Michael Greas

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.

• Loma Linda University Medical Center Hospital · Loma Linda, CA
• Loma Linda University Medical Center-Murrieta Hospital · Murrieta, CA
• Riverside University Health System-Medical Center Hospital · Moreno Valley, CA · listed as Riverside University Health Systems - Medical Center

Colleagues at Faculty Physicians and Surgeons of Llusm

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1308 clinicians in the practice; 12 are shown here.

• Dr. Mohammd Reza Amini, MD Cardiovascular Disease Physician · Loma Linda, CA
• Dr. Charles Fitzgerald Bratton, MD Transplant Surgery Physician · Loma Linda, CA
• Gregory Cheek, MD Pulmonary Disease Physician · Loma Linda, CA
• Dr. Negar Hosseinifar, DO Student in an Organized Health Care Education/Training Program · Loma Linda, CA
• Sofia Yasmin Khera, MD Student in an Organized Health Care Education/Training Program · Tucson, AZ
• Dr. David Xiaotian Liu, MD Student in an Organized Health Care Education/Training Program · Moreno Valley, CA
• Tia C Mackintosh Critical Care Medicine (Anesthesiology) Physician · Loma Linda, CA
• Danielle Marie Mason, MD Obstetrics & Gynecology Physician · Loma Linda, CA
• Dr. Andrew Jeffery Mock, MD, MPH Family Medicine Physician · Newport Beach, CA
• Kristin Smith, PA Medical Physician Assistant · Loma Linda, CA
• Bruke Tedla Adult Congenital Heart Disease Physician · Loma Linda, CA
• Timothy Philip Wong, DO Sleep Medicine (Family Medicine) Physician · Loma Linda, CA

Other providers in Loma Linda

• Dr. Paul Clifford Herrmann, MD

  Individual Hematology (Pathology) Physician · NPI 1366655359

  11234 Anderson St Rm 2516, Loma Linda, CA 92354-2804 · (909) 558-4000