NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John R Smithson Jr., MD

Neurological Surgery Physician in Grove, OK · enumerated 2005.

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

National Provider Identifier

1669465811

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name John R Smithson Jr.
Credential MD
Sex Male
Practice address 1120 Neo Loop, Grove, OK, 74344
Phone (918) 786-9568
Fax (918) 293-3116
Enumeration date Aug 23, 2005
Last updated in NPPES Nov 7, 2012

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 11399 (OK) 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
100088280A Medicaid OK -

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

Is NPI 1669465811 active?
Yes, as of the latest NPPES snapshot, NPI 1669465811 is active (record last updated 2012-11-07).
How do I verify John Smithson's NPI record?
Cross-check NPI 1669465811 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-11-07.