There are 4 Gastroenterology clinicians in Saint Charles, MO in Medicare’s data, ranked by the number of Medicare services they provide.
Gastroenterology clinicians in Saint Charles
| Clinician | Experience | Telehealth | Medicare patients | Assignment |
|---|---|---|---|---|
| Marin Marcu, M.D. | 40 yrs | — | 433 | Accepts |
| Lawrence Tierney, M.D. | — | — | 315 | Accepts |
| Hari Diwakaran, M.D. | 39 yrs | — | 295 | Accepts |
| David Westrich, MD | 10 yrs | — | 273 | Accepts |
What the columns mean
- Experience — years since the clinician’s medical-school graduation (when known).
- Telehealth — the clinician reported providing telehealth (video/phone) visits.
- Medicare patients — distinct Original-Medicare beneficiaries in the latest year; a volume signal, not a quality rating.
- Assignment — “Accepts” means they accept the Medicare-approved amount as full payment (lower out-of-pocket for Medicare patients).
Compare hospital prices in Saint Charles → · All Gastroenterology cities →
Source: CMS Medicare Physician & Other Practitioners and the Doctors & Clinicians National Downloadable File (most recent release). Counts reflect Original Medicare activity only and are not a measure of quality. “Medicare allows” is the Medicare fee schedule amount — not what an insured or cash patient pays; for patient prices see the linked procedure pages. Always confirm a clinician’s current details with their office.