1. Home
  2. Directory
  3. New York
  4. New York New York
  5. Internal Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. GREGORY TADEUSZ MARECKI M.D.
NPI 1881129856
Internal Medicine - Advanced Heart Failure and Transplant Cardiology in New York, NY

Active since April 26, 2017PECOS Enrolled
550 1ST AVE, NEW YORK, NY 10016(212) 263-5506 Get Directions Write a Review

NPPES record last updated: August 18, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Aug 18, 2026, Jul 29, 2026, Jul 16, 2020 and 1 more (4 updates tracked since 2017).

About Dr. Gregory Tadeusz Marecki M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GREGORY TADEUSZ MARECKI M.D. (NPI 1881129856) is an individual advanced heart failure and transplant cardiology provider in New York, New York, licensed in New York (304273) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1881129856
Entity TypeIndividualMale
Primary Taxonomy207RA0001X
Provider Legal NameDR. GREGORY TADEUSZ MARECKICredential: M.D.
Location Address550 1ST AVENew York, NY 10016-6402
Mailing Address550 1st AveNew York, NY 10016-6402 · (212) 263-5506
Phone(212) 263-5506
Sole ProprietorNo
Enumeration DateApril 26, 2017
Last NPPES UpdateAugust 18, 20264 updates tracked since enumeration
NPPES CertifiedAugust 18, 2026
✔ NPI 1881129856 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Advanced Heart Failure and Transplant CardiologyAllopathic & Osteopathic Physicians
Taxonomy Code207RA0001X
License✔ Licensed in NY · 304273
Definition
Specialists in Advanced Heart Failure and Transplant Cardiology would participate in the inpatient and outpatient management of patients with advanced heart failure across the spectrum from consideration for high-risk cardiac surgery, cardiac transplantation, or mechanical circulatory support, to pre-and post-operative evaluation and management of patients with cardiac transplants and mechanical support devices, and end-of-life care for patients with end-stage heart failure.
Also ListedHospitalistTaxonomy 208M00000X · License 304273 (NY)
550 1ST AVE, New York, NY 10016
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Gregory Tadeusz Marecki M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10016 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$150.24 typical visit price
range $65.69 – $198.19
Typical copayment $37.56 (range $16.42 – $49.54)
Most-billed visit code 99204
Established Patient
$114.88 typical visit price
range $21.20 – $160.66
Typical copayment $28.72 (range $5.30 – $40.16)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. SHARON URALIL D.O.
Internal Medicine
550 1ST AVE
NEW YORK, NY 10016
New York County (212) 263-3293
DR. DIANA TREVAS FLEISHER
Emergency Medicine (Pediatric Emergency Medicine)
550 1ST AVE
NEW YORK, NY 10016
New York County (212) 263-3293
DR. MONICA GUPTA M.D.
Allergy & Immunology
550 1ST AVE, NBV 16N30, INTERNAL MEDICINE RESIDENCY PROGRAM
NEW YORK, NY 10016
New York County (212) 263-6397
CHRISTINE CHAN M.D.
Student in an Organized Health Care Education/Training Program
550 1ST AVE
NEW YORK, NY 10016
New York County (212) 263-5506
DR. MATTHEW CHIARELLO MD
Radiology (Vascular & Interventional Radiology)
550 1ST AVE
NEW YORK, NY 10016
New York County (212) 263-5506
DR. MEGAN ELIZABETH JENKINS M.D.
Surgery
550 1ST AVE
NEW YORK, NY 10016
New York County (212) 263-7300
DR. MANAN PATEL M.D.
Student in an Organized Health Care Education/Training Program
550 1ST AVE
NEW YORK, NY 10016
New York County (212) 263-5506
VICKY CHIANG
Student in an Organized Health Care Education/Training Program
550 1ST AVE
NEW YORK, NY 10016
New York County (212) 263-5506

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Marecki's NPI number?

The NPI number for Gregory Marecki is 1881129856. It was assigned to this individual provider in the NPPES registry on April 26, 2017.

Where is Gregory Marecki located?

Gregory Marecki practices at 550 1st Ave, New York, NY 10016. The listed phone number is (212) 263-5506.

What is Gregory Marecki's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Advanced Heart Failure and Transplant Cardiology, with taxonomy code 207RA0001X.

Is Gregory Marecki enrolled in Medicare?

Yes. Gregory Marecki is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Gregory Marecki was last updated on August 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.