Quick answers
- Does Andrey Vavrenyuk accept Medicare assignment?
- Yes. Medicare's clinician data says Andrey Vavrenyuk 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 Andrey Vavrenyuk see?
- In 2024, CMS data shows 258 Original Medicare patients and 798 services for Andrey Vavrenyuk. This counts Original Medicare only and measures volume, not quality.
- What is Andrey Vavrenyuk's NPI number?
- 1093211195. 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 Andrey Vavrenyuk, 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 | 258 |
|---|---|
| Services billed to Medicare | 798 |
| Different services or procedures | 45 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)117 services
- Home dialysis services per month (20 years or older) (90966)101 services
- Insertion of needle into vein for collection of blood sample (36415)62 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)56 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)50 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%
- Chronic kidney disease75%
- High cholesterol74%
- Diabetes57%
- Heart failure55%
- Ischemic heart disease49%
Hospitals where Andrey Vavrenyuk works
Medicare's Facility Affiliation Data lists Andrey Vavrenyuk 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.
- Fort Memorial HospitalFort Atkinson, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520071
- Richland HospitalRichland Center, WI · Critical Access Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 521341
- UnityPoint Health - MeriterMadison, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520089
- University of WI Hospitals & Clinics AuthorityMadison, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520098
- UW HealthRockford, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140228
Practice locations
Addresses where Andrey Vavrenyuk is enrolled with Medicare (CMS data updated October 2, 2026).
- 3034 Fish Hatchery RdFitchburg, WI 53713 (800) 881‑5101
- 600 Highland AveMadison, WI 53792 (608) 263‑6400
Group practices
Medicare enrollment lists Andrey Vavrenyuk as a member of this group (CMS data updated October 2, 2026).
- University of Wisconsin Medical Foundation Inc2,553 clinicians in the group
Specialties
- Nephrologyprimary
Other nephrologists in Fitchburg
Clinicians with the same Medicare primary specialty in Fitchburg, WI — not a recommendation.
Other clinicians in University of Wisconsin Medical Foundation Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2015 (11 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) | 1093211195 |
| 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