Jonathan Williams, MD
NPI 1700306867 · Neurology Physician · O Fallon, MO
Enrolled with Medicare as Practitioner - Epileptologists · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Williams, MD is a Neurology Physician provider in O Fallon, MO (NPI 1700306867).
Provider details
- NPI number
- 1700306867
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2021028092 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
242 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Measurement of Brain Wave Activity With Video (veeg), 12-26 Hours With Review and Report By Health Care Professional95720 | 99 | $196 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 48 | $16 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 37 | $173 |
| Prolonged Office Or Other Outpatient Evaluation and Management Service(s) Beyond the Maximum Required Time of the Primary Procedure Which Has Been Selected Using Total Time on the Date of the Primary Service; Each Additional 15 Minutes By the Physician OrG2212 | 26 | $31 |
| Measurement of Brain Wave Activity (eeg), Awake and Asleep95819 | 17 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levetiracetam | 118 | 32 |
| Lamotrigine | 81 | 17 |
| Lacosamide | 61 | — |
| Cenobamatebrand: Xcopri | 39 | — |
| Clonazepam | 28 | — |
| Divalproex Sodium | 19 | — |
| Phenobarbital | 19 | — |
| Zonisamide | 18 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$62 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 4921 Parkview PlDiv Neurology Epilepsy, Ste 6cSaint Louis, MO 63110-1032Phone: (314) 362-7845Fax: (314) 362-0296
Registry dates
- Enumerated
- 2017-06-21
- Last updated
- 2026-04-20
- Certified
- 2026-04-20
Frequently asked questions
- What is Jonathan Williams's NPI number?
- Jonathan Williams's National Provider Identifier (NPI) is 1700306867, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Williams's specialty?
- Jonathan Williams is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Williams located?
- Jonathan Williams's practice location on file with NPPES is 20 Progress Point Pkwy Ste 200, O Fallon, MO 63368-2207.
- What is Jonathan Williams's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Williams is (636) 916-7060.
- Does Jonathan Williams accept Medicare?
- Jonathan Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Williams's NPI active?
- Yes — Jonathan Williams's NPI (1700306867) is active in the NPPES registry as of the last update on 2026-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.