Dr. Marichu Theresa A. Matas, 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.

• Holy Cross Hospital Hospital · Silver Spring, MD

Colleagues at Galen Inpatient Physicians PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1031 clinicians in the practice; 12 are shown here.

• Brooj Awan Student in an Organized Health Care Education/Training Program · Waterbury, CT
• Richard W Beach, MD Hospitalist Physician · Salem, OR
• Dr. Harsimran Gill, MD Internal Medicine Physician · Bakersfield, CA
• Jasvir Singh Gill, MD Hospitalist Physician · Porterville, CA
• Caleb Daniel Harrison, DO Hospitalist Physician · Brazil, IN
• Charles McElyea, MD, MPH Medical Toxicology (Emergency Medicine) Physician · Sacramento, CA
• Buzand Christopher Oganesian Internal Medicine Physician · Colton, CA
• Dr. Michael Lee Bain Purviance, MD Hospitalist Physician · Lodi, CA
• Dr. Yusuf Sattar, MBBS Family Medicine Physician · Darby, PA
• James C Vu, DO Student in an Organized Health Care Education/Training Program · Long Beach, CA
• Dr. Gretchen Eileen Winter, PHD, DO Internal Medicine Physician · Templeton, CA
• Aneeqa Yousaf Dar, MD Internal Medicine Physician · Hartford, CT

Other providers in Rockville

• Dr. Belay Woldegiorgis Atnafu, MD

  Individual Hospitalist Physician · NPI 1548448822

  9901 Medical Center Dr, Rockville, MD 20850-3357 · (240) 826-5710

• Dr. Neeraj Chopra, MD

  Individual Hospitalist Physician · NPI 1053417162

  10110 Molecular Dr Ste 101, Rockville, MD 20850-7538 · (301) 444-4402

• Dr. Jung-Min Lee, MD

  Individual Hospitalist Physician · NPI 1760677124

  10 Center Drive BLDG10 ROOM12N226, Rockville, MD 20814-3024 · (301) 443-7735

• Dr. Suresh Malik, MD

  Individual Hospitalist Physician · NPI 1447466552

  50 W Edmonston Dr Ste 404, Rockville, MD 20852-1274 · (301) 762-3721

• Muhammad Hammad Siddiqi, MD

  Individual Hospitalist Physician · NPI 1679151450

  1201 Seven Locks Rd Ste 200A, Rockville, MD 20854-2931 · (301) 907-3939

• Dr. Vitaly A Stepensky, MD

  Individual Hospitalist Physician · NPI 1912299629

  726 Rockville Pike, Rockville, MD 20852-1133 · (240) 238-0411