NPPES file of Aug 9, 2026

William Mason Stone, M.D.

Neurology Physician · Providence, RI

William Mason Stone, M.D. is a neurology physician with a practice address in Providence, Rhode Island, and NPI 1164528337, issued on Sep 15, 2006. Check the license (Rhode Island 06596, as entered in NPPES) on the Rhode Island Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1164528337
Name
William Mason Stone
Credential
M.D.
Primary taxonomy
Neurology Physician 2084N0400X
License number
06596 RI
Self-reported in NPPES; status is on the state search
Practice location
100 Highland Ave, Providence, RI 02906
Phone
(401) 351-3312
Enumerated
Sep 15, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(401) 351-0036
Medicaid ID
WS51375 RI
Medicare enrollment
Enrolled (PECOS I20040506000278); accepts Medicare assignment
Medical or professional school
Warren Alpert Medical School Of Brown University, 1976
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 100 Highland Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Elizabeth Altenhein, MDSurgery Physician1689670044
  2. Brianna Boulanger, MTMassage Therapist1306274584
  3. Marilyn Castro, LMHC-A, M. OF EDUCounselor1265267140
  4. Man Chin Chang, M.D.Endocrinology, Diabetes & Metabolism Physician1346442563
  5. Jenna CostaFamily Nurse Practitioner1326710427
  6. Robert Dobrzynski, M.D.Endocrinology, Diabetes & Metabolism Physician1598863599

Verify William Mason Stone in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersRhode Island Board of Medical Licensure and Discipline
    Search for license 06596
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Rhode Island license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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67% fewer Medicare Part D claims than the average neurology physician in 2024

447 Medicare Part D claims for 37 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 13 claims were for opioids.

  1. William Stone447
  2. Specialty average1,370

Most prescribed

  1. Gabapentin50 claims
  2. Baclofen36 claims
  3. Topamax34 claims
  4. Topiramate29 claims
  5. Lorazepam26 claims
  6. Carbamazepine25 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

William Mason Stone among 97 neurology physician records in Rhode Island

William Mason Stone, M.D. is one of 97 neurology physician records with a practice address in Rhode Island. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.

  • NPI issued2006 · 8% of these records are older, 51% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated1976 · median 2005 among the 68 with a school on file
  • Record last updated2007 · 48% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Rhode Island practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurology Physician providers in Rhode Island

There are 97 neurology physician records in Rhode Island.

The 8 neurology physician records with the nearest ZIP codes

  1. Laura De Lima Xavier, MDProvidence, RI 029061902426604
  2. Joseph Friedman, MDProvidence, RI 029061477549632
  3. Jules Friedman, MDProvidence, RI 029061881740322
  4. Petro Karanasias, MDProvidence, RI 029061124071097
  5. Maheen Rana, MDProvidence, RI 029061407413578
  6. Kenneth Rickler, MDProvidence, RI 029061902810369
  7. Stephen Salloway, MDProvidence, RI 029061891701116
  8. J Easton, MDProvidence, RI 029051043254329

Common questions

What is William Mason Stone, M.D.'s NPI number?

William Mason Stone, M.D.'s National Provider Identifier (NPI) is 1164528337, issued on Sep 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Mason Stone, M.D. located?

The NPPES record lists a practice address at 100 Highland Ave, Providence, RI, 02906. Phone: (401) 351-3312. Providers update this record themselves, so call before visiting.

How can I verify William Mason Stone, M.D.'s license?

NPPES lists Rhode Island license number 06596, as entered by the provider. Search the Rhode Island Board of Medical Licensure and Discipline at https://healthri.mylicense.com/Verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does William Mason Stone, M.D. prescribe under Medicare Part D?

In 2024, William Mason Stone, M.D. had 447 Medicare Part D claims for 37 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.