Matthew S Callander, 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.

• Uphs Marquette Dlp Hospital Hospital · Marquette, MI · listed as Dlp Marquette General Hospital LLC

Colleagues at Apogee Medical Group Michigan PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 44 clinicians in the practice; 12 are shown here.

• Nicole Alexander, MD Critical Care Medicine (Internal Medicine) Physician · Marquette, MI
• Jay Marcus Anderson, DO Internal Medicine Physician · Rochester, MN
• Marcelyn Anderson, PA-C Medical Physician Assistant · Grand Rapids, MI
• Tobiloba Bamigboje, MD Internal Medicine Physician · Pontiac, MI
• Ginger Kay Bohl, MD Family Medicine Physician · Marquette, MI
• Kareem Elder, MD Internal Medicine Physician · Garfield Hts, OH
• Dr. Mark Francis Grenquist, DO Internal Medicine Physician · Chelsea, MI
• Toni Rae Harnett Nurse Practitioner · Marquette, MI
• Thomas John Massie, MD Student in an Organized Health Care Education/Training Program · Marquette, MI
• Eric Mathias, FNP Registered Nurse · Westlake, TX
• Mrs. Kimberly Ann McLain, NP-C Family Nurse Practitioner · Marquette, MI
• Anne Marie Miller, FNP-C Critical Care Medicine Registered Nurse · Richland, MI

Other providers in Marquette

• Adfinitas Health at Marquette, LLC

  Organization Hospitalist Physician · NPI 1770091381

  1414 W Fair Ave, Marquette, MI 49855-2675 · (906) 225-3905

• Adfinitas Health at Up Marquette, PLLC

  Organization Hospitalist Physician · NPI 1205336260

  1414 W Fair Ave, Marquette, MI 49855-2675 · (906) 225-3905