Quick answers
- Does Maria D. Andres accept Medicare assignment?
- Yes. Medicare's clinician data says Maria D. Andres 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 Maria D. Andres see?
- In 2024, CMS data shows 139 Original Medicare patients and 1,298 services for Maria D. Andres. This counts Original Medicare only and measures volume, not quality.
- What is Maria D. Andres's NPI number?
- 1841398435. 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 Maria D. Andres, 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 | 139 |
|---|---|
| Services billed to Medicare | 1,298 |
| Different services or procedures | 83 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)167 services
- Blood test, comprehensive group of blood chemicals (80053)100 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)94 services
- Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)93 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)84 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 pressure56%
- High cholesterol43%
- Diabetes29%
- Arthritis27%
- Ischemic heart disease12%
- Depression12%
Hospitals where Maria D. Andres works
Medicare's Facility Affiliation Data lists Maria D. Andres 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.
- Sauk Prairie HospitalPrairie Du Sac, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520095
- 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 Maria D. Andres is enrolled with Medicare (CMS data updated October 2, 2026).
- 112 Helen StSauk City, WI 53583 (608) 643‑3351
- 260 26th StPrairie Du Sac, WI 53578
Group practices
Medicare enrollment lists Maria D. Andres as a member of this group (CMS data updated October 2, 2026).
- Sauk Prairie Healthcare Inc124 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Sauk City
Clinicians with the same Medicare primary specialty in Sauk City, 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 | PA |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841398435 |
| 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