Nathalie H. Urrunaga, MD

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.

• 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

Colleagues at University of Maryland Physicians PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 390 clinicians in the practice; 12 are shown here.

• Kimberlee Bizzell, MD Internal Medicine Physician · Baltimore, MD
• Margaret Connolly Pulmonary Disease Physician · Columbus, OH
• Leah A Couture, MD Hospice and Palliative Medicine (Internal Medicine) Physician · Baltimore, MD
• James Doub, MD Internal Medicine Physician · Huntington, WV
• Lisa Weiss Forbess, MD Cardiovascular Disease Physician · Baltimore, MD
• Mark Gladwin Critical Care Medicine (Internal Medicine) Physician · Bethesda, MD
• Alison V Grazioli, MD Internal Medicine Physician · Baltimore, MD
• Dr. Bruce D Greenwald, MD Gastroenterology Physician · Baltimore, MD
• Dr. Reyaz U. Haque, MD Cardiovascular Disease Physician · Baltimore, MD
• Swetha Mannem, MD Internal Medicine Physician · Baltimore, MD
• Dr. Joseph Theressa Nehu Parimi, MD Internal Medicine Physician · Columbia, MO
• Dr. Nirav G. Shah, MD Critical Care Medicine (Internal Medicine) Physician · Baltimore, MD

Other providers in Baltimore

• University of Maryland Physicians, PA

  Organization Gastroenterology Physician · NPI 1023825627

  800 Linden Ave Fl 9, Baltimore, MD 21201-4622 · (410) 552-2539

• University of Maryland Physicians, PA

  Organization Gastroenterology Physician · NPI 1053128652

  827 Linden Ave, Baltimore, MD 21201-4606 · (410) 328-8730

• University of Maryland Physicians, PA

  Organization Gastroenterology Physician · NPI 1386451755

  419 W Redwood St Ste 600, Baltimore, MD 21201-7000 · (667) 214-1515

• Ralph E Updike, MD

  Individual Gastroenterology Physician · NPI 1952384992

  4660 Wilkens Ave Ste 301, Baltimore, MD 21229-4845 · (410) 646-4404

• Dr. Arjun Vaid, MD

  Individual Gastroenterology Physician · NPI 1467617803

  1838 Greene Tree Rd Ste 400, Baltimore, MD 21208-6391 · (410) 602-9343

• Valaparambil K. Sivan, MD

  Organization Gastroenterology Physician · NPI 1033438437

  9106 Philadelphia Rd Ste 214, Baltimore, MD 21237-4329 · (410) 238-0101

• Sumita Verma, MD

  Individual Gastroenterology Physician · NPI 1548206782

  600 N Wolfe St, Baltimore, MD 21287-0005 · (410) 955-4166

• Erik C Vonrosenvinge, MD

  Individual Gastroenterology Physician · NPI 1992847321

  22 S Greene St N3W62, Baltimore, MD 21201-1544 · (410) 328-8750