Dr. Nathan Alan Aardsma, 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.

• Franciscan Health Dyer Hospital · Dyer, IN · listed as Franciscan Health Dyer & Hammond
• Franciscan Health Lafayette Hospital · Lafayette, IN
• Franciscan Health Michigan City Hospital · Michigan City, IN
• Franciscan Health Munster Hospital · Munster, IN
• Franciscan Health Olympia & Chicago Heights Hospital · Olympia Fields, IL · listed as Franciscan Health Olympia Fields & Chicago Heights

Colleagues at Pathology Consultants Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 21 clinicians in the practice; 12 are shown here.

• David Cheng, MD Anatomic Pathology & Clinical Pathology Physician · Crown Point, IN
• John Donald Feczko, MD Cytopathology Physician · Valparaiso, IN
• Jun Hu, MD Anatomic Pathology & Clinical Pathology Physician · Valparaiso, IN
• Philip William McGuire, MD Cytopathology Physician · Hammond, IN
• Emilie Morphew, MD Cytopathology Physician · Hammond, IN
• Timothy Herbert Prahlow, MD Anatomic Pathology & Clinical Pathology Physician · Michigan City, IN
• Richard Nono Rosales, MD Anatomic Pathology & Clinical Pathology Physician · Lafayette, IN
• Dr. Andrew Thomas Schubeck, MD Anatomic Pathology & Clinical Pathology Physician · Lafayette, IN
• Minqian Shen Anatomic Pathology & Clinical Pathology Physician · Lafayette, IN
• Dr. Xi Wang, MD, PHD Hematology (Pathology) Physician · Merrillville, IN
• Gerald L Yancey, MD Anatomic Pathology & Clinical Pathology Physician · Valparaiso, IN
• Bing Zhu, MD Anatomic Pathology & Clinical Pathology Physician · Hammond, IN

Other providers in Dyer

• Dr. Ashley B. O'Bannon, MD

  Individual Anatomic Pathology & Clinical Pathology Physician · NPI 1629248711

  1160 Joliet St Ste 204, Dyer, IN 46311-2096 · (800) 799-2273

• Pathology Consultants Inc

  Organization Anatomic Pathology & Clinical Pathology Physician · NPI 1972596864

  425 Joliet St Ste 323, Dyer, IN 46311-1767 · (219) 873-3130