Sue Chang, MD
NPI 1528054848ActiveIndividual· Internal Medicine, Nephrology· New Haven, CT
Internal Medicine, Nephrology (MD) in New Haven, Connecticut, trained at Michigan State University College of Human Medicine (class of 1990). Their prescriptions cost Medicare Part D more than their services did: $284,243 for 901 claims, against $97,585 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 23 companies reporting payments in 2025, $2,039 in all, mostly food and beverage.
Overview
| NPI | 1528054848 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 22, 2005 |
| Last updated in NPPES | Oct 11, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 34691 | CT |
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 - Nephrology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 238 |
|---|---|
| Services billed | 836 across 18 procedure codes |
| Paid by Medicare | $97,585 |
Part D prescriptions in 2024
| Prescriptions (claims) | 901 · 2,337 30-day fills |
|---|---|
| Patients | 199 |
| Total drug cost | $284,243 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Michigan State University College of Human Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical group
- Metabolism Associates PCNew Haven, CT · 9 clinicians
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- Yale-New Haven HospitalNew Haven, CT
Other facilities
- Usrc Orange DialysisDialysis facility · Orange, CT
Industry payments (Open Payments)
- 2025$2,039 · 57 payments from 23 companies
- 2024$1,979 · 55 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $411.89 | 3 |
| Abbvie Inc. | $236.57 | 2 |
| Gilead Sciences, Inc. | $145.00 | 1 |
| Amgen Inc. | $127.04 | 5 |
| Phathom Pharmaceuticals, Inc. | $124.80 | 1 |
What the 2025 payments were for
- Food and Beverage$2,037 · 56 payments
- Education$1.66 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 54 nephrologists in New Haven · All nephrologists in Connecticut