Ku-Juey Raymond Chang, M.D.
NPI 1689611337ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Lake Forest, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Lake Forest, California, trained at University of Minnesota Medical School (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $1,682,560 for 4,313 claims, against $423,131 paid for services in 2024. Lilly USA, LLC was the largest of 31 companies reporting payments in 2025, $34,987 in all, mostly speaking and faculty fees.
Overview
| NPI | 1689611337 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 1, 2006 |
| Last updated in NPPES | Dec 2, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | G181497 | CA |
| Internal Medicine, Nephrology | 207RN0300X | G181497 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 376 |
|---|---|
| Services billed | 22,214 across 73 procedure codes |
| Paid by Medicare | $423,131 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,313 · 9,836 30-day fills |
|---|---|
| Patients | 395 |
| Total drug cost | $1,682,560 |
| Generic share | 60% of claims |
Education and affiliations
| Medical school | University of Minnesota Medical School |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Nephrology |
Medical group
- Scke IncLaguna Hills, CA · 22 clinicians
Hospital affiliations
- Memorialcare Saddleback Medical CenterLaguna Hills, CA
- Providence Mission HospitalMission Viejo, CA
Other facilities
- Davita Mission Viejo DialysisDialysis facility · Mission Viejo, CA
- Davita Saddleback DialysisDialysis facility · Laguna Hills, CA
- Care Plus Home HealthHome health agency · Laguna Hills, CA
- Healthways Home Health Services, IncHome health agency · Irvine, CA
Industry payments (Open Payments)
- 2025$34,987 · 161 payments from 31 companies
- 2024$87,420 · 223 payments from 25 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $24,496 | 40 |
| Amgen Inc. | $4,509 | 25 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $3,879 | 10 |
| Kyowa Kirin, Inc. | $229.01 | 7 |
| Insulet Corporation | $208.16 | 6 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$31,611 · 29 payments
- Food and Beverage$3,339 · 130 payments
- Travel and Lodging$36.40 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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