Internal Medicine
WILLIAM MASON M.D.
Identity confirmed via CMS NPPES · September 30, 2026 · A directory match is not a coverage approval.
Is this your practice? This listing was imported from public provider identity data (CMS NPPES) and has not yet been claimed. Claim this listing to confirm the practice details. Plan acceptance stays unpublished until the practice reports it.
Public record
NPI 1679579338 · enumerated 2005-06-27 · record updated 2007-09-07. Source: CMS NPPES. A listing is not a TRICARE network approval.
NPPES recordGoogle Maps Apple Maps OpenStreetMap
Addresses and phones
- Mailing address 1 HOPPIN ST, 3RD FLOOR, PROVIDENCE, RI, 02903-4141 (401) 793-8400 Fax (401) 793-8402 Google Maps Apple Maps OpenStreetMap
- Practice location 1 HOPPIN ST, 3RD FLOOR, PROVIDENCE, RI, 02903-4141 (401) 793-8400 Fax (401) 793-8402 Google Maps Apple Maps OpenStreetMap
Specialties
- Internal Medicine 207R00000X · Primary · License MD05520 RI
- Internal Medicine, Rheumatology 207RR0500X · License MD05520 RI
In this directory
Locations and evidence
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Practice location
PROVIDENCE, RI, 029034141
Accepting new patientsNot reportedCMS NPPES · September 30, 2026
Plan acceptance
- No published plan acceptance yet. Confirm directly with the practice, or claim this listing if it's yours.