Quick answers
- Does Marie A. Guanzon accept Medicare assignment?
- Yes. Medicare's clinician data says Marie A. Guanzon 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 Marie A. Guanzon see?
- In 2024, CMS data shows 394 Original Medicare patients and 1,342 services for Marie A. Guanzon. This counts Original Medicare only and measures volume, not quality.
- What is Marie A. Guanzon's NPI number?
- 1780664631. 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 Marie A. Guanzon, 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 | 394 |
|---|---|
| Services billed to Medicare | 1,342 |
| Different services or procedures | 54 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)372 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)191 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)155 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)92 services
- X-ray of chest, 2 views (71046)66 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%
- Arthritis49%
- Chronic kidney disease35%
- Diabetes32%
- Anxiety31%
Hospitals where Marie A. Guanzon works
Medicare's Facility Affiliation Data lists Marie A. Guanzon 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.
- CentraCare - St. Cloud HospitalSaint Cloud, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240036
- CentraCare Health - MonticelloMonticello, MN · Critical Access Hospital · Emergency services: listed by Medicare · CCN 241362
Practice locations
Addresses where Marie A. Guanzon is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 10; the Medicare profile lists all.
- 101 Willmar Ave SWWillmar, MN 56201 (320) 231‑5000
- 101 Willmar Ave SW, Affiliated Community Medical CenterWillmar, MN 56201 (320) 231‑5000
- 1200 6th Ave NSaint Cloud, MN 56303
- 1200 6th Ave NSt Cloud, MN 56303 (320) 252‑5131
- 1200 6th Ave N, Centracare Clic River CampusSaint Cloud, MN 56303 (320) 252‑5131
Group practices
Medicare enrollment lists Marie A. Guanzon as a member of this group (CMS data updated October 2, 2026).
- CentraCare Clinic791 clinicians in the group
Specialties
- Internal Medicineprimary
- Allergy/Immunologyalso
Other internal medicine doctors in Willmar
Clinicians with the same Medicare primary specialty in Willmar, MN — not a recommendation.
Other clinicians in CentraCare Clinic
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1780664631 |
| 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