Mathew Chung, MD

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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. Those with a page here are linked.

• Spectrum Health Hospital · Grand Rapids, MI · listed as Spectrum Health Hospital
• Corewell Health Visiting Nurse Association Home health agency · Grand Rapids, MI

Colleagues at Spectrum Health Primary Care Partners

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2303 clinicians in the practice; 12 are shown here.

• Patrick Ray Brown, DO Internal Medicine Physician · Grand Rapids, MI
• Dr. Jennifer Christine Curtis, DO Pediatrics Physician · Grand Rapids, MI
• Jaida Celeste Fitzgerald, MD Anesthesiology Physician · Grand Rapids, MI
• Dr. Rami Baseem Kassis, DO Internal Medicine Physician · Grand Rapids, MI
• Yenabi Joseph Keflemariam, MD Anesthesiology Physician · Arlington Heights, IL
• Dr. Arashdeep Kaur Litt, MD Internal Medicine Physician · Grand Rapids, MI
• Paul Alex Mazaris, MD Neurological Surgery Physician · Grand Rapids, MI
• William M Merhi, DO Internal Medicine Physician · Grand Rapids, MI
• Matthew Moeller, MD Gastroenterology Physician · Grand Rapids, MI
• Rachel Ann Rogers, PA Physician Assistant · Grand Rapids, MI
• Arida Siripong, MD Surgery Physician · Grand Rapids, MI
• Dr. David A Zink, MD Gastroenterology Physician · Holland, MI

Other providers in Grand Rapids

• Academic Surgical Associates, PLLC

  Organization Surgical Oncology Physician · NPI 1114139045

  1000 E Paris Ave SE Ste 150, Grand Rapids, MI 49546-3691 · (616) 977-6243

• Michigan Medical Patient Care

  Organization Surgical Oncology Physician · NPI 1376707158

  145 Michigan Ave NE, Grand Rapids, MI 49503 · (616) 974-4889