Dr. Christopher M. Nguyen, DO
Gastroenterology (Gastroenterology Physician)
17298 N Outer 40 Rd Ste 200
Chesterfield, MO 63005
Who else practices at this address →
St. Louis County includes dental (1% of residents) shortage areas. About shortage areas
At a glance
- Medical school
- University of North Texas Hsc, College of Osteopathic Med (2019)
- Years since graduation
- 7
- In the NPI registry since
- 2019
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. What an NPI is
Education and training
- 2019Medical school: University of North Texas Hsc, College of Osteopathic Med
- 2019Registered with an NPI (national billing number; not a license date)
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
-
Gastroenterology Physician primary
MO license 2023019628
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- St Lukes Hospital Chesterfield, MO
- Ssm Health Saint Louis University Hospital Saint Louis, MO
Medical groups
- Ssm Health Care Group (940 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
| Service | Times | Patients |
|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 67 | 17 |
| Established patient office or other outpatient visit, 30-39 minutes | 22 | 19 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 17 | 17 |
| Hospital discharge day management, 30 minutes or less | 16 | 16 |
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.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Omeprazole Other prescribers in Chesterfield, MO | 52 |
| Pantoprazole Sodium Other prescribers in Chesterfield, MO | 38 |
| Famotidine Other prescribers in Chesterfield, MO | 33 |
| Ondansetron Odt (ondansetron) Other prescribers in Chesterfield, MO | 16 |
| Esomeprazole Magnesium Other prescribers in Chesterfield, MO | 13 |
| Metoclopramide Hcl Other prescribers in Chesterfield, MO | 13 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 3 companies reported 3 payments worth $231 in total to this clinician.
| Madrigal Pharmaceuticals | $99.75 |
|---|---|
| Cook Medical LLC | $90.45 |
| Octapharma USA, Inc. | $40.89 |
| Food and Beverage | $231 |
|---|
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.