Nan Ning S. Chang, MD

Medicare activity in 2024

Official CMS public-use data for Nan Ning S. Chang, 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)228 services
2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)137 services
3. Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)133 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)67 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)49 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%
• Arthritis49%
• Diabetes45%
• Ischemic heart disease28%
• Chronic kidney disease23%

Hospitals where Nan Ning S. Chang works

Medicare's Facility Affiliation Data lists Nan Ning S. Chang 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.

• North Shore University HospitalManhasset, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330106

Practice locations

Addresses where Nan Ning S. Chang is enrolled with Medicare (CMS data updated October 2, 2026).

• 300 Community DrManhasset, NY 11030 (516) 876‑5555

Group practices

Medicare enrollment lists Nan Ning S. Chang as a member of this group (CMS data updated October 2, 2026).

• North Shore-Lij Medical PC6,440 clinicians in the group

Specialties

• Cardiovascular Disease (Cardiology)primary
• Internal Medicinealso

Find other Cardiovascular Disease (Cardiology) doctors in New York →

Other cardiologists in Manhasset

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

• Stuart O. Schecter, MD
• Michael Goyfman, MD
• Anna Plitt, MD
• Jeffrey A. Stahl, MD
• Richard H. Maisel, MD
• Abiola O. Dele Michael, MD
• Omid Kohani, MD
• Aaron Freilich, MD

All cardiologists in Manhasset →

Other clinicians in North Shore-Lij Medical PC

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

• Gail Yarmish, MD
• Letitia S. Alexander, NP
• Michelle Sheyman, MD
• John Cha, MD
• Michael Nissenbaum, MD
• Amilia Schrier, 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