Irving Gan, O.D.
NPI 1679792683ActiveIndividual· Optometrist· Frederick, MD
Optometrist (O.D.) in Frederick, Maryland, trained at Pennsylvania College of Optometry (class of 1997). Medicare paid $1,069 for services to 11 patients in 2024. Sun Pharmaceutical Industries Inc. was the largest of 3 companies reporting payments in 2025, $280.83 in all, mostly food and beverage.
Overview
| NPI | 1679792683 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | No |
| NPI issued | Apr 25, 2007 |
| Last updated in NPPES | May 27, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | TA1469 | MD |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Optometry (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 11 |
|---|---|
| Services billed | 18 across 8 procedure codes |
| Paid by Medicare | $1,069 |
Education and affiliations
| Medical school | Pennsylvania College of Optometry |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Optometry |
Industry payments (Open Payments)
- 2025$280.83 · 4 payments from 3 companies
- 2024$121.45 · 5 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sun Pharmaceutical Industries Inc. | $138.80 | 2 |
| Tarsus Pharmaceuticals, Inc. | $121.84 | 1 |
| Coopervision Inc. | $20.19 | 1 |
What the 2025 payments were for
- Food and Beverage$280.83 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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