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Orthopedic Surgery

Marc D. Dyrszka, MD

Works at hospitals in Middletown, NY · New York

Summary

Dr. Marc D. Dyrszka, MD is an orthopedic surgeon at 4401 College Dr, Rock Springs, WY 82901. Phone: (307) 448-3220. Accepts Medicare assignment. In 2024, Marc D. Dyrszka had 193 Original Medicare patients and 461 services. NPI 1861719585. 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: Orthopedic surgeon (Medicare lists Orthopedic Surgery)
  • Address: 4401 College Dr, Rock Springs, WY 82901 · Directions (2 more locations)
  • Phone: (307) 448‑3220
  • Medicare: Accepts Medicare assignment
  • Hospital: Garnet Health Medical Center
  • Group practice: Orthopaedics of Steamboat Springs PC (+1 more)
  • Medical school: Columbia University College Of Physicians And Surgeons · graduated 2010 (16 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Marc D. Dyrszka, 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 Marc D. Dyrszka accept Medicare assignment?
Yes. Medicare's clinician data says Marc D. Dyrszka 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 Marc D. Dyrszka see?
In 2024, CMS data shows 193 Original Medicare patients and 461 services for Marc D. Dyrszka. This counts Original Medicare only and measures volume, not quality.
What is Marc D. Dyrszka's NPI number?
1861719585. 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 Marc D. Dyrszka, 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 patients193
Services billed to Medicare461
Different services or procedures61
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)119 services
  2. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)60 services
  3. X-ray of lower and sacral spine, minimum of 4 views (72110)24 services
  4. Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)23 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 cholesterol75%
  • Arthritis75%
  • High blood pressure73%
  • Ischemic heart disease34%
  • Anxiety31%
  • Diabetes29%

Hospitals where Marc D. Dyrszka works

Medicare's Facility Affiliation Data lists Marc D. Dyrszka 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.

  • Garnet Health Medical CenterMiddletown, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330126

Practice locations

Addresses where Marc D. Dyrszka is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Marc D. Dyrszka as a member of these groups (CMS data updated October 2, 2026).

  • Orthopaedics of Steamboat Springs PC27 clinicians in the group
  • Gotham Spine and Brain Surgery PLLC9 clinicians in the group

Specialties

Find other Orthopedic Surgery doctors in Wyoming →

Other orthopedic surgeons in Rock Springs

Clinicians with the same Medicare primary specialty in Rock Springs, WY — not a recommendation.

All orthopedic surgeons in Rock Springs →

Other clinicians in Orthopaedics of Steamboat Springs PC

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

Clinician information

CredentialMD
Medical schoolColumbia University College Of Physicians And Surgeons
Graduation year2010 (16 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1861719585
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