Quick answers
- Does Timothy R. Soncasie accept Medicare assignment?
- Yes. Medicare's clinician data says Timothy R. Soncasie 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 Timothy R. Soncasie see?
- In 2024, CMS data shows 410 Original Medicare patients and 1,034 services for Timothy R. Soncasie. This counts Original Medicare only and measures volume, not quality.
- What is Timothy R. Soncasie's NPI number?
- 1225058308. 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 Timothy R. Soncasie, 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 | 410 |
|---|---|
| Services billed to Medicare | 1,034 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)350 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)198 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)191 services
- Influenza vaccine split virus, preservative free (90662)48 services
- Administration of influenza virus vaccine (G0008)48 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%
- Arthritis48%
- Ischemic heart disease27%
- Diabetes24%
- Depression24%
Hospitals where Timothy R. Soncasie works
Medicare's Facility Affiliation Data lists Timothy R. Soncasie 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.
- Boone Hospital CenterColumbia, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260068
- St Lukes HospitalChesterfield, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260179
Practice locations
Addresses where Timothy R. Soncasie is enrolled with Medicare (CMS data updated October 2, 2026).
- 11550 Olive BlvdSaint Louis, MO 63141 (314) 542‑7690
- 232 S Woods Mell RdChesterfield, MO 63017
- 233 Clarkson RdEllisville, MO 63011 (636) 256‑8644
- 8857 Ladue Rd ASaint Louis, MO 63124 (314) 576‑8189
- 900 W Nifong Blvd, Suite 101Columbia, MO 65203 (573) 815‑6640
Group practices
Medicare enrollment lists Timothy R. Soncasie as a member of these groups (CMS data updated October 2, 2026).
- Boone Physician Services LLC250 clinicians in the group
- Emergency Physicians of St Lukes LLC61 clinicians in the group
Specialties
- Internal Medicineprimary
- Pediatric Medicinealso
Other internal medicine doctors in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Other clinicians in Boone Physician Services LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 1991 (35 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1225058308 |
| 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