Diana Katsman, MD
NPI 1306003132ActiveIndividual· Ophthalmology· Torrance, CA
Ophthalmology (MD) in Torrance, California, trained at University of California, Irvine, California College of Medicine (class of 2008). In 2024 Medicare paid $687,360 for 633 patients, and Part D covered 1,359 of their prescriptions, 39% of them generic. Apellis Pharmaceuticals, Inc. was the largest of 14 companies reporting payments in 2025, $3,494 in all, mostly food and beverage.
Overview
| NPI | 1306003132 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 20, 2008 |
| Last updated in NPPES | Apr 4, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | A112485 | 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 - Ophthalmology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 633 |
|---|---|
| Services billed | 15,961 across 40 procedure codes |
| Paid by Medicare | $687,360 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,359 · 1,647 30-day fills |
|---|---|
| Patients | 269 |
| Total drug cost | $286,555 |
| Generic share | 39% of claims |
Education and affiliations
| Medical school | University of California, Irvine, California College of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Ophthalmology |
Industry payments (Open Payments)
- 2025$3,494 · 42 payments from 14 companies
- 2024$678.30 · 18 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Apellis Pharmaceuticals, Inc. | $1,922 | 5 |
| Bausch & Lomb Americas Inc. | $407.57 | 5 |
| Amgen Inc. | $300.92 | 9 |
| Tarsus Pharmaceuticals, Inc. | $281.79 | 6 |
| Alcon Vision LLC | $178.79 | 4 |
What the 2025 payments were for
- Food and Beverage$1,751 · 40 payments
- Travel and Lodging$1,743 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other ophthalmologists in Torrance
- 1003056516
- 1164721619
- 1265561211
- 1285675629
- 1316007230
- 1326532110
- 1447358791
- 1467541938
- 1497943914
- 1508801028
- 1528402633
- 1568407377
All 55 ophthalmologists in Torrance · All ophthalmologists in California