Daniel Ahn, D.O.
NPI 1932416781ActiveIndividual· Ophthalmology· Sonoma, CA
Ophthalmology (D.O.) in Sonoma, California, trained at New York College of Osteo Medicine of New York Institute of Technology (class of 2008). Their prescriptions cost Medicare Part D more than their services did: $614,502 for 3,993 claims, against $370,633 paid for services in 2024. Alcon Vision LLC was the largest of 11 companies reporting payments in 2025, $2,885 in all, mostly food and beverage.
Overview
| NPI | 1932416781 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Aug 31, 2010 |
| Last updated in NPPES | Jul 31, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 20A12253 | CA |
| Ophthalmology | 207W00000X | OT012630 | PA |
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 (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 934 |
|---|---|
| Services billed | 4,384 across 40 procedure codes |
| Paid by Medicare | $370,633 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,993 · 5,096 30-day fills |
|---|---|
| Patients | 869 |
| Total drug cost | $614,502 |
| Generic share | 51% of claims |
Education and affiliations
| Medical school | New York College of Osteo Medicine of New York Institute of Technology |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Ophthalmology |
Medical group
- Horizon Medical Group PCGoshen, NY · 75 clinicians
Hospital affiliation
- Montefiore St Luke's CornwallNewburgh, NY
Industry payments (Open Payments)
- 2025$2,885 · 68 payments from 11 companies
- 2024$1,635 · 49 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $1,337 | 23 |
| Bausch & Lomb Americas Inc. | $598.90 | 15 |
| Abbvie Inc. | $421.32 | 15 |
| Globus Medical, Inc. | $147.59 | 1 |
| Sun Pharmaceutical Industries Inc. | $103.62 | 4 |
What the 2025 payments were for
- Food and Beverage$2,885 · 68 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Ophthalmology providers in Sonoma
- 1396939682
- 1710163324
- 1922323708
- 1558437152
- 1275581126