Winnie Yiyun Zou, MD

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

• University Of Michigan Health System Hospital · Ann Arbor, MI

Colleagues at Regents of the University of Michigan

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3271 clinicians in the practice; 12 are shown here.

• Heather Elise Acuff, MD Anesthesiology Physician · Ann Arbor, MI
• Cory Max Caincross Certified Registered Nurse Anesthetist · Jackson, MI
• Heather Marie Fox, PA Physician Assistant · Ann Arbor, MI
• Dr. Kimberly Hamilton, MD Internal Medicine Physician · Ann Arbor, MI
• Sydney Liedel Hattie, NP Family Nurse Practitioner · Dexter, MI
• Robert Curtis Hyzy, MD Critical Care Medicine (Internal Medicine) Physician · Ann Arbor, MI
• Kim Ann Kramer, PA-C Physician Assistant · Ann Arbor, MI
• Jill Alina Lancaster, MD Pediatrics Physician · Northville, MI
• Jennifer Michelle Otersen, CRNA Specialist · Ann Arbor, MI
• Angela Marie Rose, PAC Physician Assistant · Ann Arbor, MI
• Amanda Rachel Savoie, NP Acute Care Nurse Practitioner · Ann Arbor, MI
• Kimberly A Vnuk-Kronick, CRNA Certified Registered Nurse Anesthetist · Ann Arbor, MI

Other providers in Ann Arbor

• Jialong Zhen

  Individual Student in an Organized Health Care Education/Training Program · NPI 1568393288

  Student / training record Ann Arbor, MI

• Isabel Zheng

  Individual Student in an Organized Health Care Education/Training Program · NPI 1699525659

  Student / training record Ann Arbor, MI

• Anny Zhong

  Individual Student in an Organized Health Care Education/Training Program · NPI 1972391159

  Student / training record Ann Arbor, MI

• Madison Ziga, PA-S

  Individual Student in an Organized Health Care Education/Training Program · NPI 1962352161

  Student / training record Ann Arbor, MI

• Dr. Muhammad Mujeeb Zubair, MD

  Individual Student in an Organized Health Care Education/Training Program · NPI 1518378249

  Student / training record Ann Arbor, MI

• Caroline Zubieta, MD

  Individual Student in an Organized Health Care Education/Training Program · NPI 1902649338

  Student / training record Ann Arbor, MI

• John Zunker, MD

  Individual Student in an Organized Health Care Education/Training Program · NPI 1992548325

  Student / training record Ann Arbor, MI