Alexander Richard Chang, M.D.
NPI 1407016967ActiveIndividual· Internal Medicine, Nephrology· Danville, PA
Internal Medicine, Nephrology (M.D.) in Danville, Pennsylvania, trained at Ohio State University College of Medicine (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $707,112 for 1,171 claims, against $16,290 paid for services in 2024. Amgen Inc. was the largest of 4 companies reporting payments in 2025, $3,403 in all, mostly consulting fees.
Overview
| NPI | 1407016967 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 9, 2008 |
| Last updated in NPPES | Aug 20, 2020 |
| Certified by provider | Aug 20, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | MD449683 | PA |
| Internal Medicine | 207R00000X | 125053196 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 138 |
|---|---|
| Services billed | 292 across 19 procedure codes |
| Paid by Medicare | $16,290 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,171 · 2,315 30-day fills |
|---|---|
| Patients | 228 |
| Total drug cost | $707,112 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Ohio State University College of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical group
- Geisinger ClinicDanville, PA · 3,467 clinicians
Hospital affiliations
- Geisinger Medical CenterDanville, PA
- Geisinger Wyoming Valley Medical CenterWilkes Barre, PA
- Geisinger-Bloomsburg HospitalBloomsburg, PA
Industry payments (Open Payments)
- 2025$3,403 · 5 payments from 4 companies
- 2024$91.97 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $3,285 | 1 |
| Nxstage Medical, Inc. | $58.99 | 2 |
| Calliditas Therapeutics US Inc. | $38.99 | 1 |
| Ethicon US, LLC | $20.30 | 1 |
What the 2025 payments were for
- Consulting Fee$3,285 · 1 payment
- Food and Beverage$118.28 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Nephrology providers in Pennsylvania →