Robert S. Chang, MD
NPI 1760581672ActiveIndividual· Emergency Medicine· Greenwich, CT
Emergency Medicine (MD) in Greenwich, Connecticut, trained at State University of New York at Stony Brook, School of Medicine (class of 1994). In 2024 Medicare paid $29,656 for 241 patients, and Part D covered 90 of their prescriptions, 88% of them generic.
Overview
| NPI | 1760581672 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 21, 2006 |
| Last updated in NPPES | Sep 23, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 25MA08016400 | NJ |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Emergency Medicine (CT); Practitioner - Emergency Medicine (NJ); Practitioner - Emergency Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 241 |
|---|---|
| Services billed | 264 across 12 procedure codes |
| Paid by Medicare | $29,656 |
Part D prescriptions in 2024
| Prescriptions (claims) | 90 · 95 30-day fills |
|---|---|
| Patients | 53 |
| Total drug cost | $662.35 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | State University of New York at Stony Brook, School of Medicine |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Emergency Medicine |
Medical groups
- Greenwich HospitalGreenwich, CT · 76 clinicians
- Malina Medical Services PCBrooklyn, NY · 34 clinicians
- Mgm Ketamine Services LLCOradell, NJ · 12 clinicians
Hospital affiliation
- Greenwich Hospital Association -Greenwich, CT
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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