NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gary D Johnson, MD

Neurology Physician in Smithfield, RI · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1841226867

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Gary D Johnson
Credential MD
Sex Male
Practice address 900 Douglas Pike, Smithfield, RI, 02917
Phone (401) 618-5507
Fax (866) 228-6713
Enumeration date Jun 23, 2006
Last updated in NPPES Dec 18, 2025

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License MD08010 (RI) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
1841226867 Medicaid RI -
110047410A Medicaid MA -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Gary Johnson practice?
The practice location on file with NPPES is in Smithfield, RI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Gary Johnson?
The National Provider Identifier (NPI) for Gary Johnson is 1841226867, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-18.