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

Individual provider Diagnostic Radiology Physician · NPI 1194723452

William Downer, MD practises Diagnostic Radiology in Washington, Pennsylvania. Graduated from University of Pittsburgh School of Medicine in 1986, 40 years ago. Practices with Greater Washington Radiologists, Inc, a 5-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
40
Trained at
University of Pittsburgh School of Medicine
Licensed in
PA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

155 Wilson Ave
Washington, PA 15301-3336 Not confirmed with CMS for 19 years — call before visiting
Phone: (724) 225-7000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence MD039577E (PA)

Record details

NPI number1194723452
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 12, 2005
Last updated in NPPESJuly 18, 2007

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF PITTSBURGH SCHOOL OF MEDICINE
Graduated 1986 (40 years in practice)
Group practice Greater Washington Radiologists, Inc. — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 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 patients1,356
Services billed 2,035 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Colleagues at Greater Washington Radiologists, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Washington