Doctor profile · Federal record

Dr. Michael Williams, D.O.

Family Medicine Physician · Family Medicine Physician · O'Fallon, MO

  • NPI 1851353247
  • 20 yrs on file
  • Licensed in 2 states
  • Male
  • Solo practice
  • No sanctions

Practice & contact

Operates at 3 locations .

NPPES Updated May 11, 2026
Primary practice
Ultra Wellness Medical, LLC, 3026 Winghaven Blvd.
O'Fallon, MO 63368
(636) 333-9820
fax (636) 228-0039
Additional location
400 Medical Plz Ste 200
Lake St Louis, MO 633671417
(636) 625-2662
Additional location
7421 Highway N
Dardenne Prairie, MO 633687014
(636) 561-5699
fax (636) 669-2401
Mailing address
3026 Winghaven Blvd.
O'Fallon, MO 63368

Credentials & registration

NPPES · NUCC
NPI registered
April 2006 — 20 yrs on file
Profile last updated
September 23, 2022
Specialty taxonomy
207Q00000X — NUCC code
State licenses (2)
Illinois #2005036219 · California #20A18065
Medicaid
MO #200202505

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1851353247. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$112
Transactions
6
Manufacturers
3
Payer (manufacturer) Industry Txns Amount
Astellas Pharma US INC 4 $81.40
Alexion Pharmaceuticals, INC. 1 $16.11
Antares Pharma, INC. 1 $14.35

By nature of payment

Food and Beverage
$112

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
50
Patients
0
Total drug cost
$25,261
Drug Type Claims Patients Total cost
Ozempic (Semaglutide) Brand 22 0 $24,264
Progesterone (Progesterone, Micronized) Brand 15 0 $743
Tramadol Hcl-Acetaminophen (Tramadol Hcl/Acetaminophen) Brand 13 0 $254

Frequently asked questions

Auto-generated from federal data
What is Dr. Michael Williams's medical specialty?
Dr. Michael Williams practices Family Medicine Physician in O'Fallon, MO.
Where does Dr. Michael Williams practice?
Dr. Michael Williams practices at Ultra Wellness Medical, LLC, O'Fallon, MO 63368. Office phone: 6363339820.
What is Dr. Michael Williams's NPI?
Dr. Michael Williams's National Provider Identifier (NPI) is 1851353247, issued by NPPES.

Methodology · sources used on this page

All figures on this page come from publicly available federal datasets. We do not edit, score, or summarise the underlying data. Profile generated Jun 17, 2026.

NPPES Provider identifiers and practice info May 11, 2026
Open Payments Industry payments to providers (Sunshine Act) May 11, 2026
Medicare Procedure Utilization Services and allowed amounts by HCPCS May 11, 2026
Medicare Part D Prescription drug claims May 11, 2026
CMS MIPS Quality performance scores May 11, 2026
OIG LEIE Federal exclusion / sanctions list May 11, 2026

Information based on publicly available federal data. Not medical advice. Report incorrect data ›