Quick answers
- Does Andrew M. Ertl accept Medicare assignment?
- Yes. Medicare's clinician data says Andrew M. Ertl 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 Andrew M. Ertl see?
- In 2024, CMS data shows 416 Original Medicare patients and 1,821 services for Andrew M. Ertl. This counts Original Medicare only and measures volume, not quality.
- What is Andrew M. Ertl's NPI number?
- 1679894943. 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 Andrew M. Ertl, 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 | 416 |
|---|---|
| Services billed to Medicare | 1,821 |
| Different services or procedures | 93 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- X-ray of ankle, minimum of 3 views (73610)195 services
- X-ray of knee, 3 views (73562)155 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)155 services
- X-ray of foot, minimum of 3 views (73630)134 services
- X-ray of foot, 2 views (73620)126 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).
- Arthritis71%
- High blood pressure67%
- High cholesterol63%
- Anxiety18%
- Diabetes17%
- Depression17%
Hospitals where Andrew M. Ertl works
Medicare's Facility Affiliation Data lists Andrew M. Ertl 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.
- Aspirus Divine Savior HospitalPortage, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520041
- Richland HospitalRichland Center, WI · Critical Access Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 521341
- Sauk Prairie HospitalPrairie Du Sac, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520095
- The Monroe ClinicMonroe, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520028
- University of WI Hospitals & Clinics AuthorityMadison, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520098
Practice locations
Addresses where Andrew M. Ertl is enrolled with Medicare (CMS data updated October 2, 2026).
- 260 26th StPrairie Du Sac, WI 53578 (608) 643‑3311
Group practices
Medicare enrollment lists Andrew M. Ertl as a member of this group (CMS data updated October 2, 2026).
- Sauk Prairie Healthcare Inc124 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Prairie Du Sac
Clinicians with the same Medicare primary specialty in Prairie Du Sac, WI — not a recommendation.
Other clinicians in Sauk Prairie Healthcare Inc
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 | 2010 (16 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1679894943 |
| 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