Mark E Gentry, 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.

• Hendricks Regional Health Hospital · Danville, IN

Colleagues at Hendricks County Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 340 clinicians in the practice; 12 are shown here.

• Dr. Monet Williams Bowling, MD Surgical Oncology Physician · Danville, IN
• Jessica A Fidler, DO Family Medicine Physician · Greencastle, IN
• Mallory Galloway, PA-C Physician Assistant · Columbus, IN
• Courtney Brooke Lear, FNP-C Family Nurse Practitioner · Greencastle, IN
• Dr. Anne Elizabeth Mattingly, MD Surgical Oncology Physician · Danville, IN
• Katherine R McFarland, PA Surgical Physician Assistant · Danville, IN
• Evelyn Olejnik Physician Assistant · Plainfield, IN
• Gordon Reed, MD Hospitalist Physician · Danville, IN
• Sukhwinder Singh, MD Internal Medicine Physician · Indianapolis, IN
• Mrs. Lauren E Surfus, PA Physician Assistant · Avon, IN
• Dr. Frank Paul Troiano, MD Gastroenterology Physician · Danville, IN
• Mr. Darrell Lynn Whinnery, PA-C Physician Assistant · Indianapolis, IN

Other providers in Danville

• Dr. Rukeme Ake-Uzoigwe, MD

  Individual Obstetrics & Gynecology Physician · NPI 1477959419

  112 Hospital Ln Ste 200, Danville, IN 46122-1998 · (317) 745-3366

• Clark E Boccone, MD

  Individual Obstetrics & Gynecology Physician · NPI 1285832287

  112 Hospital Ln Ste 200, Danville, IN 46122-1977 · (317) 745-3366

• Erin Taylor Deist, MD

  Individual Obstetrics & Gynecology Physician · NPI 1689323107

  112 Hospital Ln Ste 200, Danville, IN 46122-1998 · (317) 745-3366

• Hendricks County Hospital

  Organization Obstetrics & Gynecology Physician · NPI 1497856272

  112 Hospital Ln Ste 302, Danville, IN 46122-1998 · (317) 272-7510

• Hendricks County Hospital

  Organization Obstetrics & Gynecology Physician · NPI 1992860159

  112 Hospital Ln Ste 200, Danville, IN 46122-1998 · (317) 745-3366

• Ian Johnston, MD

  Individual Obstetrics & Gynecology Physician · NPI 1679551345

  112 Hospital Ln Ste 302, Danville, IN 46122-1998 · (317) 272-7510

• Barbara A Koewler, MD

  Individual Obstetrics & Gynecology Physician · NPI 1588695043

  112 Hospital Ln Ste 200, Danville, IN 46122 · (317) 745-3366