Tin Yan Alvin Liu, 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 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.

• Dr. Abdulaziz Farouk A Ahmed, MD Orthopaedic Surgery Physician · Baltimore, MD
• MS. Cecilia Cordova, MD Sports Medicine (Physical Medicine & Rehabilitation) Physician · East Meadow, NY
• Anthony Franco Gonzales Optometrist · Havre de Grace, MD
• Kirlos N Haroun, MD Emergency Medicine Physician · Baltimore, MD
• Tania Jain, MD Internal Medicine Physician · Baltimore, MD
• Marion Archer James, CRNP Adult Health Nurse Practitioner · Baltimore, MD
• April Lynn Karczmarek, DNP Acute Care Nurse Practitioner · Bel Air, MD
• Dr. Connie Qiu, MD, PHD Dermatology Physician · Baltimore, MD
• Andrew M Simmerman, MD Internal Medicine Physician · Lafayette, IN
• Faresha L Sims Certified Registered Nurse Anesthetist · Towson, MD
• Eleanor Margaret Sullivan Nurse Practitioner · Baltimore, MD
• Radiana Trifonova, MD Student in an Organized Health Care Education/Training Program · Baltimore, MD

Other providers in Baltimore

• Yang Li, MD

  Individual Ophthalmology Physician · NPI 1427267053

  600 N Wolfe St Wilmer Eye Institute, Baltimore, MD 21287-0005 · (512) 663-4342

• Paulina Liberman Salazar, MD

  Individual Ophthalmology Physician · NPI 1174176010

  600 N Wolfe St, Baltimore, MD 21287-0005 · (410) 955-2966

• Lisa Young Lin, MD, MBE

  Individual Ophthalmology Physician · NPI 1801355904

  1800 Orleans St, Baltimore, MD 21287-0010 · (410) 502-2037

• Dr. Robert A Liss, MD

  Individual Ophthalmology Physician · NPI 1235125402

  419 Redwood St 420, Baltimore, MD 21201-1734 · (410) 328-6533

• Robert A. Loeb, MD

  Individual Ophthalmology Physician · NPI 1730110966

  1105 N Point Blvd Ste 323, Baltimore, MD 21224-3419 · (410) 282-5954

• M. Barry Blum MD PA

  Organization Ophthalmology Physician · NPI 1225142060

  2 Hamill Rd Ste 215, Baltimore, MD 21210-1806 · (410) 486-3736

• Ross B.l. Macintyre, MD

  Individual Ophthalmology Physician · NPI 1467654202

  600 N Wolfe St Maumenee 317, Baltimore, MD 21287-0005 · (410) 955-5214

• Alejandra Maiz, MD

  Individual Ophthalmology Physician · NPI 1497371892

  600 N Wolfe St, Baltimore, MD 21264-2303 · (410) 955-5080