Mark A. Lagatta, 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. Those with a page here are linked.

• Orlando Health Hospital · Orlando, FL
• Oviedo Medical Center Hospital · Oviedo, FL · listed as Oviedo Medical Center, LLC
• DaVita Winter Park Hemo Dialysis Dialysis facility · Winter Park, FL · listed as Total Renal Care Inc
• Adventhealth Orlando Hospital · Orlando, FL
• DaVita Winter Park Home PD Dialysis Dialysis facility · Winter Park, FL

Also affiliated with 1 inpatient rehabilitation facility, which CMS identifies by certification number only.

Colleagues at Nephrology Associates of Central Florida, PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 35 clinicians in the practice; 12 are shown here.

• Jeffrey Mark Cohen, MD Nephrology Physician · Orlando, FL
• Mrs. Doris Gokool, APRN Family Nurse Practitioner · Lake Mary, FL
• Karen L. Miller, PA Medical Physician Assistant · Orlando, FL
• Carlos Hernando Moreno Castaneda, MD, FASN Internal Medicine Physician · Apopka, FL
• Dr. Clarylee Octaviani, MD Nephrology Physician · Lake Mary, FL
• Uday K Ranjit, MD Nephrology Physician · Orlando, FL
• Alfred Rodriguez, MD Nephrology Physician · Lake Mary, FL
• Juan Eduardo Sanchez, MD Nephrology Physician · Apopka, FL
• Jose L Santini, MD Nephrology Physician · Lake Mary, FL
• Shobana Sivan, MD Internal Medicine Physician · Winter Park, FL
• Joseph W Warren, MD Nephrology Physician · Orlando, FL
• Timothy D. Youell, MD Nephrology Physician · Orlando, FL

Other providers in Winter Park

• Florida Nephrology Hypertension & Renal Transplantation, LLC

  Organization Nephrology Physician · NPI 1366006967

  4355 Bear Gully Rd Ste 1024, Winter Park, FL 32792-9422 · (407) 647-2550

• Dr. Alexandra Carol Hardy, MD

  Individual Nephrology Physician · NPI 1598391401

  4100 Metric Dr Ste 200, Winter Park, FL 32792-6832 · (407) 681-8720

• Jafar Mahmood, MD

  Individual Nephrology Physician · NPI 1154387165

  807 S Orlando Ave Ste C, Winter Park, FL 32789-4870 · (407) 894-4693

• Ijlal Uddin, MD

  Individual Nephrology Physician · NPI 1760652879

  4355 Bear Gully Rd Ste 1024, Winter Park, FL 32792-9422 · (407) 288-8750

• Dr. Mark Williams, MD

  Individual Nephrology Physician · NPI 1770558702

  3727 N Goldenrod Rd Ste 105, Winter Park, FL 32792-8611 · (407) 657-0296