Katherine Smentkowski

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.

• Medstar Southern Maryland Hospital Center Hospital · Clinton, MD · listed as Medstar Southern Maryland Hospital Center Inc
• University Of Md Baltimore Washington Medical Center Hospital · Glen Burnie, MD · listed as Baltimore Washington Medical Center
• University Of Md Capital Region Medical Center Hospital · Upper Marlboro, MD

Colleagues at Chesapeake Urology Associates LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 160 clinicians in the practice; 12 are shown here.

• Benjamin Cohen, MD Urology Physician · Towson, MD
• Dr. Daoud F Dajani, MD Urology Physician · Largo, MD
• Rian Jason Dickstein, MD Urology Physician · Hanover, MD
• William T. Dowling, MD Specialist · Baltimore, MD
• Robert Adam Goldfarb, MD Urology Physician · Columbia, MD
• Andrew C Harbin, MD Student in an Organized Health Care Education/Training Program · Baltimore, MD
• Kenneth F. Langer, MD Urology Physician · Baltimore, MD
• Nicholas Thomas Leone, MD Urology Physician · Baltimore, MD
• Megan Lerner Student in an Organized Health Care Education/Training Program · Hanover, MD
• Richard Martin, PA-C Medical Physician Assistant · Rockville, MD
• David Bryan Sigman, MD Urology Physician · Baltimore, MD
• Dr. Paul Sean Van Zijl, MD Urology Physician · Bel Air, MD

Other providers in Columbia

• Dr. John Joseph Kishel, MD

  Individual Urology Physician · NPI 1144394107

  10710 Charter Dr Ste 130, Columbia, MD 21044-3128 · (410) 772-7000

• Dr. Frank Maguth Nezu, MD

  Individual Urology Physician · NPI 1770658437

  10710 Charter Dr Ste 130, Columbia, MD 21044-3128 · (410) 772-7000

• Dr. Alejandro Rodriguez, MD

  Individual Urology Physician · NPI 1023182011

  10710 Charter Dr Ste 130, Columbia, MD 21044-3128 · (410) 772-7000

• Dr. James Ryan Russell, MD

  Individual Urology Physician · NPI 1649739541

  10710 Charter Dr Ste 130, Columbia, MD 21044-3258 · (410) 772-7000

• Briana Nicole Stine

  Individual Urology Physician · NPI 1790373330

  6504 Ranging Hills Gate, Columbia, MD 21044-6068 · (443) 812-2757

• University of Maryland Surgical Associates, PA

  Organization Urology Physician · NPI 1447112735

  5900 Waterloo Rd, Columbia, MD 21045-2639 · (667) 214-1718

• University of Maryland Surgical Associates, PA

  Organization Urology Physician · NPI 1861320236

  5900 Waterloo Rd, Columbia, MD 21045-2639 · (410) 328-5544

• University of Maryland Surgical Associates, PA

  Organization Urology Physician · NPI 1982533725

  5890 Waterloo Rd, Columbia, MD 21045-2617 · (410) 328-5544