Cameron Koester, DO

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.

• Barnes Jewish Hospital Hospital · Saint Louis, MO
• Barnes-Jewish St Peters Hospital Hospital · Saint Peters, MO · listed as Barnes Jewish St Peters Hospital
• Missouri Baptist Medical Center Hospital · Saint Louis, MO
• Progress West Hospital Hospital · Ofallon, MO
• Ssm St Joseph Hospital West Hospital · Lake Saint Louis, MO

Colleagues at Physician Groups Lc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 524 clinicians in the practice; 12 are shown here.

• Bazgha Ahmad Internal Medicine Physician · Saint Louis, MO
• Dr. David J Brown, MD Internal Medicine Physician · Saint Louis, MO
• Abigail Thuet Chitwood, MD Obstetrics & Gynecology Physician · Saint Louis, MO
• Gary David Koenig, MD Gastroenterology Physician · Hazelwood, MO
• Adam Madej, DO Internal Medicine Physician · Saint Louis, MO
• Kristina Lynn Mulder, MSN, APRN, AGPCNP Primary Care Nurse Practitioner · Festus, MO
• Khalid Naseer, MD Gastroenterology Physician · Alton, IL
• Dr. Aaron L Tang, MD Internal Medicine Physician · Saint Peters, MO
• Dr. Nicholas Peter Taraska, MD Nephrology Physician · Saint Louis, MO
• Mrs. Rachel Nicole Tinker, AGACNP-BC Acute Care Nurse Practitioner · Saint Peters, MO
• Sara B Tucker, ANP Adult Health Nurse Practitioner · O Fallon, MO
• Ngozidilenna Ada Wilkins, MD, MPH Family Medicine Physician · Saint Peters, MO

Other providers in Saint Peters

• Dr. Martin B Ast, MD

  Individual Cardiovascular Disease Physician · NPI 1679515415

  10 Hospital Dr Ste 100, Saint Peters, MO 63376-1659 · (636) 916-7272

• Dr. Marc K Lewen, DO

  Individual Cardiovascular Disease Physician · NPI 1174565915

  10 Hospital Dr Ste 100, Saint Peters, MO 63376-1659 · (636) 916-7272

• Dr. Timothy J Martin, MD

  Individual Cardiovascular Disease Physician · NPI 1366486722

  10 Hospital Dr Ste 100, Saint Peters, MO 63376-1659 · (636) 916-7272

• Dr. Michael A Missler, DO

  Individual Cardiovascular Disease Physician · NPI 1417999467

  10 Hospital Dr Ste 100, Saint Peters, MO 63376-1659 · (636) 916-7272

• Ripa K Patel, MD

  Individual Cardiovascular Disease Physician · NPI 1811372980

  10 Hospital Dr Ste 100, Saint Peters, MO 63376-1659 · (636) 916-7272