David Hammes, O.D.
NPI 1588745756 · Corneal and Contact Management Optometrist · Fond Du Lac, WI
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Hammes, O.D. is a Corneal and Contact Management Optometrist provider in Fond Du Lac, WI (NPI 1588745756).
Provider details
- NPI number
- 1588745756
- Entity type
- Individual
- Primary specialty
- Corneal and Contact Management OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2976-035 (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 tenure25% of score
19 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
3,851 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) |
|---|---|---|
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 3,505 | $1 |
| Established Patient Complete Exam of Visual System92014 | 232 | $122 |
| Imaging of Optic Nerve92133 | 38 | $33 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 36 | $88 |
| Exam of Visual Field With Extended Testing92083 | 29 | $62 |
| Imaging of Retina92134 | 11 | $39 |
Typical Medicare-allowed amounts for these services range $1–$122 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 204 | 61 |
| Timolol Maleate | 69 | 21 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 44 | 16 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 29 | 24 |
| Bimatoprostbrand: Lumigan | 25 | — |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 23 | — |
| Brimonidine Tartrate/Timololbrand: Combigan |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$667 across 25 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
- 2006-10-17
- Last updated
- 2008-11-26
Frequently asked questions
- What is David Hammes's NPI number?
- David Hammes's National Provider Identifier (NPI) is 1588745756, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Hammes's specialty?
- David Hammes is listed in the NPPES registry with a primary specialty of Corneal and Contact Management Optometrist (Eye and Vision Services Providers).
- Where is David Hammes located?
- David Hammes's practice location on file with NPPES is 355 N Peters Ave, Fond Du Lac, WI 54935-8258.
- What is David Hammes's phone number?
- The practice phone number listed in the NPPES registry for David Hammes is (920) 922-7121.
- Does David Hammes accept Medicare?
- David Hammes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Hammes's NPI active?
- Yes — David Hammes's NPI (1588745756) is active in the NPPES registry as of the last update on 2008-11-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.