John Jongyoon Byun

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.

• Community Hospital Hospital · Munster, IN · listed as Munster Medical Research Foundation Inc
• St Catherine Hospital Inc Hospital · East Chicago, IN
• St Mary Medical Center Inc Hospital · Hobart, IN

Also affiliated with 1 inpatient rehabilitation facility, which CMS identifies by certification number only.

Colleagues at 219 Health Network Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 70 clinicians in the practice; 12 are shown here.

• Claudia G Becerril-Clas, MD Family Medicine Physician · Schererville, IN
• Dr. Alfonso A Blum, M Internal Medicine Physician · East Chicago, IN
• Edward Capoccia, MD Urology Physician · East Chicago, IN
• Barbara Diakos, MD Obstetrics & Gynecology Physician · Saint John, IN
• Alma Donna Farin, DO Obstetrics & Gynecology Physician · Munster, IN
• Dr. Ayesha M Hasan, DO Obstetrics & Gynecology Physician · Schererville, IN
• Lauren Locke Registered Nurse · Cedar Lake, IN
• Claudia Guadalupe Santacruz, PA-C Physician Assistant · East Chicago, IN
• John Thomas Taylor, MD Obstetrics & Gynecology Physician · LA Porte, IN
• Dr. Janos Antal Uzonyi, MD Obstetrics & Gynecology Physician · East Chicago, IN
• Brittany J Vegh, FNP Family Nurse Practitioner · Munster, IN
• Scot Eric West Registered Nurse · East Chicago, IN

Other providers in Munster

• James N Dreyfus, MD

  Individual Rheumatology Physician · NPI 1083673552

  10110 Don S Powers Dr Ste 101D, Munster, IN 46321-4070 · (219) 670-4421

• Dr. Tarek Kudaimi, MD

  Individual Rheumatology Physician · NPI 1689638033

  801 Macarthur Blvd Ste 305, Munster, IN 46321-2915 · (219) 836-1310

• Tarek Kudaimi MD, LLC

  Organization Rheumatology Physician · NPI 1912237017

  801 Macarthur Blvd Ste 305, Munster, IN 46321-2915 · (219) 836-1310

• Dr. Anita Mary Zachariah, MD

  Individual Rheumatology Physician · NPI 1912091968

  7905 S Calumet Ave, Munster, IN 46321-1215 · (219) 836-5800