Daren Stephen Primack, MD
NPI 1215905260ActiveIndividual· Phlebology· Stockton, CA
Phlebology (MD) in Stockton, California, trained at Albert Einstein College of Medicine of Yeshiva University (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $923,313 for 2,423 claims, against $216,191 paid for services in 2024. Johnson & Johnson Health Care Systems Inc. was the largest of 7 companies reporting payments in 2025, $335.97 in all, mostly food and beverage.
Overview
| NPI | 1215905260 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 8, 2006 |
| Last updated in NPPES | Jan 22, 2026 |
| Certified by provider | Jan 22, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Phlebology Primary | 202K00000X | G68135 | CA |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | G68135 | 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 - Cardiovascular Disease (Cardiology) (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 391 |
|---|---|
| Services billed | 2,257 across 46 procedure codes |
| Paid by Medicare | $216,191 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,423 · 4,571 30-day fills |
|---|---|
| Patients | 282 |
| Total drug cost | $923,313 |
| Generic share | 58% of claims |
Education and affiliations
| Medical school | Albert Einstein College of Medicine of Yeshiva University |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical groups
- Adventist Health Physicians NetworkSaint Helena, CA · 628 clinicians
- Lodi Memorial Hospital Association IncLodi, CA · 80 clinicians
Hospital affiliations
- Adventist Health Lodi MemorialLodi, CA
- Dameron HospitalStockton, CA
- Mark Twain Medical CenterSan Andreas, CA
- St Joseph's Medical Center of StocktonStockton, CA
Industry payments (Open Payments)
- 2025$335.97 · 10 payments from 7 companies
- 2024$5,827 · 40 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Johnson & Johnson Health Care Systems Inc. | $139.00 | 1 |
| Philips North America LLC | $82.38 | 3 |
| Novartis Pharmaceuticals Corporation | $37.44 | 2 |
| Actelion Pharmaceuticals US, Inc. | $26.35 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $18.84 | 1 |
What the 2025 payments were for
- Food and Beverage$335.97 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records