William Mason, MD

Addiction Medicine · Internal Medicine · Dermatology · Orthopedic Surgery · Pulmonology · Rheumatology · Infectious Disease

21+ years in practiceNPI: 1679579338Licensed in RI

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Credentials & Recognition

Specialties

Addiction MedicineInternal MedicineDermatologyOrthopedic SurgeryPulmonologyRheumatologyInfectious Disease

NPI sub-specialties

Internal Medicine207R00000X

Internal Medicine, Rheumatology207RR0500X

Practice Signals

Editorial signals beyond credentials. Patient transparency over opacity. See methodology.

Mid-Level (PA/NP) Use

Doctor-led visits

Years in Practice

21+ years

Estimated from NPI enumeration date

Featured in PBCMMG Rankings

#42

Top Rheumatologists in Rhode Island, 2026

Rheumatology · Rhode Island · 2026

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Frequently Asked Questions about Dr. William Mason, MD

Where does Dr. William Mason, MD practice?+
Dr. William Mason, MD practices in North Carolina, NC. 1 HOPPIN ST 3RD FLOOR PROVIDENCE, RI 029034141.
What is Dr. William Mason, MD's phone number?+
Dr. William Mason, MD's practice phone is 401-793-8400. Office contact information is verified on the PBCMMG profile.
What does Dr. William Mason, MD specialize in?+
Dr. William Mason, MD's primary specialty is Addiction Medicine, with additional focus on Internal Medicine, Dermatology, Orthopedic Surgery.
Is Dr. William Mason, MD board certified?+
Board certification status for Dr. William Mason, MD has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. William Mason, MD been practicing?+
Dr. William Mason, MD has been in active practice for 21+ years, based on NPI enumeration and state licensing records.
What is Dr. William Mason, MD's NPI number?+
Dr. William Mason, MD's National Provider Identifier (NPI) is 1679579338, registered in the federal NPPES registry.

Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards

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