Joshua Greenstein, M.D.
NPI 1104881457ActiveIndividual· Internal Medicine, Nephrology· Escondido, CA
Internal Medicine, Nephrology (M.D.) with Balboa Nephrology Medical Group Inc, practicing in Escondido, California. In 2024 Medicare paid $205,041 for 473 patients, and Part D covered 2,526 of their prescriptions, 85% of them generic. Travere Therapeutics, Inc. reported $17.63 in payments in 2024, mostly education. Lists Palomar Health Downtown Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1104881457 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 19, 2006 |
| Last updated in NPPES | Jan 16, 2026 |
| Certified by provider | Jan 16, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A68100 | 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 | 473 |
|---|---|
| Services billed | 3,045 across 26 procedure codes |
| Paid by Medicare | $205,041 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,526 · 5,493 30-day fills |
|---|---|
| Patients | 262 |
| Total drug cost | $281,038 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical group
- Balboa Nephrology Medical Group IncFountain Valley, CA · 76 clinicians
Hospital affiliations
- Palomar Health Downtown CampusEscondido, CA
- Palomar Medical Center PowayPoway, CA
Other facilities
- Davita Escondido DialysisDialysis facility · Escondido, CA
- Davita Hidden ValleyDialysis facility · Escondido, CA
- Davita San Marcos Dialysis CenterDialysis facility · San Marcos, CA
Industry payments (Open Payments)
- 2024$17.63 · 3 payments from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Travere Therapeutics, Inc. | $17.63 | 3 |
What the 2024 payments were for
- Education$17.63 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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