Glenn Whitman, 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. Charles Ralph Arthur III, MD Psychiatry Physician · Baltimore, MD
• Dr. Renee Denise Boss, MD Neonatal-Perinatal Medicine Physician · Baltimore, MD
• Nisha Chandra-Strobos, MD Cardiovascular Disease Physician · Baltimore, MD
• Ana De Jesus Acosta, MD Internal Medicine Physician · Baltimore, MD
• Christy Deloris Butler Gray, MD Sleep Medicine (Internal Medicine) Physician · Baltimore, MD
• Dr. Cynthia Heekyung Jun, OD Optometrist · Westminster, MD
• Christopher John Lemon, MD Emergency Medicine Physician · Westminster, MD
• Dr. Asa Matthew Margolis, DO, MPH, MS Emergency Medicine Physician · Baltimore, MD
• Redonda Miller, MD Internal Medicine Physician · Baltimore, MD
• Chiadikaobi Uchendu Onyike, MD Psychiatry Physician · Baltimore, MD
• Harry Quon, MD Radiation Oncology Physician · Baltimore, MD
• Dr. Stefan Loy Zimmerman, MD Diagnostic Radiology Physician · Baltimore, MD

Other providers in Baltimore

• University of Maryland Surgical Associates, PA

  Organization Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1689501470

  3407 Wilkens Ave, Baltimore, MD 21229-5072 · (667) 214-1718

• University of Maryland Surgical Associates, PA

  Organization Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1922935956

  3407 Wilkens Ave, Baltimore, MD 21229-5072 · (667) 214-1718

• University of Maryland Surgical Associates, PA

  Organization Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1942144225

  22 S Greene St, Baltimore, MD 21201-1544 · (667) 214-1718

• University of Maryland Surgical Associates, PA

  Organization Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1992668495

  419 W Redwood St, Baltimore, MD 21201-1734 · (667) 214-1718