315709 Issued in NY

Practice address

550 1St Ave
New York, NY 10016-6402

Phone

(212) 263-5506

NPI assigned

May 1, 2019

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in NY

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

Specialty

Pediatric Medicine

Education

Other, 2019

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)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Networks

• Healthfirst Medicare Network H3359
• Healthfirst Medicare Network H9678
• Healthfirst Medicare Network H1722
• Healthfirst Medicare Network H5989

Interoperability endpoints

• Direct secure messaging: michael.antonchak.p1@direct.mmc.nextgenshare.com
• Direct secure messaging: mantonchak853792@nychhc.direct-ci.com

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.

• New York University

  dba NYU Faculty Group Practice

  • Cardiovascular Disease Physician
  • Boynton Beach, FL
  • NPI 1285826438

  NY

  Medicare reassignment Care Compare group NPD
• NYU Langone Hospitals

  • Internal Medicine Physician
  • New York, NY
  • NPI 1790975944
  Medicare reassignment NPD
• NYU Langone Hospitals

  dba NYU Langone Hospital - Suffolk

  • Psychiatric Hospital Unit
  • Patchogue, NY
  • NPI 1508687021
  NPD
• NYU Langone Hospitals

  dba NYU Lutheran Family Health Center Quality Care Group

  • Multi-Specialty Clinic/Center
  • Brooklyn, NY
  • NPI 1831549559
  NPD
• New York University

  dba NYU Langone Ambulatory Care Chelsea

  • Physical Medicine & Rehabilitation Physician
  • Boynton Beach, FL
  • NPI 1104787613
  NPD
• New York City Health and Hospitals Corporation

  dba Jacobi Medical Center

  • General Acute Care Hospital
  • Bronx, NY
  • NPI 1679587679
  NPD (past)

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

{
    "created_epoch": "1556668800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755129600000",
    "number": "1154986552",
    "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": "212-263-5506"
        },
        {
            "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": "212-263-5506"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ANTONCHAK",
        "first_name": "MICHAEL",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-05-01",
        "last_updated": "2025-08-14",
        "certification_date": "2025-08-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "2080P0202X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Cardiology",
            "state": "NY",
            "license": "315709",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Daniella Antolos, PHARMD
• Carrie V Anton, LAC.
• Mackenzie Anton, PHYSICIAN ASSISTANT
• Susan Anton, L.AC.
• Anthony Antonacci, MD
• Laura-Marie Antonelli, PA
• Matthew J Antonello, MD, MPH
• Anastasia Antonenko, OTR/L
• Cristina R Antonescu, MD
• Samantha N Antonietti, PT, DPT

• Pediatric Cardiology Physician in New York, NY
• Providers in New York, NY by specialty
• Pediatric Cardiology Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 14, 2025; 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.