Quick answers
- Does Richard J. Kozeny Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Richard J. Kozeny Jr. 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 Richard J. Kozeny Jr. see?
- In 2024, CMS data shows 502 Original Medicare patients and 1,561 services for Richard J. Kozeny Jr.. This counts Original Medicare only and measures volume, not quality.
- What is Richard J. Kozeny Jr.'s NPI number?
- 1255319810. 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 Richard J. Kozeny Jr., 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 | 502 |
|---|---|
| Services billed to Medicare | 1,561 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)679 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)498 services
- Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use (90677)105 services
- Administration of pneumococcal vaccine (G0009)105 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)47 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%
- Arthritis47%
- Ischemic heart disease27%
- Diabetes25%
- Anxiety22%
Hospitals where Richard J. Kozeny Jr. works
Medicare's Facility Affiliation Data lists Richard J. Kozeny Jr. 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.
- Barnes Jewish HospitalSaint Louis, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260032
- Barnes-Jewish West County HospitalCreve Coeur, MO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 260162
- Mercy Hospital St LouisSaint Louis, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260020
- SSM St Clare Health CenterFenton, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260081
- St Lukes HospitalChesterfield, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260179
Practice locations
Addresses where Richard J. Kozeny Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 226 S Woods Mill Rd, Suite 43wChesterfield, MO 63017 (314) 205‑6444
- 7212 Balson AveSaint Louis, MO 63130
- 9594 Manchester RdSaint Louis, MO 63119 (314) 274‑6314
Group practices
Medicare enrollment lists Richard J. Kozeny Jr. as a member of these groups (CMS data updated October 2, 2026).
- Aging Well Health Care, LLC238 clinicians in the group
- Arnold Physical Therapy and Sports Medicine LLC83 clinicians in the group
- Chesterfield Internal Medicine and Rheumatology, LLC8 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Chesterfield
Clinicians with the same Medicare primary specialty in Chesterfield, MO — not a recommendation.
Other clinicians in Aging Well Health Care, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1255319810 |
| 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