Alissa K. Greenberg Lee, MD

Medicare activity in 2024

Official CMS public-use data for Alissa K. Greenberg Lee, 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)608 services
2. Test to examine how well the lungs exchange gases (94729)249 services
3. Test to determine lung volumes using sensors (94726)246 services
4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)217 services
5. Test to measure expiratory airflow and volume changes before and after medication administration (94060)182 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%
• Arthritis58%
• COPD58%
• Asthma33%
• Anxiety32%

Hospitals where Alissa K. Greenberg Lee works

Medicare's Facility Affiliation Data lists Alissa K. Greenberg Lee 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.

• Bridgeport HospitalBridgeport, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070010
• Greenwich Hospital Association -Greenwich, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070018
• Stamford HospitalStamford, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070006
• Yale-New Haven HospitalNew Haven, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070022

Practice locations

Addresses where Alissa K. Greenberg Lee is enrolled with Medicare (CMS data updated October 2, 2026).

• 5 Perryridge RdGreenwich, CT 06830 (203) 863‑3840

Group practices

Medicare enrollment lists Alissa K. Greenberg Lee as a member of this group (CMS data updated October 2, 2026).

• Northeast Medical Group Inc1,360 clinicians in the group

Specialties

• Pulmonary Diseaseprimary
• Internal Medicinealso

Find other Pulmonary Disease doctors in Connecticut →

Other pulmonologists in Greenwich

Clinicians with the same Medicare primary specialty in Greenwich, CT — not a recommendation.

• Eric M. Leibert, MD
• Sandra K. Wainwright, MD
• Alison Thompson, MD
• Michael J. Franco, MD

All pulmonologists in Greenwich →

Other clinicians in Northeast Medical Group Inc

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

• Eric M. Leibert, MD
• Tracy-Ann M. Clarke-Leconte, MD
• Tatiana Trujillo
• Scott Navarrett, MD
• Sura Celik, PA
• Rey F. Ramos, 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