Quick answers
- Does Jeffrey K. Jenks accept Medicare assignment?
- Yes. Medicare's clinician data says Jeffrey K. Jenks 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 Jeffrey K. Jenks see?
- In 2024, CMS data shows 152 Original Medicare patients and 4,507 services for Jeffrey K. Jenks. This counts Original Medicare only and measures volume, not quality.
- What is Jeffrey K. Jenks's NPI number?
- 1154618858. 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 Jeffrey K. Jenks, 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 | 152 |
|---|---|
| Services billed to Medicare | 4,507 |
| Different services or procedures | 59 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Injection, methylprednisolone acetate, 1 mg (J1010)3,980 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)117 services
- Aspiration and/or injection of fluid from large joint (20610)72 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)36 services
- X-ray of knee, 4 or more views (73564)26 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%
- Arthritis75%
- Ischemic heart disease41%
- Depression38%
- Anxiety37%
Hospitals where Jeffrey K. Jenks works
Medicare's Facility Affiliation Data lists Jeffrey K. Jenks 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.
- Mercy Hospital JeffersonCrystal City, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260023
- Parkland Health CenterFarmington, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260163
- SSM St Joseph Health CenterSaint Charles, MO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 260005
- SSM St Joseph Hospital WestLake Saint Louis, MO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 260200
Practice locations
Addresses where Jeffrey K. Jenks is enrolled with Medicare (CMS data updated October 2, 2026).
- 1390 US Hwy 61, Suite N1500Festus, MO 63028
- 400 1st Capitol Dr, Suite 100Saint Charles, MO 63301 (636) 669‑0300
- 621 S New Ballas Rd, Suite 3005bSaint Louis, MO 63141 (314) 567‑5850
- 851 E 5th St, Suite 108Washington, MO 63090 (636) 861‑7870
Group practices
Medicare enrollment lists Jeffrey K. Jenks as a member of these groups (CMS data updated October 2, 2026).
- SSM Medical Group Inc568 clinicians in the group
- Mercy Clinic Surgical Specialists LLC182 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Missouri
Clinicians with the same Medicare primary specialty in Missouri — not a recommendation.
Other clinicians in SSM Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2011 (15 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1154618858 |
| 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