Kathryn M. Ziegler, MD

Medicare activity in 2024

Official CMS public-use data for Kathryn M. Ziegler, 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.

Most frequent services

1. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)24 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)16 services
3. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)11 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 cholesterol74%
• High blood pressure72%
• Arthritis55%
• Depression41%
• Ischemic heart disease33%
• Anxiety33%

Hospitals where Kathryn M. Ziegler works

Medicare's Facility Affiliation Data lists Kathryn M. Ziegler 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.

• Beaumont Hospital - Farmington HillsFarmington Hills, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230151
• Beaumont Hospital Royal OakRoyal Oak, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230130
• Beaumont Hospital, TroyTroy, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230269

Practice locations

Addresses where Kathryn M. Ziegler is enrolled with Medicare (CMS data updated October 2, 2026).

• 3535 W 13 Mile RdRoyal Oak, MI 48073 (248) 551‑8180

Group practices

Medicare enrollment lists Kathryn M. Ziegler as a member of this group (CMS data updated October 2, 2026).

• Royal Oak Surgical Associates PC4 clinicians in the group

Specialties

• General Surgeryprimary

Find other General Surgery doctors in Michigan →

Other general surgeons in Royal Oak

Clinicians with the same Medicare primary specialty in Royal Oak, MI — not a recommendation.

• Sapna Nagar, MD
• Alexander M. Demare, MD
• Pamela R. Benitez, MD
• Vandad Raofi, MD
• Kevin C. Janek, MD
• Sean E. Masters, MD
• Peter F. Czako, MD
• Lavanya Yohanathan, MD

All general surgeons in Royal Oak →

Other clinicians in Royal Oak Surgical Associates PC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Sapna Nagar, MD
• Peter F. Czako, MD
• Kevin R. Krause, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians