Christopher Diehl, O.D.
NPI 1053607515 · Optometrist · Sioux City, IA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Diehl, O.D. is a Optometrist provider in Sioux City, IA (NPI 1053607515).
Provider details
- NPI number
- 1053607515
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 002527 (IA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,831 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 913 | $84 |
| Exam of Visual Field With Extended Testing92083 | 276 | $58 |
| Imaging of Optic Nerve92133 | 260 | $32 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 134 | $119 |
| Imaging of Retina92134 | 62 | $37 |
| Established Patient Complete Exam of Visual System92014 | 53 | $117 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 804 | 187 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 418 | 99 |
| Timolol Maleate | 300 | 85 |
| Bimatoprostbrand: Lumigan | 258 | 46 |
| Brimonidine Tartrate | 258 | 61 |
| Dorzolamide Hcl | 122 | 33 |
| Cyclosporinebrand: Restasis | 86 | 32 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$543 across 36 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-06-23
- Last updated
- 2021-10-04
- Certified
- 2021-10-04
Frequently asked questions
- What is Christopher Diehl's NPI number?
- Christopher Diehl's National Provider Identifier (NPI) is 1053607515, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Diehl's specialty?
- Christopher Diehl is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Christopher Diehl located?
- Christopher Diehl's practice location on file with NPPES is 4405 Hamilton Blvd, Sioux City, IA 51104-1140.
- What is Christopher Diehl's phone number?
- The practice phone number listed in the NPPES registry for Christopher Diehl is (712) 239-3937.
- Does Christopher Diehl accept Medicare?
- Christopher Diehl is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Diehl's NPI active?
- Yes — Christopher Diehl's NPI (1053607515) is active in the NPPES registry as of the last update on 2021-10-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.