Shirley S. Chang, M.D.
NPI 1720063753ActiveIndividual· Internal Medicine, Nephrology· Buffalo, NY
Internal Medicine, Nephrology (M.D.) in Buffalo, New York, trained at University of Pittsburgh School of Medicine (class of 1994). 103 Medicare patients in 2024, $26,646 paid; nearly all of their 263 Part D prescriptions were generic (90%). Otsuka America Pharmaceutical, Inc. was the largest of 6 companies reporting payments in 2025, $1,041 in all, mostly food and beverage.
Overview
| NPI | 1720063753 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 13, 2005 |
| Last updated in NPPES | Aug 24, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 236591 | NY |
| Internal Medicine, Nephrology | 207RN0300X | 042.0012325 | VT |
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 (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 103 |
|---|---|
| Services billed | 347 across 9 procedure codes |
| Paid by Medicare | $26,646 |
Part D prescriptions in 2024
| Prescriptions (claims) | 263 · 324 30-day fills |
|---|---|
| Patients | 54 |
| Total drug cost | $17,901 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Pittsburgh School of Medicine |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Nephrology |
Medical group
- Erie County Medical Center CorporationBuffalo, NY · 319 clinicians
Hospital affiliation
- Erie County Medical CenterBuffalo, NY
Industry payments (Open Payments)
- 2025$1,041 · 14 payments from 6 companies
- 2024$280.03 · 7 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $274.99 | 2 |
| Apellis Pharmaceuticals, Inc. | $219.62 | 2 |
| Travere Therapeutics, Inc. | $157.01 | 7 |
| Mallinckrodt Hospital Products Inc. | $139.48 | 1 |
| Alexion Pharmaceuticals, Inc. | $125.21 | 1 |
What the 2025 payments were for
- Food and Beverage$1,032 · 8 payments
- Education$9.41 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 25 nephrologists in Buffalo · All nephrologists in New York