Michael Damaso De Guzman
NPI 1003278862ActiveIndividual· Ophthalmology· Charleston, SC
Ophthalmology with Simpson Eye Physicians and Surgeons PLLC, practicing in Charleston, South Carolina. In 2024 Medicare paid $369,111 for 826 patients, and Part D covered 3,234 of their prescriptions, 58% of them generic. Alcon Vision LLC was the largest of 11 companies reporting payments in 2025, $1,311 in all, mostly food and beverage. Lists Advocate Sherman Hospital as a hospital affiliation.
Overview
| NPI | 1003278862 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Mar 22, 2016 |
| Last updated in NPPES | Dec 7, 2021 |
| Certified by provider | Dec 7, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 83154 | SC |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Ophthalmology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 826 |
|---|---|
| Services billed | 3,846 across 44 procedure codes |
| Paid by Medicare | $369,111 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,234 · 5,804 30-day fills |
|---|---|
| Patients | 555 |
| Total drug cost | $285,095 |
| Generic share | 58% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Ophthalmology |
Medical group
- Simpson Eye Physicians and Surgeons PLLCWest Dundee, IL · 5 clinicians
Hospital affiliation
- Advocate Sherman HospitalElgin, IL
Industry payments (Open Payments)
- 2025$1,311 · 42 payments from 11 companies
- 2024$2,440 · 46 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $384.86 | 10 |
| New World Medical,inc. | $305.62 | 12 |
| Glaukos Corporation | $246.63 | 4 |
| Abbvie Inc. | $140.62 | 8 |
| Rxsight Inc | $93.59 | 1 |
What the 2025 payments were for
- Food and Beverage$1,311 · 42 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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