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WILLIAM T MASON M.D.
NPI 1679579338
Internal Medicine in Providence, RI

Active since June 27, 2005
1 HOPPIN ST, 3RD FLOOR, PROVIDENCE, RI 02903(401) 793-8400(401) 793-8402 Get Directions Write a Review

NPPES record last updated: September 7, 2007. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About William T Mason M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM T MASON M.D. (NPI 1679579338) is an individual internal medicine provider in Providence, Rhode Island, licensed in Rhode Island (MD05520) and active in the NPI registry since June 2005.

NPPES Registry Identity

NPI1679579338
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameWILLIAM T MASONCredential: M.D.
Location Address1 HOPPIN ST, 3RD FLOORProvidence, RI 02903-4141
Mailing Address1 Hoppin St, 3rd FloorProvidence, RI 02903-4141 · (401) 793-8400 · Fax (401) 793-8402
Phone(401) 793-8400
Fax(401) 793-8402
Sole ProprietorNo
Enumeration DateJune 27, 2005
Last NPPES UpdateSeptember 7, 2007
✔ NPI 1679579338 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in RI · MD05520
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedInternal Medicine · RheumatologyTaxonomy 207RR0500X · License MD05520 (RI)
1 HOPPIN ST, Providence, RI 02903
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Other Identifiers 3

Medicaid7001782RI
Medicare UPIND87545
Medicare ID-Type Unspecified7008151RI

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DEBRA J LOBATO-BARRERA PHD
Psychologist (Clinical Child & Adolescent)
1 HOPPIN ST, SUITE 204
PROVIDENCE, RI 02903
Providence County (401) 444-8945
SARA REGAN FORD MD
Pediatrics (Pediatric Cardiology)
1 HOPPIN ST, CORO CENTER SUITE 304
PROVIDENCE, RI 02903
Providence County (401) 444-4612
MARGARET CODISPOTI R.N., CDOE
Registered Nurse (Diabetes Educator)
1 HOPPIN ST, 3RD FLOOR
PROVIDENCE, RI 02903
Providence County (401) 793-8400
DAVID CARLSEN-LANDY MD
Psychiatry & Neurology (Child & Adolescent Psychiatry)
1 HOPPIN ST
PROVIDENCE, RI 02903
Providence County (972) 689-9471
KANDACE WEBB MOSSING
Psychologist
1 HOPPIN ST
PROVIDENCE, RI 02903
Providence County (401) 793-8806
MICHAEL E MIGLIORI MD
Ophthalmology (Ophthalmic Plastic and Reconstructive Surgery)
1 HOPPIN ST, SUITE 202
PROVIDENCE, RI 02903
Providence County (401) 444-6551
MICHAEL WALTHER
Psychologist (Clinical Child & Adolescent)
1 HOPPIN ST, SUITE 204
PROVIDENCE, RI 02903
Providence County (401) 444-8945
RHODE ISLAND HOSPITAL
Specialist
1 HOPPIN ST, CORO WEST SUITE 304A
PROVIDENCE, RI 02903
Providence County (401) 444-8639

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Mason's NPI number?

The NPI number for William Mason is 1679579338. It was assigned to this individual provider in the NPPES registry on June 27, 2005.

Where is William Mason located?

William Mason practices at 1 Hoppin St 3rd Floor, Providence, RI 02903. The listed phone number is (401) 793-8400.

What is William Mason's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for William Mason was last updated on September 7, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.