Daisy Duan, 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.

• Johns Hopkins Bayview Medical Center Hospital · Baltimore, MD
• 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 705 clinicians in the practice; 12 are shown here.

• Miss. Alexandra Borakove Physician Assistant · Baltimore, MD
• Jerome Alain Byam Surgery Physician · Washington, DC
• Kaitlyn Marie Frazier, MD Student in an Organized Health Care Education/Training Program · Baltimore, MD
• Henry Halperin, MD Cardiovascular Disease Physician · Baltimore, MD
• Dr. Susrutha Kotwal, MD Internal Medicine Physician · Baltimore, MD
• Dr. Serena McClam Liebengood, MD, MHS Diagnostic Radiology Physician · Baltimore, MD
• Dr. Henry Joseph Michtalik, MD Internal Medicine Physician · Baltimore, MD
• Thang Cong Nguyen, MD Internal Medicine Physician · Baltimore, MD
• Dr. David James Polhemus, MD, PHD Internal Medicine Physician · Baltimore, MD
• Monica Denise Watkins, MD Neuroradiology Physician · Bethesda, MD
• Allison Weaver, MD Internal Medicine Physician · Baltimore, MD
• Dr. Pamela Ann Wright, MD Surgery Physician · Bethesda, MD

Other providers in Baltimore

• Dr. Laura Cowen, MD

  Individual Endocrinology, Diabetes & Metabolism Physician · NPI 1457514333

  200 E 33rd St 33rd Street Professional Bldg Ste 551, Baltimore, MD 21218-3322 · (410) 554-4511

• Stephen Neil Davis, MD

  Individual Endocrinology, Diabetes & Metabolism Physician · NPI 1811071913

  22 S Greene St, Baltimore, MD 21201-1544 · (410) 328-2488

• Adrian Dobs, MD

  Individual Endocrinology, Diabetes & Metabolism Physician · NPI 1639126667

  600 N Wolfe St, Baltimore, MD 21287-0005 · (410) 955-9270

• Dr. Thomas W. Donner, MD

  Individual Endocrinology, Diabetes & Metabolism Physician · NPI 1659329977

  600 N Wolfe St, Baltimore, MD 21287-0005 · (410) 955-2908

• Dr. Justin B Echouffo Tcheugui, MD

  Individual Endocrinology, Diabetes & Metabolism Physician · NPI 1972867406

  5501 Hopkins Bayview Cir # 2A62, Baltimore, MD 21224 · (410) 955-3663

• Josephine M Egan, MD

  Individual Endocrinology, Diabetes & Metabolism Physician · NPI 1790840007

  3001 S Hanover St Nia-Astra Unit 5TH Fl, Baltimore, MD 21225-1233 · (410) 558-8381

• Endocrinology Associates of Baltimore LLC

  Organization Endocrinology, Diabetes & Metabolism Physician · NPI 1659556413

  3421 Benson Ave Ste 210, Baltimore, MD 21227-1056 · (410) 368-1370

• First Step Health Systems LLC

  Organization Endocrinology, Diabetes & Metabolism Physician · NPI 1215255120

  2305 N Charles St, Baltimore, MD 21218-5128 · (410) 779-6920