Zenowij Majuk, MD
NPI 1851376297ActiveIndividual· Internal Medicine, Gastroenterology· Santa Cruz, CA
Internal Medicine, Gastroenterology (MD) in Santa Cruz, California, trained at Albert Einstein College of Medicine of Yeshiva University (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $350,471 for 712 claims, against $82,668 paid for services in 2024. Janssen Biotech, Inc. was the largest of 10 companies reporting payments in 2025, $1,354 in all, mostly food and beverage.
Overview
| NPI | 1851376297 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 8, 2005 |
| Last updated in NPPES | Apr 5, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | G63264 | 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 - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 395 |
|---|---|
| Services billed | 952 across 32 procedure codes |
| Paid by Medicare | $82,668 |
Part D prescriptions in 2024
| Prescriptions (claims) | 712 · 1,287 30-day fills |
|---|---|
| Patients | 291 |
| Total drug cost | $350,471 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Albert Einstein College of Medicine of Yeshiva University |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Hospital affiliations
- Dominican HospitalSanta Cruz, CA
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
- 2025$1,354 · 48 payments from 10 companies
- 2024$1,038 · 43 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $493.53 | 13 |
| Abbvie Inc. | $295.76 | 13 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $245.03 | 8 |
| Celltrion USA Inc. | $100.85 | 4 |
| Takeda Pharmaceuticals U.S.A., Inc. | $64.31 | 3 |
What the 2025 payments were for
- Food and Beverage$1,303 · 47 payments
- Education$50.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 gastroenterologists in Santa Cruz · All gastroenterologists in California