Quick answers
- Does Jennifer S. Chang accept Medicare assignment?
- Yes. Medicare's clinician data says Jennifer S. Chang accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Jennifer S. Chang see?
- In 2024, CMS data shows 329 Original Medicare patients and 1,199 services for Jennifer S. Chang. This counts Original Medicare only and measures volume, not quality.
- What is Jennifer S. Chang's NPI number?
- 1649537374. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Jennifer 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.
| Original Medicare patients | 329 |
|---|---|
| Services billed to Medicare | 1,199 |
| Different services or procedures | 83 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)225 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)145 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)121 services
- Ultrasound study of arm or leg veins with compression and maneuvers (93970)108 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)99 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%
- Diabetes53%
- Ischemic heart disease52%
- Heart failure35%
Hospitals where Jennifer S. Chang works
Medicare's Facility Affiliation Data lists Jennifer 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.
- Long Island Jewish Medical CenterNew Hyde Park, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330195
- 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 Jennifer S. Chang is enrolled with Medicare (CMS data updated October 2, 2026).
- 1999 Marcus AveNew Hyde Park, NY 11042 (516) 233‑3645
- 27005 75th AveNew Hyde Park, NY 11040 (516) 328‑9800
- 900 Franklin AveValley Stream, NY 11580 (516) 328‑9800
Group practices
Medicare enrollment lists Jennifer S. Chang as a member of these groups (CMS data updated October 2, 2026).
- North Shore-Lij Medical PC6,440 clinicians in the group
- North Shore-Lij Medical Group at Huntington PC46 clinicians in the group
Specialties
- Vascular Surgeryprimary
- General Surgeryalso
Other vascular surgeons in New Hyde Park
Clinicians with the same Medicare primary specialty in New Hyde Park, NY — not a recommendation.
Other clinicians in North Shore-Lij Medical PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Albert Einstein College Of Medicine Of Yeshiva University |
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649537374 |
| Corrections | Report an error or suggest an update → |
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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians