Katerina Freyre Diaz, MD

Medicare activity in 2024

Official CMS public-use data for Katerina Freyre Diaz, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)117 services
2. Diagnostic mammography of both breasts (77066)75 services
3. Complete ultrasound scan of 1 breast (76641)64 services
4. Diagnostic mammography of 1 breast (77065)53 services
5. Limited ultrasound scan of 1 breast (76642)43 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure75%
• High cholesterol75%
• Arthritis57%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)54%
• Diabetes50%
• Ischemic heart disease22%

Hospitals where Katerina Freyre Diaz works

Medicare's Facility Affiliation Data lists Katerina Freyre Diaz at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Maimonides Medical CenterBrooklyn, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330194

Practice locations

Addresses where Katerina Freyre Diaz is enrolled with Medicare (CMS data updated October 2, 2026).

• 4802 10th AveBrooklyn, NY 11219 (718) 283‑6158

Group practices

Medicare enrollment lists Katerina Freyre Diaz as a member of this group (CMS data updated October 2, 2026).

• Maimonides Medical Center - MMC Radiology FPP57 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in New York →

Other radiologists in Brooklyn

Clinicians with the same Medicare primary specialty in Brooklyn, NY — not a recommendation.

• William Louie, MD
• Stephen A. Waite, MD
• Joseph Habert, MD
• Deborah L. Reede, MD
• Bryan J. Kang, MD
• Qasim S. Sheikh, MD
• Jacob Mandel, MD
• Jay G. Hochsztein, MD

All radiologists in Brooklyn →

Other clinicians in Maimonides Medical Center - MMC Radiology FPP

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Joseph Habert, MD
• Mark A. Flyer, MD
• Daniel Masri, MD
• Jessica Torrente, MD
• Irina Kissin, MD
• Yevgeniy Margulis, MD

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians