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Physician Assistant

Shawn S. Marhelski, PA

Works at hospitals in Dayton, OH · Ohio

Summary

Shawn S. Marhelski, PA is a physician assistant at 2400 Miami Valley Dr, Centerville, OH 45459. Phone: (513) 354-3700. Accepts Medicare assignment. In 2024, Shawn S. Marhelski had 274 Original Medicare patients and 4,911 services. NPI 1982855060. 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: 2400 Miami Valley Dr, Centerville, OH 45459 · Directions (6 more locations)
  • Phone: (513) 354‑3700
  • Medicare: Accepts Medicare assignment
  • Hospital: Miami Valley Hospital
  • Group practice: Premier Health Specialists Inc (+1 more)
  • School: graduated 2008
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Shawn S. Marhelski, 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 Shawn S. Marhelski accept Medicare assignment?
Yes. Medicare's clinician data says Shawn S. Marhelski 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 Shawn S. Marhelski see?
In 2024, CMS data shows 274 Original Medicare patients and 4,911 services for Shawn S. Marhelski. This counts Original Medicare only and measures volume, not quality.
What is Shawn S. Marhelski's NPI number?
1982855060. 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 Shawn S. Marhelski, 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 patients274
Services billed to Medicare4,911
Different services or procedures21
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Hyaluronan or derivative, durolane, for intra-articular injection, 1 mg (J7318)2,340 services
  2. Hyaluronan or derivative, synvisc or synvisc-one, for intra-articular injection, 1 mg (J7325)1,152 services
  3. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)636 services
  4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)214 services
  5. Aspiration and/or injection of fluid from large joint (20610)181 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%
  • Arthritis75%
  • Depression28%
  • Anxiety28%
  • Ischemic heart disease26%

Hospitals where Shawn S. Marhelski works

Medicare's Facility Affiliation Data lists Shawn S. Marhelski 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.

  • Miami Valley HospitalDayton, OH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 360051

Practice locations

Addresses where Shawn S. Marhelski is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

Group practices

Medicare enrollment lists Shawn S. Marhelski as a member of these groups (CMS data updated October 2, 2026).

  • Premier Health Specialists Inc580 clinicians in the group
  • Beacon Orthopaedics and Sports Medicine Ltd471 clinicians in the group

Specialties

Find other clinicians: Physician Assistant, Ohio →

Other physician assistants in Centerville

Clinicians with the same Medicare primary specialty in Centerville, OH — not a recommendation.

All physician assistants in Centerville →

Other clinicians in Premier Health Specialists Inc

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

Clinician information

CredentialPA
Graduation year2008
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1982855060
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