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Physician Assistant

Kathryn R. Zimmer, PA

Works at hospitals in Oceanside, NY · New York

Summary

Kathryn R. Zimmer, PA is a physician assistant at 1 Healthy Way, Oceanside, NY 11572. Accepts Medicare assignment. In 2024, Kathryn R. Zimmer had 38 Original Medicare patients and 53 services. NPI 1306682018. 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: Physician assistant
  • Address: 1 Healthy Way, Oceanside, NY 11572 · Directions
  • Medicare: Accepts Medicare assignment
  • Hospital: Mount Sinai South Nassau
  • Group practice: Mount Sinai School of Medicine
  • School: Touro Un Col Of Osteopathic Medicine, New York · graduated 2024
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Kathryn R. Zimmer, 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 Kathryn R. Zimmer accept Medicare assignment?
Yes. Medicare's clinician data says Kathryn R. Zimmer 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 Kathryn R. Zimmer see?
In 2024, CMS data shows 38 Original Medicare patients and 53 services for Kathryn R. Zimmer. This counts Original Medicare only and measures volume, not quality.
What is Kathryn R. Zimmer's NPI number?
1306682018. 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 Kathryn R. Zimmer, 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 patients38
Services billed to Medicare53
Different services or procedures7
Participating Medicare providerYes
Average age of these patients78

Most frequent services

  1. Advance care planning, first 30 minutes (99497)25 services
  2. Insertion of non-tunneled central venous tube for infusion (5 years or older) (36556)11 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%
  • Diabetes68%
  • Heart failure63%
  • Ischemic heart disease61%
  • Atrial fibrillation58%

Hospitals where Kathryn R. Zimmer works

Medicare's Facility Affiliation Data lists Kathryn R. Zimmer 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.

  • Mount Sinai South NassauOceanside, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330198

Practice locations

Addresses where Kathryn R. Zimmer is enrolled with Medicare (CMS data updated October 2, 2026).

  • 1 Healthy WayOceanside, NY 11572

Group practices

Medicare enrollment lists Kathryn R. Zimmer as a member of this group (CMS data updated October 2, 2026).

  • Mount Sinai School of Medicine148 clinicians in the group

Specialties

Find other clinicians: Physician Assistant, New York →

Other physician assistants in Oceanside

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

All physician assistants in Oceanside →

Other clinicians in Mount Sinai School of Medicine

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

Clinician information

CredentialPA
SchoolTouro Un Col Of Osteopathic Medicine, New York
Graduation year2024
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1306682018
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