Dr. Jonathan Allen Webster, 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.

• John Henry Brems, MD Critical Care Medicine (Internal Medicine) Physician · Baltimore, MD
• Dr. Anthony Raymond Cox Jr., MD Ophthalmology Physician · Bethesda, MD
• MS. Marie Ann Defrancesco-Malviya, CRNA Registered Nurse · Columbia, MD
• Mackenzie Doughty Physician Assistant · Baltimore, MD
• Ian Drummond, MD Anesthesiology Physician · Baltimore, MD
• Robert Greenberg, MD Anesthesiology Physician · Baltimore, MD
• Dr. Maximilian Konig, MD Internal Medicine Physician · Baltimore, MD
• Autusa Pahlavan Obstetrics & Gynecology Physician · Baltimore, MD
• Lia Penn Addiction Medicine (Internal Medicine) Physician · Baltimore, MD
• Patricia Rutledge, PA-C Physician Assistant · Baltimore, MD
• Joseph Seta, MD Orthopaedic Surgery Physician · Columbia, MD
• Dr. Francis John Tinney Jr., MD Trauma Surgery Physician · Baltimore, MD

Other providers in Baltimore

• MS. Rachael Walker

  Individual Medical Oncology Physician · NPI 1487241584

  600 N Wolfe St, Baltimore, MD 21287-0005 · (410) 955-5000

• Laura Walsh

  Individual Medical Oncology Physician · NPI 1396364139

  5801 Smith Ave Bldg SUITE210, Baltimore, MD 21209-3652 · (410) 735-7000

• Yuxuan Wang

  Individual Medical Oncology Physician · NPI 1316486301

  600 N Wolfe Street The Johns Hopkins Hospital, Baltimore, MD 21287-2109 · (410) 955-5000

• Najeff Waseem

  Individual Medical Oncology Physician · NPI 1598119711

  1650 Orleans St, Baltimore, MD 21287-0013 · (410) 955-5000

• Daniel Zabransky

  Individual Medical Oncology Physician · NPI 1962861302

  1800 Orleans Street The Johns Hopkins Hospital, Baltimore, MD 21287-0005 · (410) 955-7911

• Elias Zambidis, MD, PHD

  Individual Medical Oncology Physician · NPI 1124054549

  600 N Wolfe St, Baltimore, MD 21287-0005 · (410) 955-6132

• Jacquelyn Winifred Zimmerman, MD, PHD

  Individual Medical Oncology Physician · NPI 1871912618

  1800 Orleans St Fl 3, Baltimore, MD 21287-0010 · (410) 955-3613