Dr. Sezen Karakus, MDMPH

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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
• Penn Presbyterian Medical Center Hospital · Philadelphia, PA

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.

• Lauren Summer Bano, PA Physician Assistant · Baltimore, MD
• Kathleen Bechtold, PHD Clinical Psychologist · Baltimore, MD
• Andrew Macgregor Cameron, MD Transplant Surgery Physician · Baltimore, MD
• Andrea Lynn Cox, MD Infectious Disease Physician · Baltimore, MD
• Deanna Grasso, PA-C Athletic Trainer · Baltimore, MD
• Henry Jampel, MD Ophthalmology Physician · Baltimore, MD
• Sean Leng, MD Internal Medicine Physician · Baltimore, MD
• Dawn Merbach, FNP-C Nurse Practitioner · Baltimore, MD
• Jillian A. Polonchak, AGACNP-BC Acute Care Nurse Practitioner · Los Angeles, CA
• MS. Kristen Marie Rodenbush, CRNP Pediatric Oncology Registered Nurse · Baltimore, MD
• Donald Shaffner, MD Critical Care Medicine (Anesthesiology) Physician · Baltimore, MD
• Katarzyna Wegrzyn, MD Orthopaedic Surgery Physician · Baltimore, MD

Other providers in Philadelphia

• Dr. Nicholas Paul Hadjokas, MD

  Individual Cornea and External Diseases Specialist Physician · NPI 1205327459

  840 Walnut St Ste 920, Philadelphia, PA 19107-5109 · (215) 928-3180

• Grace Huang, MD

  Individual Cornea and External Diseases Specialist Physician · NPI 1649666561

  2610 E Allegheny Ave, Philadelphia, PA 19134-5104 · (800) 448-6767

• Aditya Kanesa-Thasan, MD

  Individual Cornea and External Diseases Specialist Physician · NPI 1700276391

  840 Walnut St Ste 920, Philadelphia, PA 19107-5109 · (215) 928-3180

• Samuel Korntner, MD

  Individual Cornea and External Diseases Specialist Physician · NPI 1801546429

  840 Walnut St Ste 920, Philadelphia, PA 19107-5180 · (215) 928-3180

• Zachary C. Landis, MD

  Individual Cornea and External Diseases Specialist Physician · NPI 1124405378

  840 Walnut St Ste 920, Philadelphia, PA 19107-5109 · (215) 928-3180

• Dr. Matthew C Santos, MD

  Individual Cornea and External Diseases Specialist Physician · NPI 1295229342

  840 Walnut St Ste 920, Philadelphia, PA 19107-5109 · (215) 928-3180

• Imani Michaela Williams, MD

  Individual Cornea and External Diseases Specialist Physician · NPI 1053059782

  840 Walnut St Ste 920, Philadelphia, PA 19107-5180 · (215) 928-3000