NPPES file of Aug 9, 2026

Michael Antonchak, MD

Pediatric Cardiology Physician · New York, NY

Michael Antonchak, MD is a pediatric cardiology physician with a practice address in New York, New York, and NPI 1154986552, issued on May 1, 2019. Check the license (New York 315709, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1154986552
Name
Michael Antonchak
Credential
MD
Primary taxonomy
Pediatric Cardiology Physician 2080P0202X
License number
315709 NY
Self-reported in NPPES; status is on the state search
Practice location
550 1St Ave, New York, NY 10016
Phone
(212) 263-5506
Enumerated
May 1, 2019
Record last updated
Aug 14, 2025
Medicare enrollment
Enrolled (PECOS I20250722002116); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest pediatric cardiology physician records → All 246 in New York → Look up another NPI →

Also registered at 550 1St Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Clarisse AbanillaPhysician Assistant1598445579
  2. Ehab Abaza, MDInternal Medicine Physician1114507555
  3. Valentino Abballe, M.D.Diagnostic Radiology Physician1710305081
  4. Diana Abbas, MDStudent in an Organized Health Care Education/Training Program1568105633
  5. Germeen AbdelmessihAcute Care Nurse Practitioner1134840028
  6. Kathryn Abe-Ridgway, MDStudent in an Organized Health Care Education/Training Program1629865324

Verify Michael Antonchak in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
    Search for license 315709    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New York license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. New York UniversityNew York, NY

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Michael Antonchak among 246 pediatric cardiology physician records in New York

Michael Antonchak, MD is one of 246 pediatric cardiology physician records with a practice address in New York. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 94% of them.

  • NPI issued2019 · 94% of these records are older, 2% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 54% of these records are
  • Graduated2019 · median 2004 among the 134 with a school on file
  • Record last updated2025 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0202X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatric Cardiology Physician providers in New York

There are 246 pediatric cardiology physician records in New York.

All 246 in New York → Every provider in New York → Pediatric Cardiology Physician nationwide →

The 8 pediatric cardiology physician records with the nearest ZIP codes

  1. Cynthia Amirtharaj, MDNew York, NY 100161275791337
  2. Melissa Busovsky-McNeal, M.D.New York, NY 100161164748158
  3. Sujata Chakravarti, M.D.New York, NY 100161578730966
  4. Anne Chun, M.D.New York, NY 100161346237229
  5. Gillian Henry, MDNew York, NY 100161376562017
  6. Maya KailasNew York, NY 100161932668944
  7. Alan Langsner, M.D.New York, NY 100161619966702
  8. Achiau Ludomirsky, MDNew York, NY 100161770509994

Common questions

What is Michael Antonchak, MD's NPI number?

Michael Antonchak, MD's National Provider Identifier (NPI) is 1154986552, issued on May 1, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Michael Antonchak, MD located?

The NPPES record lists a practice address at 550 1St Ave, New York, NY, 10016. Phone: (212) 263-5506. Providers update this record themselves, so call before visiting.

How can I verify Michael Antonchak, MD's license?

NPPES lists New York license number 315709, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.