Joseph Cha, M.D.
NPI 1902003668ActiveIndividual· Internal Medicine, Nephrology· Woodland Hills, CA
Internal Medicine, Nephrology (M.D.) in Woodland Hills, California, trained at Loma Linda University School of Medicine (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $175,401 for 1,570 claims, against $4,470 paid for services in 2024.
Overview
| NPI | 1902003668 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 27, 2007 |
| Last updated in NPPES | Dec 8, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A108677 | CA |
| Internal Medicine | 207R00000X | A108677 | 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); Practitioner - Nephrology (HI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 21 |
|---|---|
| Services billed | 56 across 10 procedure codes |
| Paid by Medicare | $4,470 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,570 · 4,655 30-day fills |
|---|---|
| Patients | 387 |
| Total drug cost | $175,401 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Loma Linda University School of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Hospital affiliation
- Kaiser Foundation Hospital - Woodland HillsWoodland Hills, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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