Dr. Asa Matthew Margolis, DO, MPH, MS

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.

• Johns Hopkins Hospital, The Hospital · Baltimore, MD · listed as The Johns Hopkins Hospital

Colleagues at Johns Hopkins University

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2855 clinicians in the practice; 12 are shown here.

• Alexandra Marie Abbate, MD Obstetrics & Gynecology Physician · Baltimore, MD
• Jane L Abernethy, MD Internal Medicine Physician · Baltimore, MD
• Dr. Marshall Stephen Bedine, MD Specialist · Lutherville, MD
• Monique Jean Cheng, MD Student in an Organized Health Care Education/Training Program · Pittsburgh, PA
• Jessica Engle, DO Physical Medicine & Rehabilitation Physician · Baltimore, MD
• Dr. Panagis Galiatsatos, MD Pulmonary Disease Physician · Baltimore, MD
• Dr. Amanda Dean Henderson, MD Ophthalmology Physician · Baltimore, MD
• John Brendon Miller, MD Rheumatology Physician · Baltimore, MD
• Sara Munoz-Blanco Pediatric Hospice and Palliative Medicine Physician · Baltimore, MD
• Dr. Mari Nakazawa, MD Medical Oncology Physician · Baltimore, MD
• Katherine Lyn Norgaard, MD Anesthesiology Physician · Aberdeen, MD
• Lindsay Claire Sheets, MD, MPH Internal Medicine Physician · Baltimore, MD

Other providers in Baltimore

• Richa Manglorkar

  Individual Emergency Medicine Physician · NPI 1629539622

  1830 E Monument St Ste 6-100, Baltimore, MD 21287-0020 · (410) 955-5107

• Edana Mann, MD

  Individual Emergency Medicine Physician · NPI 1891734422

  9000 Franklin Square Dr, Baltimore, MD 21237-3901 · (410) 682-7046

• Marble Emergency Physicians, LLC

  Organization Emergency Medicine Physician · NPI 1174995021

  2401 W Belvedere Ave, Baltimore, MD 21215-5216 · (469) 401-2386

• Dr. Darren Peter Mareiniss, MD

  Individual Emergency Medicine Physician · NPI 1689813909

  9000 Franklin Square Dr, Baltimore, MD 21237-3901 · (972) 533-2486

• Bonnie Katherine Marr, MD

  Individual Emergency Medicine Physician · NPI 1295055010

  600 N Wolfe St, Baltimore, MD 21287-0005 · (410) 955-2097

• Dr. Sarah Carle Marrone, MD

  Individual Emergency Medicine Physician · NPI 1740453646

  5601 Loch Raven Blvd, Baltimore, MD 21239-2945 · (855) 546-1192

• Lucille Mai Martin, MD

  Individual Emergency Medicine Physician · NPI 1508506684

  22 S Greene St, Baltimore, MD 21201-1544 · (667) 214-2208

• Dr. Joseph Patrick Martinez, MD

  Individual Emergency Medicine Physician · NPI 1619934635

  22 S Greene St, Baltimore, MD 21201-1544 · (301) 631-8101