Diane Towako Siegel, MD
NPI 1316443914ActiveIndividual· Ophthalmology· Longmont, CO
Ophthalmology (MD) in Longmont, Colorado, trained at Emory University School of Medicine (class of 2018). In 2024 Medicare paid $131,757 for 487 patients, and Part D covered 760 of their prescriptions, 47% of them generic. Harrow Eye, LLC was the largest of 9 companies reporting payments in 2025, $547.86 in all, mostly food and beverage.
Overview
| NPI | 1316443914 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 3, 2018 |
| Last updated in NPPES | Jun 28, 2023 |
| Certified by provider | Jun 28, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | DR.0068751 | CO |
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 (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 487 |
|---|---|
| Services billed | 1,335 across 37 procedure codes |
| Paid by Medicare | $131,757 |
Part D prescriptions in 2024
| Prescriptions (claims) | 760 · 1,178 30-day fills |
|---|---|
| Patients | 377 |
| Total drug cost | $166,653 |
| Generic share | 47% of claims |
Education and affiliations
| Medical school | Emory University School of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Ophthalmology |
Medical group
- Eye Care Center of Northern Colorado, PCLongmont, CO · 16 clinicians
Hospital affiliations
- Longmont United HospitalLongmont, CO
- Longs Peak HospitalLongmont, CO
Industry payments (Open Payments)
- 2025$547.86 · 17 payments from 9 companies
- 2024$361.10 · 12 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Harrow Eye, LLC | $287.04 | 5 |
| Mallinckrodt Hospital Products Inc. | $80.23 | 4 |
| Rxsight Inc | $61.38 | 2 |
| Bausch & Lomb Americas Inc. | $24.49 | 1 |
| Biotissue Holdings Inc. | $23.71 | 1 |
What the 2025 payments were for
- Food and Beverage$547.86 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Ophthalmology providers in Longmont
- 1174555718
- 1134318421
- 1740314483
- 1881961316
- 1467534743
- 1396182127
- 1255825378
- 1235189143
- 1780077685
- 1083659338
- 1144307901
- 1932113578