Nasiem Adnan Umberg, OD
NPI 1578124715ActiveIndividual· Optometrist· Ontario, CA
Optometrist (OD) with Luis A Chanes M D Inc, practicing in Ontario, California. Part D covered 270 prescriptions written in 2024, 56% of them generic. Amgen Inc. was the largest of 3 companies reporting payments in 2025, $254.93 in all, mostly food and beverage.
Overview
| NPI | 1578124715 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | Yes |
| NPI issued | Jun 27, 2019 |
| Last updated in NPPES | Nov 15, 2021 |
| Certified by provider | Nov 15, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | OPT34241TLG | 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 - Optometry (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 270 · 418 30-day fills |
|---|---|
| Patients | 75 |
| Total drug cost | $40,626 |
| Generic share | 56% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Optometry |
Medical group
- Luis A Chanes M D IncSanta Ana, CA · 7 clinicians
Industry payments (Open Payments)
- 2025$254.93 · 6 payments from 3 companies
- 2024$57.54 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $175.41 | 3 |
| Alcon Vision LLC | $64.03 | 2 |
| Dompe US, Inc. | $15.49 | 1 |
What the 2025 payments were for
- Food and Beverage$254.93 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 32 optometrists in Ontario · All optometrists in California