Quick answers
- Does Jeffrey P. Michalak accept Medicare assignment?
- Yes. Medicare's clinician data says Jeffrey P. Michalak 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 P. Michalak see?
- In 2024, CMS data shows 753 Original Medicare patients and 1,296 services for Jeffrey P. Michalak. This counts Original Medicare only and measures volume, not quality.
- What is Jeffrey P. Michalak's NPI number?
- 1962622431. 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 P. Michalak, 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 | 753 |
|---|---|
| Services billed to Medicare | 1,296 |
| Different services or procedures | 37 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)282 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)227 services
- Biopsy of large bowel using a flexible endoscope (45380)214 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)153 services
- Colorectal cancer screening; colonoscopy on individual at high risk (G0105)107 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 cholesterol75%
- High blood pressure72%
- Arthritis42%
- Anxiety26%
- Diabetes25%
- Depression25%
Hospitals where Jeffrey P. Michalak works
Medicare's Facility Affiliation Data lists Jeffrey P. Michalak 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.
- Buena Vista Regional Medical CenterStorm Lake, IA · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 161375
- Burgess Health CenterOnawa, IA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 161359
- Dunes Surgical HospitalDakota Dunes, SD · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 430089
- Floyd Valley HealthcareLe Mars, IA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 161368
- St Lukes Regional Medical CenterSioux City, IA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 160146
Practice locations
Addresses where Jeffrey P. Michalak is enrolled with Medicare (CMS data updated October 2, 2026).
- 2735 Outer Dr N, Cnos NorthsideSioux City, IA 51104 (712) 224‑5692
- 575 N Sioux Point RdDakota Dunes, SD 57049 (605) 217‑2667
- 600 N Sioux Point RdDakota Dunes, SD 57049 (605) 232‑3332
- 705 N Sioux Point Rd, Suite 100Dakota Dunes, SD 57049 (605) 217‑2667
- 801 5th StSioux City, IA 51101 (712) 279‑2010
Group practices
Medicare enrollment lists Jeffrey P. Michalak as a member of this group (CMS data updated October 2, 2026).
- Cnos PC99 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Iowa
Clinicians with the same Medicare primary specialty in Iowa — not a recommendation.
Other clinicians in Cnos PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Kansas City University Of Med & Biosciences, College Of Osteo Med |
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1962622431 |
| 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