Dr. Michael Mangan, 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.

• Edward W Sparrow Hospital Hospital · Lansing, MI · listed as Edward W. Sparrow Hospital
• McLaren Greater Lansing Hospital · Lansing, MI
• Sparrow Ionia Hospital Hospital · Ionia, MI
• University Of Michigan Health - Sparrow Eaton Hospital · Charlotte, MI · listed as Sparrow Eaton Hospital

Colleagues at David J. Smith MD PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 17 clinicians in the practice; 12 are shown here.

• Mr. Edward Dean Ball, DO Family Medicine Physician · Grand Ledge, MI
• Mrs. Sandra Gikas Brooks, MSW Clinical Social Worker · Lansing, MI
• Jami M Devarona, NP Family Nurse Practitioner · Grand Ledge, MI
• Dr. Robyn D Gazall, DO Procedural Dermatology Physician · Grand Ledge, MI
• Dr. Lauren Victoria Greene, MD Sports Medicine (Family Medicine) Physician · Grand Ledge, MI
• Timothy J Izzo, DO Family Medicine Physician · Grand Ledge, MI
• Robert A Jason, DO Family Medicine Physician · Crescent City, CA
• Megan C Meibeyer, LPC Professional Counselor · Grand Ledge, MI
• Elizabeth Paine, DO Internal Medicine Physician · Grand Ledge, MI
• Eric G Smith, MD Family Medicine Physician · Grand Ledge, MI
• Mrs. Maria A Thelen, PA-C Physician Assistant · Saint Johns, MI
• Mrs. Tracy Marie Wirth, FNP Family Nurse Practitioner · Saint Johns, MI

Other providers in Grand Ledge

• Elizabeth Paine, DO

  Individual Internal Medicine Physician · NPI 1679929343

  1035 Charlevoix Dr Ste 100, Grand Ledge, MI 48837-2223 · (517) 627-2181

• Dr. Kent Michael Yaney, DO

  Individual Internal Medicine Physician · NPI 1053500983

  700 Jenne St, Grand Ledge, MI 48837-1828 · (517) 364-1000