Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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William G. Tsiaras, MD

Individual provider Ophthalmology Physician · NPI 1376609180

William G. Tsiaras, MD is an Ophthalmology in Providence, Rhode Island. Graduated from Warren Alpert Medical School of Brown University in 1975, 51 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Rhode Island.

Years since qualifying
51
Trained at
Warren Alpert Medical School of Brown University
Licensed in
RI
In the registry since
2006
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

78 Baker St
Providence, RI 02905-4417
Phone: (401) 831-4592
Fax: (401) 831-4643
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 4952 (RI)

Record details

NPI number1376609180
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedDecember 28, 2006
Last updated in NPPESJuly 18, 2016
Mailing address78 Baker St, Providence, RI 02905-4417

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolWARREN ALPERT MEDICAL SCHOOL OF BROWN UNIVERSITY
Graduated 1975 (51 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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