Quick answers
- Does Leonard P. Zimnowski accept Medicare assignment?
- Yes. Medicare's clinician data says Leonard P. Zimnowski 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 Leonard P. Zimnowski see?
- In 2024, CMS data shows 64 Original Medicare patients and 213 services for Leonard P. Zimnowski. This counts Original Medicare only and measures volume, not quality.
- What is Leonard P. Zimnowski's NPI number?
- 1821099268. 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 Leonard P. Zimnowski, 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 | 64 |
|---|---|
| Services billed to Medicare | 213 |
| Different services or procedures | 27 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)30 services
- Placement of stabilizing device to front, 2-3 spine bone segments (22845)22 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)14 services
- Fusion of lower spine bone through abdomen with partial removal of disc (22558)12 services
- Fusion of spine in lower back (22612)12 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%
- Diabetes38%
- Ischemic heart disease23%
- Anxiety23%
Hospitals where Leonard P. Zimnowski works
Medicare's Facility Affiliation Data lists Leonard P. Zimnowski 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.
- Crestwood Medical CenterHuntsville, AL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 010131
Practice locations
Addresses where Leonard P. Zimnowski is enrolled with Medicare (CMS data updated October 2, 2026).
- 4715 Whitesburg Dr SHuntsville, AL 35802
- 4715 Whitesburg Dr SEHuntsville, AL 35802 (256) 881‑5151
Group practices
Medicare enrollment lists Leonard P. Zimnowski as a member of this group (CMS data updated October 2, 2026).
- Sportsmed Orthopaedic Specialists86 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Huntsville
Clinicians with the same Medicare primary specialty in Huntsville, AL — not a recommendation.
Other clinicians in Sportsmed Orthopaedic Specialists
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821099268 |
| 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