Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

William S Eddy, DO

Individual provider Family Medicine Physician · NPI 1992788509

William S Eddy, DO is registered under Family Practice in Niles, Ohio. Graduated from Ohio University, College of Osteopathic Medicine in 1983, 43 years ago. Practices with Mercy Health Physicians Youngstown, LLC, a 117-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
43
Trained at
Ohio University, College of Osteopathic Medicine
Licensed in
OH
In the registry since
2005
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

929 Robbins Ave
Niles, OH 44446-2441 Not confirmed with CMS for 16 years — call before visiting
Phone: (330) 652-5512
Fax: (330) 652-5122
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 3699 (OH)

Record details

NPI number1992788509
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedNovember 29, 2005
Last updated in NPPESNovember 17, 2009

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Also practisesGENERAL PRACTICE
Medical schoolOHIO UNIVERSITY, COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1983 (43 years in practice)
Group practice Mercy Health Physicians Youngstown, Llc — 117 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients278
Services billed 1,873 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Patriot Homecare, Inc Home health agency · Girard, OH
  • Hmhp St Elizabeth Boardman Health Center Hospital · Boardman, OH
  • Mh St Elizabeth Youngstown Hospital Hospital · Youngstown, OH
  • Mh St Joseph Warren Hospital Hospital · Warren, OH

Colleagues at Mercy Health Physicians Youngstown, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 117 clinicians in the practice; 12 are shown here.

Other providers in Niles