Siyi Zhang, OD
NPI 1679251102ActiveIndividual· Optometrist· Newport Beach, CA
Optometrist (OD) in Newport Beach, California, trained at Southern California College of Optometry (class of 2023). Their prescriptions cost Medicare Part D more than their services did: $7,257 for 34 claims, against $2,432 paid for services in 2024. Bausch & Lomb Americas Inc. was the largest of 14 companies reporting payments in 2025, $2,074 in all, mostly food and beverage.
Overview
| NPI | 1679251102 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | Yes |
| NPI issued | Jul 5, 2023 |
| Last updated in NPPES | Mar 24, 2024 |
| Certified by provider | Mar 24, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | OPT35548-TLG | 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 22 |
|---|---|
| Services billed | 31 across 8 procedure codes |
| Paid by Medicare | $2,432 |
Part D prescriptions in 2024
| Prescriptions (claims) | 34 · 37 30-day fills |
|---|---|
| Patients | 25 |
| Total drug cost | $7,257 |
| Generic share | 56% of claims |
Education and affiliations
| Medical school | Southern California College of Optometry |
|---|---|
| Graduation year | 2023 |
| Medicare specialty | Optometry |
Medical group
- Thomas S Tooma M D A Professional CorporationSan Diego, CA · 31 clinicians
Industry payments (Open Payments)
- 2025$2,074 · 98 payments from 14 companies
- 2024$1,108 · 37 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bausch & Lomb Americas Inc. | $414.06 | 14 |
| Dompe US, Inc. | $398.70 | 15 |
| Mallinckrodt Hospital Products Inc. | $360.51 | 22 |
| Tarsus Pharmaceuticals, Inc. | $227.71 | 22 |
| Ani Pharmaceuticals, Inc. | $167.21 | 10 |
What the 2025 payments were for
- Food and Beverage$2,056 · 97 payments
- Entertainment$18.21 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other optometrists in Newport Beach
- 1023238961
- 1063145688
- 1073139291
- 1194955849
- 1255991840
- 1457981219
- 1689170664
- 1871615328
- 1407289259
- 1700105582
- 1710180781
- 1750894630
All 46 optometrists in Newport Beach · All optometrists in California