Dr. Marissa Elizabeth Bonyun, MD, MED, FRCSC

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. Those with a page here are linked.

• University Of Maryland Medical Center Hospital · Baltimore, MD
• University Of Md Medical Center Midtown Campus Hospital · Baltimore, MD · listed as University of Maryland Medical Center
• University Of Md Capital Region Medical Center Hospital · Upper Marlboro, MD

Colleagues at University of Maryland Orthopaedic Associates PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 67 clinicians in the practice; 12 are shown here.

• Adam Jeffrey Corn, DPT Physical Therapist · Catonsville, MD
• Dr. Samuel Torres Dona Jr., MD Sports Medicine (Physical Medicine & Rehabilitation) Physician · Hunt Valley, MD
• Casey Robert Friske, DPM Podiatrist · Hunt Valley, MD
• Todd Darrin Jaeblon, DO Orthopaedic Trauma Physician · Laurel, MD
• Heather Elizabeth Janney, DPM Foot & Ankle Surgery Podiatrist · Baltimore, MD
• Jay Karri Pain Medicine (Physical Medicine & Rehabilitation) Physician · Baltimore, MD
• Logan Kolakowski, MD Student in an Organized Health Care Education/Training Program · Laurel, MD
• Mohammad Ebrahim Oreizi Esfahani, MD Rheumatology Physician · Westminster, MD
• William Wesley Robinson, ATC, PT Physical Therapist · College Park, MD
• Dinah Schwartz Adult Health Nurse Practitioner · Hunt Valley, MD
• Karren Takamura, MD Orthopaedic Surgery Physician · Hunt Valley, MD
• Jill A Tice, PT Physical Therapist · Hunt Valley, MD

Other providers in Baltimore

• John T Antoniades, MD

  Individual Adult Reconstructive Orthopaedic Surgery Physician · NPI 1437187960

  3449 Wilkens Ave Ste 300, Baltimore, MD 21229 · (667) 234-9992

• Mr. Joseph J Ciotola, MD

  Individual Adult Reconstructive Orthopaedic Surgery Physician · NPI 1497750624

  301 St Paul Pl Lbby Level Orthopedic And Joint Replacement, Baltimore, MD 21202 · (410) 539-2227

• Grant Thomas Duvall

  Individual Adult Reconstructive Orthopaedic Surgery Physician · NPI 1629538392

  201 E University Pkwy Dept OF, Baltimore, MD 21218-2829 · (410) 554-2857

• Mark Hasenauer, MD

  Individual Adult Reconstructive Orthopaedic Surgery Physician · NPI 1710372271

  Medstar Orthopaedic Institute Johnston Prof Bldg 3333 North Calvert Street Ste #101, Baltimore, MD 21218 · (410) 554-2270

• Dr. Yonah Heller, MD

  Individual Adult Reconstructive Orthopaedic Surgery Physician · NPI 1326482407

  2700 Quarry Lake Dr Ste 300, Baltimore, MD 21209-3746 · (410) 377-8900