Nikolaos Hatzis, MD

Medicare activity in 2024

Official CMS public-use data for Nikolaos Hatzis, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)319 services
2. Critical care, first 30-74 minutes (99291)226 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)145 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)57 services
5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)52 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%
• Ischemic heart disease54%
• COPD51%
• Arthritis47%
• Atrial fibrillation37%

Hospitals where Nikolaos Hatzis works

Medicare's Facility Affiliation Data lists Nikolaos Hatzis 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.

• Suny/Stony Brook University HospitalStony Brook, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330393

Practice locations

Addresses where Nikolaos Hatzis is enrolled with Medicare (CMS data updated October 2, 2026).

• 201 Manor PlGreenport, NY 11944 (631) 726‑8717
• 240 Meeting House LnSouthampton, NY 11968 (631) 726‑8400
• 325 Meeting House LnSouthampton, NY 11968
• 3330 Noyac RdSag Harbor, NY 11963 (631) 725‑2112

Group practices

Medicare enrollment lists Nikolaos Hatzis as a member of this group (CMS data updated October 2, 2026).

• Meeting House Lane Medical Practice PC124 clinicians in the group

Specialties

• Pulmonary Diseaseprimary
• Critical Care (Intensivists)also

Find other Pulmonary Disease doctors in New York →

Other pulmonologists in New York

Clinicians with the same Medicare primary specialty in New York — not a recommendation.

• Angela Dimango, MD
• Robert C. Flowers, MD
• Irene K. Galperin, MD
• Alexei V. Bogolyubov, MD
• Mohit Chawla, MD
• Monica P. Goldklang, MD
• Anwar M. Haque, MD
• Marie J. Schmidt, MD

All pulmonologists in New York →

Other clinicians in Meeting House Lane Medical Practice PC

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

• Gabriella Kovi, MD
• Heidi J. Roppelt, MD
• Daniel M. Vanarsdale, DO
• Catherine B. O Brien
• Michael Israel, MD
• Kashif Hussain, 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