Dr. Mark Robert Abbruzzese

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.

• Medstar Georgetown University Hospital Hospital · Washington, DC
• Medstar Washington Hospital Center Hospital · Washington, DC · listed as Washington Hospital Center Corporation

Colleagues at Medstar Medical Group II LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3717 clinicians in the practice; 12 are shown here.

• Dr. Tamiko A. Bryant, MD Internal Medicine Physician · Bowie, MD
• Carlos Chiriboga, MD Critical Care Medicine (Internal Medicine) Physician · Clinton, MD
• Dr. Philip Jeffrey Ferris, MD Colon & Rectal Surgery Physician · Baltimore, MD
• Ensor Gumbs, MD Student in an Organized Health Care Education/Training Program · Baltimore, MD
• Carolyn Agnes Hammett, MD Internal Medicine Physician · Hyattsville, MD
• Elzbieta Janczur, MD Anesthesiology Physician · Baltimore, MD
• Mark Kotlarewsky Internal Medicine Physician · Washington, DC
• Steven Eechien Lo Neurology Physician · Washington, DC
• Dr. Glenn R. Meininger, MD Cardiovascular Disease Physician · Baltimore, MD
• Anita Naik, MD Critical Care Medicine (Internal Medicine) Physician · Bel Air, MD
• Mani Nathan Nair, MD Neurological Surgery Physician · Washington, DC
• Dr. Scott Matthew Tintle, MD Orthopaedic Hand Surgery Physician · Bethesda, MD

Other providers in Bethesda

• Dr. Brian K. Agan, MD

  Individual Infectious Disease Physician · NPI 1669434718

  8901 Rockville Pike, Bethesda, MD 20889-5095 · (301) 295-6400

• Miss. Seher Anjum

  Individual Infectious Disease Physician · NPI 1932498953

  9000 Rockville Pike Bldg 10, Bethesda, MD 20892 · (301) 402-1830

• Adam Wilson Armstrong, DO

  Individual Infectious Disease Physician · NPI 1649248329

  Walter Reed National Military Ctr 8901 Wisconsin Ave, Bethesda, MD 20889-0001 · (301) 295-6400

• Dr. Naomi Elspeth Aronson, MD

  Individual Infectious Disease Physician · NPI 1487680591

  8901 Wisconsin Ave, Bethesda, MD 20889-0004 · (301) 295-6400