Zayn Endo, MD
NPI 1568020592ActiveIndividual· Internal Medicine, Infectious Disease· Loma Linda, CA
Internal Medicine, Infectious Disease (MD) with Faculty Physicians and Surgeons of Llusm and 1 other group, practicing in Loma Linda, California. Their prescriptions cost Medicare Part D more than their services did: $14,400 for 28 claims, against $4,307 paid for services in 2024. Abbvie Inc. was the largest of 2 companies reporting payments in 2025, $366.53 in all, mostly food and beverage. Lists Loma Linda University Medical Center as a hospital affiliation.
Overview
| NPI | 1568020592 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 4, 2019 |
| Last updated in NPPES | Aug 15, 2024 |
| Certified by provider | Aug 15, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | A181933 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 26 |
|---|---|
| Services billed | 37 across 5 procedure codes |
| Paid by Medicare | $4,307 |
Part D prescriptions in 2024
| Prescriptions (claims) | 28 · 36 30-day fills |
|---|---|
| Patients | 19 |
| Total drug cost | $14,400 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Faculty Physicians and Surgeons of LlusmLoma Linda, CA · 1,315 clinicians
- Sac Health SystemSan Bernardino, CA · 227 clinicians
Hospital affiliation
- Loma Linda University Medical CenterLoma Linda, CA
Industry payments (Open Payments)
- 2025$366.53 · 8 payments from 2 companies
- 2024$552.51 · 23 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $249.92 | 7 |
| Gilead Sciences, Inc. | $116.61 | 1 |
What the 2025 payments were for
- Food and Beverage$366.53 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 17 infectious disease specialists in Loma Linda · All infectious disease specialists in California