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Physical Medicine and Rehabilitation

William G. Filer Iii, MD

Works at hospitals in Chapel Hill, NC · North Carolina

Summary

Dr. William G. Filer Iii, MD is a rehabilitation doctor at 101 Manning Dr, Chapel Hill, NC 27514. Phone: (984) 974-9747. Accepts Medicare assignment. In 2024, William G. Filer Iii had 161 Original Medicare patients and 10,310 services. NPI 1780845792. 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: Rehabilitation doctor (Medicare lists Physical Medicine and Rehabilitation)
  • Address: 101 Manning Dr, Chapel Hill, NC 27514 · Directions (3 more locations)
  • Phone: (984) 974‑9747
  • Medicare: Accepts Medicare assignment
  • Hospital: UNC Hospitals
  • Group practice: University of North Carolina at Chapel Hill
  • Medical school: Saint Louis University School Of Medicine · graduated 2008 (18 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about William G. Filer Iii, 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 William G. Filer Iii accept Medicare assignment?
Yes. Medicare's clinician data says William G. Filer Iii 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 William G. Filer Iii see?
In 2024, CMS data shows 161 Original Medicare patients and 10,310 services for William G. Filer Iii. This counts Original Medicare only and measures volume, not quality.
What is William G. Filer Iii's NPI number?
1780845792. 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 William G. Filer Iii, 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 patients161
Services billed to Medicare10,310
Different services or procedures35
Participating Medicare providerYes
Average age of these patients68

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)372 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)71 services
  3. Hospital discharge day management, 30 minutes or less (99238)35 services
  4. Injection of chemical for paralysis of nerve muscles on arm or leg, 1-4 muscles, each additional extremity (64643)31 services
  5. Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle (95874)31 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 cholesterol66%
  • Arthritis58%
  • Depression45%
  • Anxiety44%
  • Diabetes37%

Hospitals where William G. Filer Iii works

Medicare's Facility Affiliation Data lists William G. Filer Iii 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.

  • UNC HospitalsChapel Hill, NC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 340061

Practice locations

Addresses where William G. Filer Iii is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists William G. Filer Iii as a member of this group (CMS data updated October 2, 2026).

  • University of North Carolina at Chapel Hill2,052 clinicians in the group

Specialties

Find other Physical Medicine and Rehabilitation doctors in North Carolina →

Other rehabilitation doctors in Chapel Hill

Clinicians with the same Medicare primary specialty in Chapel Hill, NC — not a recommendation.

All rehabilitation doctors in Chapel Hill →

Other clinicians in University of North Carolina at Chapel Hill

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

Clinician information

CredentialMD
Medical schoolSaint Louis University School Of Medicine
Graduation year2008 (18 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1780845792
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