Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Jonathan Paul Williams, MD
Neurology Physician in O Fallon, MO · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1700306867
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Registry record
Entity type Individual (Type 1)
Name Dr. Jonathan Paul Williams
Credential MD
Sex Male
Practice address 20 Progress Point Pkwy Ste 200, O Fallon, MO, 63368
Phone (636) 916-7060
Fax (636) 916-9421
Enumeration date Jun 21, 2017
Last updated in NPPES Apr 20, 2026
Taxonomy & licenses
2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 2021028092 (MO) Primary
2084E0001X Epilepsy Physician Allopathic & Osteopathic Physicians · License 2021028092 (MO) Secondary
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 |
|---|---|---|---|
| 200062189 | Medicaid | MO | - |
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.
Frequently asked questions
Where does Jonathan Williams practice?
The practice location on file with NPPES is in O Fallon, MO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jonathan Williams?
The National Provider Identifier (NPI) for Jonathan Williams is 1700306867, 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 2026-04-20.