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Orthopedic Surgery

William J. Warrender, MD

Works at hospitals in St Joseph, MI · Mishawaka, IN · Plymouth, IN · Michigan, Indiana

Summary

William J. Warrender, MD (Orthopedic Surgery) is listed by Medicare at 3 hospitals in St Joseph, MI, Mishawaka, IN and Plymouth, IN. NPI 1770902538. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about William J. Warrender, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Orthopedic SurgeryPrimary specialty
YesAccepts Medicare assignment
12Years since medical school (graduated 2014)
Jefferson Medical College Of Thomas Jefferson UniversityMedical school
MaleGender (as listed)
Central Indiana Orthopedics LLCGroup practice

Quick answers

Which hospitals does William J. Warrender work at?
Medicare's official clinician data lists William J. Warrender at 3 hospitals: Lakeland Hospital, St Joseph, Saint Joseph Regional Medical Center and Saint Joseph Regional Medical Center - Plymouth. This is where the clinician works or has privileges; call the hospital to confirm.
Where does William J. Warrender see patients?
Medicare's clinician data lists 4 practice locations, including Plymouth, IN, Muncie, IN and South Bend, IN. Call before your visit to confirm the address.
What is William J. Warrender's specialty?
Medicare lists Orthopedic Surgery as the primary specialty.
Does William J. Warrender accept Medicare assignment?
Yes. Medicare's clinician data says William J. Warrender accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for William J. Warrender?
(574) 247-9441, as listed in official Medicare / NPI Registry data.
What is William J. Warrender's NPI number?
1770902538. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where William J. Warrender works

Medicare's Facility Affiliation Data lists William J. Warrender at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where William J. Warrender is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists William J. Warrender as a member of this group (CMS data updated 2026-10-02).

  • Central Indiana Orthopedics LLC148 clinicians in the group

Specialties

Find other Orthopedic Surgery doctors in Indiana →

Other orthopedic surgeons in Plymouth

Clinicians with the same Medicare primary specialty in Plymouth, IN — not a recommendation.

All orthopedic surgeons in Plymouth →

Clinician information

CredentialMD
Medical schoolJefferson Medical College Of Thomas Jefferson University
Graduation year2014
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1770902538
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 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians