Dr. Michael O. Johnson, M.D.
Critical Care Medicine (Critical Care Medicine (Internal Medicine) Physician)
300 1st Capitol Dr
Saint Charles, MO 63301
Who else practices at this address →
St. Charles County is a federal mental health shortage area; it also includes dental (16% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 21
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Critical Care Medicine (Internal Medicine) Physician primary
MO license R7N07
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Medicare patients and services
- Medicare patients, 2024
- 21
- Services billed
- 26
- Patients’ average age
- 68
| Service | Times | Patients |
|---|---|---|
| Critical care, first 30-74 minutes | 84 | 52 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Payments from drug and device companies
In 2025, 1 companies reported 2 payments worth $241 in total to this clinician.
| Boston Scientific Corporation | $241 |
|---|
| Food and Beverage | $241 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.