Christopher S. Diehl, O.D.
NPI 1053607515ActiveIndividual· Optometrist· Sioux City, IA
Optometrist (O.D.) in Sioux City, Iowa, trained at Illinois College of Optometry at Chicago (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $828,780 for 3,089 claims, against $99,525 paid for services in 2024. Bausch & Lomb Americas Inc. was the largest of 7 companies reporting payments in 2025, $473.32 in all, mostly food and beverage.
Overview
| NPI | 1053607515 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | No |
| NPI issued | Jun 23, 2011 |
| Last updated in NPPES | Oct 4, 2021 |
| Certified by provider | Oct 4, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 002527 | IA |
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 (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 557 |
|---|---|
| Services billed | 1,889 across 24 procedure codes |
| Paid by Medicare | $99,525 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,089 · 5,217 30-day fills |
|---|---|
| Patients | 479 |
| Total drug cost | $828,780 |
| Generic share | 70% of claims |
Education and affiliations
| Medical school | Illinois College of Optometry at Chicago |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Optometry |
Medical group
- Jones Eye Center PCSioux City, IA · 3 clinicians
Hospital affiliation
- St Lukes Regional Medical CenterSioux City, IA
Industry payments (Open Payments)
- 2025$473.32 · 19 payments from 7 companies
- 2024$543.35 · 36 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bausch & Lomb Americas Inc. | $182.31 | 8 |
| Tarsus Pharmaceuticals, Inc. | $101.09 | 1 |
| Amgen Inc. | $64.69 | 3 |
| Abbvie Inc. | $48.46 | 3 |
| Biotissue Holdings Inc. | $38.84 | 2 |
What the 2025 payments were for
- Food and Beverage$473.32 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 33 optometrists in Sioux City · All optometrists in Iowa