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Internal Medicine

Joshua R. Stelmack, DO

Works at hospitals in Corry, PA · Pennsylvania

Summary

Dr. Joshua R. Stelmack, DO is an internal medicine doctor at 354 Clymer Corry Rd, Clymer, NY 14724. Phone: (716) 355-2248. Accepts Medicare assignment. In 2024, Joshua R. Stelmack had 25 Original Medicare patients and 49 services. NPI 1124519616. 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: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 354 Clymer Corry Rd, Clymer, NY 14724 · Directions (1 more location)
  • Phone: (716) 355‑2248
  • Medicare: Accepts Medicare assignment
  • Hospital: Lecom Health Corry Memorial Hospital
  • Group practice: Corry Memorial Hospital Association
  • Medical school: Lake Erie College Of Osteopathic Medicine, Erie · graduated 2018 (8 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Joshua R. Stelmack, 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 Joshua R. Stelmack accept Medicare assignment?
Yes. Medicare's clinician data says Joshua R. Stelmack 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 Joshua R. Stelmack see?
In 2024, CMS data shows 25 Original Medicare patients and 49 services for Joshua R. Stelmack. This counts Original Medicare only and measures volume, not quality.
What is Joshua R. Stelmack's NPI number?
1124519616. 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 Joshua R. Stelmack, 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 patients25
Services billed to Medicare49
Different services or procedures10
Participating Medicare providerYes
Average age of these patients79

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%
  • Heart failure68%
  • Arthritis60%
  • Ischemic heart disease56%
  • Depression56%

Hospitals where Joshua R. Stelmack works

Medicare's Facility Affiliation Data lists Joshua R. Stelmack 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.

Practice locations

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

Group practices

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

  • Corry Memorial Hospital Association30 clinicians in the group

Specialties

Find other Internal Medicine doctors in New York →

Other internal medicine doctors in New York

Clinicians with the same Medicare primary specialty in New York — not a recommendation.

All internal medicine doctors in New York →

Other clinicians in Corry Memorial Hospital Association

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

Clinician information

CredentialDO
Medical schoolLake Erie College Of Osteopathic Medicine, Erie
Graduation year2018 (8 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1124519616
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