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

William Freiberg

Individual provider Neurology Physician · NPI 1154579100

William Freiberg practises Neurology in Pittsburgh, Pennsylvania. Graduated from Philadelphia College of Osteopathic Medicine in 2008, 18 years ago. Practices with Allegheny Clinic, a 2,300-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
18
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
PA
In the registry since
2008
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Practice location Address checks out

4815 Liberty Ave Ste 439
Pittsburgh, PA 15224-2156
Phone: (412) 578-3925
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neurology Physician (primary) Taxonomy 2084N0400X · Licence OS016154 (PA)

Record details

NPI number1154579100
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedSeptember 3, 2008
Last updated in NPPESMay 24, 2021
Certification dateSeptember 30, 2020

Medicare enrollment

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

Medicare specialtyNEUROLOGY
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2008 (18 years in practice)
Group practice Allegheny Clinic — 2300 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 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 patients216
Services billed 305 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.

  • Ahn Wexford Hospital Hospital · Wexford, PA · listed as West Penn Allegheny Health System, Inc
  • West Penn Hospital Hospital · Pittsburgh, PA · listed as West Penn Allegheny Health System Inc
  • Saint Vincent Hospital Hospital · Erie, PA

Colleagues at Allegheny Clinic

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2300 clinicians in the practice; 12 are shown here.

Other providers in Pittsburgh