Calvin Tan, O.D.
NPI 1043507643ActiveIndividual· Optometrist· Pasadena, CA
Optometrist (O.D.) in Pasadena, California, trained at State University of New York - State College Optometry (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $3,405 for 58 claims, against $694.70 paid for services in 2024.
Overview
| NPI | 1043507643 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 3, 2011 |
| Last updated in NPPES | Oct 24, 2021 |
| Certified by provider | Oct 24, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 14313TLG | 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 | 13 |
|---|---|
| Services billed | 13 across 3 procedure codes |
| Paid by Medicare | $694.70 |
Part D prescriptions in 2024
| Prescriptions (claims) | 58 · 78 30-day fills |
|---|---|
| Patients | 19 |
| Total drug cost | $3,405 |
| Generic share | 47% of claims |
Education and affiliations
| Medical school | State University of New York - State College Optometry |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Optometry |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 100 optometrists in Pasadena · All optometrists in California