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Internal Medicine

Shawn R. Ruth, DO

Works at hospitals in Grand Rapids, MI · Greenville, MI · Michigan

Summary

Dr. Shawn R. Ruth, DO is an internal medicine doctor at 1202 W Oak St, Greenville, MI 48838. Phone: (616) 225-6477. Accepts Medicare assignment. NPI 1669429106. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 1202 W Oak St, Greenville, MI 48838 · Directions (1 more location)
  • Phone: (616) 225‑6477
  • Medicare: Accepts Medicare assignment
  • Hospitals: Spectrum Health, Spectrum Health United Hospital
  • Group practice: Spectrum Health United
  • Medical school: Philadelphia College Of Osteopathic Medicine · graduated 1990 (36 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Shawn R. Ruth, 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 R. Ruth accept Medicare assignment?
Yes. Medicare's clinician data says Shawn R. Ruth 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.
What is Shawn R. Ruth's NPI number?
1669429106. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Shawn R. Ruth works

Medicare's Facility Affiliation Data lists Shawn R. Ruth 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.

  • Spectrum HealthGrand Rapids, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230038
  • Spectrum Health United HospitalGreenville, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 230035

Practice locations

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

  • 1202 W Oak StGreenville, MI 48838
  • 707 S Greenville W Dr, Im/pedsGreenville, MI 48838 (616) 225‑6477

Group practices

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

  • Spectrum Health United92 clinicians in the group

Specialties

Find other Internal Medicine doctors in Michigan →

Other internal medicine doctors in Michigan

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

All internal medicine doctors in Michigan →

Other clinicians in Spectrum Health United

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

Clinician information

CredentialDO
Medical schoolPhiladelphia College Of Osteopathic Medicine
Graduation year1990 (36 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1669429106
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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians