Mark Cheung, O.D.
NPI 1639464555ActiveIndividual· Optometrist· Bakersfield, CA
Optometrist (O.D.) with Cha Medical and Surgical Group PC, practicing in Bakersfield, California. Their prescriptions cost Medicare Part D more than their services did: $38,016 for 204 claims, against $23,870 paid for services in 2024. Coopervision Inc. was the largest of 7 companies reporting payments in 2025, $803.56 in all, mostly food and beverage.
Overview
| NPI | 1639464555 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | No |
| NPI issued | Jun 20, 2011 |
| Last updated in NPPES | Oct 3, 2025 |
| Certified by provider | Oct 3, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | OPT14371TLG | 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 | 202 |
|---|---|
| Services billed | 353 across 14 procedure codes |
| Paid by Medicare | $23,870 |
Part D prescriptions in 2024
| Prescriptions (claims) | 204 · 327 30-day fills |
|---|---|
| Patients | 64 |
| Total drug cost | $38,016 |
| Generic share | 39% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Optometry |
Medical group
- Cha Medical and Surgical Group PCBakersfield, CA · 11 clinicians
Industry payments (Open Payments)
- 2025$803.56 · 14 payments from 7 companies
- 2024$536.29 · 24 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Coopervision Inc. | $287.15 | 3 |
| Johnson & Johnson Surgical Vision, Inc. | $231.81 | 3 |
| Alcon Vision LLC | $178.61 | 3 |
| Bausch & Lomb Americas Inc. | $42.21 | 2 |
| Sun Pharmaceutical Industries Inc. | $23.87 | 1 |
What the 2025 payments were for
- Food and Beverage$803.56 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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