DR. JONATHAN PAUL WILLIAMS MD
NPI 1700306867
Psychiatry & Neurology - Neurology in O Fallon, MO
About Dr. Jonathan Paul Williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JONATHAN PAUL WILLIAMS MD (NPI 1700306867) is an individual neurology provider in O Fallon, Missouri, licensed in Missouri (2021028092) and active in the NPI registry since June 2017. He is enrolled in Medicare PECOS, is affiliated with Barnes Jewish Hospital, and maintains a secondary practice location in Saint Louis.
NPPES Registry Identity
Specialties & Licenses 2
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
Secondary Practice Location 1
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Jonathan Paul Williams Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Barnes Jewish Hospital
Acute Care Hospitals · Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63368 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
O FALLON, MO 63368
O FALLON, MO 63368
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Jonathan Williams's NPI number?
The NPI number for Jonathan Williams is 1700306867. It was assigned to this individual provider in the NPPES registry on June 21, 2017.
Where is Jonathan Williams located?
Jonathan Williams practices at 20 Progress Point Pkwy Ste 200, O Fallon, MO 63368. The listed phone number is (636) 916-7060.
What is Jonathan Williams's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is Jonathan Williams enrolled in Medicare?
Yes. Jonathan Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
What insurance does Jonathan Williams accept?
Health plans from Cox HealthPlans list Jonathan Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Jonathan Williams affiliated with any hospitals?
According to CMS data, Jonathan Williams is affiliated with Barnes Jewish Hospital.
When was this NPI record last updated?
The NPPES record for Jonathan Williams was last updated on April 20, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.
