Quick answers
- Does Kathryn H. Gillen accept Medicare assignment?
- Yes. Medicare's clinician data says Kathryn H. Gillen 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 Kathryn H. Gillen see?
- In 2024, CMS data shows 176 Original Medicare patients and 601 services for Kathryn H. Gillen. This counts Original Medicare only and measures volume, not quality.
- What is Kathryn H. Gillen's NPI number?
- 1356635007. 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 Kathryn H. Gillen, 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 | 176 |
|---|---|
| Services billed to Medicare | 601 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Critical care, first 30-74 minutes (99291)84 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)81 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)67 services
- Test to examine how well the lungs exchange gases (94729)51 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)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 pressure73%
- High cholesterol69%
- Arthritis49%
- COPD44%
- Ischemic heart disease35%
- Chronic kidney disease35%
Hospitals where Kathryn H. Gillen works
Medicare's Facility Affiliation Data lists Kathryn H. Gillen 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.
- Amery Hospital & ClinicAmery, WI · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 521308
- Hudson HospitalHudson, WI · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 521335
- Lakeview Memorial HospitalStillwater, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240066
- Regions HospitalSaint Paul, MN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 240106
- Westfields Hospital and ClinicNew Richmond, WI · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 521345
Practice locations
Addresses where Kathryn H. Gillen is enrolled with Medicare (CMS data updated October 2, 2026).
- 1500 Curve Crest W BlvdStillwater, MN 55082 (651) 439‑1234
- 401 Phalen BlvdSaint Paul, MN 55130 (651) 254‑7400
Group practices
Medicare enrollment lists Kathryn H. Gillen as a member of this group (CMS data updated October 2, 2026).
- Group Health Inc1,638 clinicians in the group
Specialties
Other internal medicine doctors in Stillwater
Clinicians with the same Medicare primary specialty in Stillwater, MN — not a recommendation.
Other clinicians in Group Health Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1356635007 |
| 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