Quick answers
- Does Gabriel P. Desimon accept Medicare assignment?
- Yes. Medicare's clinician data says Gabriel P. Desimon accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Gabriel P. Desimon see?
- In 2024, CMS data shows 1,693 Original Medicare patients and 2,178 services for Gabriel P. Desimon. This counts Original Medicare only and measures volume, not quality.
- What is Gabriel P. Desimon's NPI number?
- 1871526863. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Gabriel P. Desimon, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 1,693 |
|---|---|
| Services billed to Medicare | 2,178 |
| Different services or procedures | 117 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- X-ray of chest, 1 view (71045)268 services
- X-ray of chest, 2 views (71046)205 services
- Ct scan of chest without contrast (71250)126 services
- Ct scan of abdomen and pelvis with contrast (74177)105 services
- Limited ultrasound scan of abdomen (76705)97 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Ischemic heart disease39%
- Chronic kidney disease32%
- Diabetes31%
Hospitals where Gabriel P. Desimon works
Medicare's Facility Affiliation Data lists Gabriel P. Desimon at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- St Lukes HospitalChesterfield, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260179
Practice locations
Addresses where Gabriel P. Desimon is enrolled with Medicare (CMS data updated October 2, 2026).
- 19 Clarkson RdEllisville, MO 63011 (636) 733‑8989
- 232 S Woods Mill RdChesterfield, MO 63017 (314) 434‑1500
- 6 McBride and Son Corp Ctr Dr, Suite 101Chesterfield, MO 63005 (636) 519‑7865
Group practices
Medicare enrollment lists Gabriel P. Desimon as a member of these groups (CMS data updated October 2, 2026).
- Physician Specialists of St Lukes LLC82 clinicians in the group
- Diagnostic Imaging Associates Ltd19 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Ellisville
Clinicians with the same Medicare primary specialty in Ellisville, MO — not a recommendation.
Other clinicians in Physician Specialists of St Lukes LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1987 (39 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871526863 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians