Susan S. Chang, MD
NPI 1073673273ActiveIndividual· Internal Medicine, Nephrology· Camarillo, CA
Internal Medicine, Nephrology (MD) in Camarillo, California, trained at University of Colorado School of Medicine, Denver (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $507,839 for 2,591 claims, against $183,988 paid for services in 2024. Merz North America, Inc. was the largest of 5 companies reporting payments in 2025, $213.02 in all, mostly food and beverage.
Overview
| NPI | 1073673273 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 11, 2006 |
| Last updated in NPPES | Jul 10, 2023 |
| Certified by provider | Jul 10, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A61663 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 384 |
|---|---|
| Services billed | 1,356 across 22 procedure codes |
| Paid by Medicare | $183,988 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,591 · 5,248 30-day fills |
|---|---|
| Patients | 307 |
| Total drug cost | $507,839 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | University of Colorado School of Medicine, Denver |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Renal Consultants of Ventura County IncCamarillo, CA · 8 clinicians
Hospital affiliations
- Community Memorial Hospital - VenturaVentura, CA
- St Johns Regional Medical CenterOxnard, CA
- Ventura County Medical CenterVentura, CA
Other facilities
- Davita College Estates DialysisDialysis facility · Oxnard, CA
- Davita Dialysis Center of CamarilloDialysis facility · Camarillo, CA
- Davita Oxnard Dialysis CenterDialysis facility · Oxnard, CA
- Davita St. Johns Home TrainingDialysis facility · Oxnard, CA
- Davita Ventura DialysisDialysis facility · Ventura, CA
Industry payments (Open Payments)
- 2025$213.02 · 8 payments from 5 companies
- 2024$381.45 · 12 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merz North America, Inc. | $117.17 | 4 |
| Dexcom, Inc. | $29.97 | 1 |
| Novartis Pharmaceuticals Corporation | $28.11 | 1 |
| Astrazeneca Pharmaceuticals LP | $22.36 | 1 |
| Ardelyx, Inc. | $15.41 | 1 |
What the 2025 payments were for
- Food and Beverage$213.02 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Nephrology providers in Camarillo
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- 1932534021
- 1902805294