Michael Xiaozhong Liu, 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.

• Alton Memorial Hospital Hospital · Alton, IL
• Barnes Jewish Hospital Hospital · Saint Louis, MO
• Christian Hospital Northeast Hospital · Saint Louis, MO
• Memorial Hospital Hospital · Belleville, IL

Colleagues at Fairview Heights Medical Group SC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 448 clinicians in the practice; 12 are shown here.

• Dr. Mohammed Ismail Al Hamati, MD Internal Medicine Physician · Belleville, IL
• Catherine Louise Ash, MD Internal Medicine Physician · Edwardsville, IL
• Dr. Kathryn Lorann Davis, MD Vascular Surgery Physician · Charlotte, NC
• Robert J Dizes Jr., PA-C Physician Assistant · Shiloh, IL
• Douglas Dothager, MD Pulmonary Disease Physician · Belleville, IL
• Stephanie Lynn Haynes, APRN, FNP-C Nurse Practitioner · Belleville, IL
• Donna L Koenig, FNP Nurse Practitioner · Godfrey, IL
• Ashley N Mehochko, MSN, APRN, FNP-BC Nurse Practitioner · Shiloh, IL
• Dr. Balaji Shanmugam, MD Interventional Cardiology Physician · Lake Mary, FL
• John W Stirton, MD Orthopaedic Surgery Physician · Alton, IL
• Poonam Velagapudi, MD Interventional Cardiology Physician · Omaha, NE
• Melissa Whitworth, FNP Nurse Practitioner · Belleville, IL

Other providers in Alton

• Illinois Institute of Neurology Ltd

  Organization Neurology Physician · NPI 1467469007

  2 Memorial Dr Ste 201, Alton, IL 62002-6723 · (314) 355-3355

• Ajitesh Rai, MD

  Individual Neurology Physician · NPI 1205883097

  4 Memorial Dr Ste 230, Alton, IL 62002-6751 · (618) 465-8666

• Mohammad Sajed, MD

  Individual Neurology Physician · NPI 1396785127

  4 Memorial Dr Ste 230, Alton, IL 62002-6704 · (618) 465-8666

• Karna D Sherwood, MD

  Individual Neurology Physician · NPI 1619105293

  2 Saint Anthonys Way Ste 300, Alton, IL 62002-4569 · (618) 463-0227

• Arbha Vongsvivut, MD

  Individual Neurology Physician · NPI 1639206154

  815 E 5th St Ste 101, Alton, IL 62002 · (618) 462-0547