Christopher Sperati, 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
• Sibley Memorial Hospital Hospital · Washington, DC
• Fresenius Kidney Care Caroline Street Dialysis facility · Baltimore, MD · listed as Baltimore County Dialysis, LLC

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.

• Dr. Sriram Balu, PA-C Physician Assistant · Baltimore, MD
• Alexander M Cao Zhang, MD Internal Medicine Physician · Baltimore, MD
• Dr. Victoria Jane Croog, MD Radiation Oncology Physician · Washington, DC
• William Davenport, PA Physician Assistant · Bethesda, MD
• Dr. Manuel Carlos De la Rosa Jr., MD Internal Medicine Physician · Baltimore, MD
• George-Marie Tonia Garber, CRNP Hemodialysis Registered Nurse · Baltimore, MD
• Nino Isakadze Cardiovascular Disease Physician · Baltimore, MD
• Flora Kisuule, MD Internal Medicine Physician · Baltimore, MD
• Adam Douglas Nadler, MD Internal Medicine Physician · Baltimore, MD
• Jessica Ratner, MD Hospitalist Physician · Baltimore, MD
• Samantha Lynn Schuetzle, CRNP Family Nurse Practitioner · Baltimore, MD
• Daniel Song, MD Radiation Oncology Physician · Baltimore, MD

Other providers in Baltimore

• Dr. E. Timothy Souweine, MD

  Individual Internal Medicine Physician · NPI 1588720478

  21 W Rd Ste 100, Baltimore, MD 21204-2325 · (410) 296-6665

• Dr. Leonard Anang Sowah, MD

  Individual Internal Medicine Physician · NPI 1003007824

  22 S Greene St, Baltimore, MD 21201-1544 · (410) 706-4619

• Ilias Spanakis, MD

  Individual Internal Medicine Physician · NPI 1639325012

  827 Linden Ave, Baltimore, MD 21201-4606 · (443) 682-6800

• Dr. Richard Glenn Spencer, MD

  Individual Internal Medicine Physician · NPI 1962536706

  5600 Nathan Shock Dr Grc 4D-08, Baltimore, MD 21224-6825 · (410) 558-8226

• Dr. Carl Sperling, MD

  Individual Internal Medicine Physician · NPI 1710956644

  5601 Loch Raven Blvd Russell Morgan Bldg 3RD Fl, Baltimore, MD 21239-2905 · (410) 464-5600

• Jerry Spivak, MD

  Individual Internal Medicine Physician · NPI 1083645303

  600 N Wolfe St, Baltimore, MD 21287-0005 · (410) 955-3142

• Nityasree Srialluri, MD

  Individual Internal Medicine Physician · NPI 1710411699

  1830 E Monument St Ste 416, Baltimore, MD 21287-0020 · (410) 955-5268

• Dr. Mukta Chandra Srivastava, MD

  Individual Internal Medicine Physician · NPI 1548455694

  22 S Greene St, Baltimore, MD 21201-1544 · (410) 328-7718