Gary D. Johnson, MD
Neurology Physician · Smithfield, RI
Gary D. Johnson, MD is a neurology physician with a practice address in Smithfield, Rhode Island, and NPI 1841226867, issued on Jun 23, 2006. Check the license (Rhode Island MD08010, as entered in NPPES) on the Rhode Island Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Gary D. Johnson
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- MD08010 RI
Self-reported in NPPES; status is on the state search - Practice location
- 900 Douglas Pike, Smithfield, RI 02917
- Phone
- (401) 618-5507
- Enumerated
- Jun 23, 2006
- Record last updated
- Dec 18, 2025
- Fax
- (866) 228-6713
- Medicaid IDs
- 1841226867 RI
110047410A MA - Medicare enrollment
- Enrolled (PECOS I20100819000368); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 1985
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 97 in Rhode Island → Look up another NPI →
Also registered at 900 Douglas Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sydney Amado-Tuthill, NPFamily Nurse Practitioner1538718390
- Abbey Barkley Davis, NPFamily Nurse Practitioner1568179547
- Lauren Conner, MD, MAInternal Medicine Physician1306338082
- Roderick Spears, M.D.Neurology Physician1336177096
- Susan Weinman, MDNeurology Physician1215969944
Verify Gary D. Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersRhode Island Board of Medical Licensure and Discipline
Search for license MD08010Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average neurology physician in 2024
580 Medicare Part D claims for 81 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D.
Most prescribed
- Sumatriptan Succinate79 claims
- Gabapentin54 claims
- Levetiracetam46 claims
- Ondansetron Hcl28 claims
- Topiramate26 claims
- Rizatriptan23 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.
Industry payments in 2024: $29.66
1 payment: food and beverage; the largest payer was Abbvie Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
3 hospitals and group practices
- Rhode Island HospitalProvidence, RI · Acute Care Hospitals4 of 5 stars
- Brown NeurologyProvidence, RI
- Lifespan Physician Group IncNorth Providence, RI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Gary D. Johnson among 97 neurology physician records in Rhode Island
Gary D. Johnson, MD 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
- Graduated1985 · median 2005 among the 68 with a school on file
- Record last updated2025 · 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).
3 neurology physician records list a practice address in Smithfield
They are 3 of the 202 NPPES records with a practice address in Smithfield, and 97 neurology physician records in Rhode Island.
All 97 in Rhode Island → Every provider in Smithfield → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Roderick Spears, M.D.Smithfield, RI 029171336177096
- Susan Weinman, MDSmithfield, RI 029171215969944
- Cyril Burke, M.D.Johnston, RI 029191619963378
- Preeti Gupta, MDEast Providence, RI 029151023135720
- Mary Lussier, MDRiverside, RI 029151437224136
- Albert Marano, M.D.Johnston, RI 029191336290311
- Norman Gordon, M.D.East Providence, RI 029141467481648
- Fred Griffith, M.D.East Providence, RI 029141639108509
Common questions
What is Gary D. Johnson, MD's NPI number?
Gary D. Johnson, MD's National Provider Identifier (NPI) is 1841226867, issued on Jun 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary D. Johnson, MD located?
The NPPES record lists a practice address at 900 Douglas Pike, Smithfield, RI, 02917. Phone: (401) 618-5507. Providers update this record themselves, so call before visiting.
How can I verify Gary D. Johnson, MD's license?
NPPES lists Rhode Island license number MD08010, 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 Gary D. Johnson, MD prescribe under Medicare Part D?
In 2024, Gary D. Johnson, MD had 580 Medicare Part D claims for 81 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.