John Purdue, OD
NPI 1467456830 · Optometrist · Onalaska, WI
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1467456830
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- No
- License
- 1826 (WI)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
4,535 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 3,616 | $1 |
| Established Patient Complete Exam of Visual System92014 | 407 | $71 |
| Established Patient Problem Focused Exam of Visual System92012 | 104 | $47 |
| Imaging of Retina92134 | 104 | $23 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 103 | $61 |
| Exam of Visual Field With Extended Testing92083 | 86 | $25 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 618 | 122 |
| Timolol Maleate | 82 | 18 |
| Ofloxacin | 31 | 27 |
| Prednisolone Acetate | 31 | 22 |
| Travoprost | 21 | — |
| Brimonidine Tartrate | 19 | — |
| Brimonidine Tartratebrand: Alphagan P | 12 | — |
| Valacyclovir Hclbrand: Valacyclovir | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-13
- Last updated
- 2015-04-24
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.