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Anesthesiology

Renata A. Kowal, MD

Works at hospitals in Bay Shore, NY · New York

Summary

Dr. Renata A. Kowal, MD is an anesthesiologist at 301 E Main St, Bay Shore, NY 11706. Phone: (914) 666-8866. Accepts Medicare assignment. In 2024, Renata A. Kowal had 92 Original Medicare patients and 219 services. NPI 1679716435. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Anesthesiologist (Medicare lists Anesthesiology)
  • Address: 301 E Main St, Bay Shore, NY 11706 · Directions
  • Phone: (914) 666‑8866
  • Medicare: Accepts Medicare assignment
  • Hospital: Ns/Lij HS Southside Hospital
  • Group practice: North Shore - Lij Anesthesiology, PC
  • Medical school: State University Of New York At Stony Brook, School Of Medicine · graduated 2005 (21 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Renata A. Kowal, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Renata A. Kowal accept Medicare assignment?
Yes. Medicare's clinician data says Renata A. Kowal accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Renata A. Kowal see?
In 2024, CMS data shows 92 Original Medicare patients and 219 services for Renata A. Kowal. This counts Original Medicare only and measures volume, not quality.
What is Renata A. Kowal's NPI number?
1679716435. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Renata A. Kowal, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients92
Services billed to Medicare219
Different services or procedures20
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Insertion of artery tube for blood sampling or infusion through skin (36620)68 services
  2. Anesthesia for procedure on heart and large blood vessels (00560)35 services
  3. Anesthesia for heart artery bypass grafting on heart-lung machine (00567)26 services
  4. Ultrasonic guidance for blood vessel access (76937)23 services
  5. Insertion of non-tunneled central venous tube for infusion (5 years or older) (36556)22 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Ischemic heart disease75%
  • Heart failure64%
  • Arthritis55%
  • Chronic kidney disease52%

Hospitals where Renata A. Kowal works

Medicare's Facility Affiliation Data lists Renata A. Kowal at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Ns/Lij HS Southside HospitalBay Shore, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330043

Practice locations

Addresses where Renata A. Kowal is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Renata A. Kowal as a member of this group (CMS data updated October 2, 2026).

  • North Shore - Lij Anesthesiology, PC1,003 clinicians in the group

Specialties

Find other Anesthesiology doctors in New York →

Other anesthesiologists in Bay Shore

Clinicians with the same Medicare primary specialty in Bay Shore, NY — not a recommendation.

All anesthesiologists in Bay Shore →

Other clinicians in North Shore - Lij Anesthesiology, PC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolState University Of New York At Stony Brook, School Of Medicine
Graduation year2005 (21 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1679716435
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians