Isaac Eisenstein, M.D.
NPI 1780649830ActiveIndividual· Internal Medicine, Cardiovascular Disease· Lakewood, CA
Internal Medicine, Cardiovascular Disease (M.D.) with Prohealth Partners, A Medical Group, practicing in Lakewood, California. Their prescriptions cost Medicare Part D more than their services did: $538,381 for 2,480 claims, against $127,182 paid for services in 2024. Edwards Lifesciences Corporation was the largest of 15 companies reporting payments in 2025, $1,565 in all, mostly food and beverage. Lists Uci Health-Lakewood and 1 other hospital as hospital affiliations.
Overview
| NPI | 1780649830 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 20, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | A31303 | 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 - Cardiovascular Disease (Cardiology) (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 556 |
|---|---|
| Services billed | 2,006 across 68 procedure codes |
| Paid by Medicare | $127,182 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,480 · 6,064 30-day fills |
|---|---|
| Patients | 569 |
| Total drug cost | $538,381 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 1968 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Medical group
- Prohealth Partners, A Medical GroupLong Beach, CA · 239 clinicians
Hospital affiliations
- Uci Health-LakewoodLakewood, CA
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$1,565 · 60 payments from 15 companies
- 2024$2,079 · 67 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Edwards Lifesciences Corporation | $399.57 | 7 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $261.81 | 9 |
| Novartis Pharmaceuticals Corporation | $205.96 | 13 |
| Merck Sharp & Dohme LLC | $190.50 | 7 |
| Novo Nordisk Inc | $132.40 | 7 |
What the 2025 payments were for
- Food and Beverage$1,565 · 60 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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