Nelson Winkler, M.D.
NPI 1740669944 · Ophthalmology Physician · Marquette, MI
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nelson Winkler, M.D. is a Ophthalmology Physician provider in Marquette, MI (NPI 1740669944).
Provider details
- NPI number
- 1740669944
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 60961 (MN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 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
2,869 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) |
|---|---|---|
| Imaging of Retina92134 | 621 | $37 |
| Injection of Drug Into Eye67028 | 481 | $120 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 415 | $23 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 318 | $411 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 198 | $159 |
| Established Patient Complete Exam of Visual System92014 | 171 | $117 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 273 | 166 |
| Latanoprost | 270 | 89 |
| Ketorolac Tromethamine | 212 | 142 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 188 | 74 |
| Ofloxacin | 162 | 130 |
| Timolol Maleate | 84 | 29 |
| Brimonidine Tartrate | 80 | 29 |
| Netarsudil Mesylat/Latanoprost |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$103 across 2 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
- 2015-05-21
- Last updated
- 2021-08-05
- Certified
- 2021-03-01
Frequently asked questions
- What is Nelson Winkler's NPI number?
- Nelson Winkler's National Provider Identifier (NPI) is 1740669944, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nelson Winkler's specialty?
- Nelson Winkler is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Nelson Winkler located?
- Nelson Winkler's practice location on file with NPPES is 1414 W Fair Ave Ste 347, Marquette, MI 49855-5407.
- What is Nelson Winkler's phone number?
- The practice phone number listed in the NPPES registry for Nelson Winkler is (906) 205-2125.
- Does Nelson Winkler accept Medicare?
- Nelson Winkler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nelson Winkler's NPI active?
- Yes — Nelson Winkler's NPI (1740669944) is active in the NPPES registry as of the last update on 2021-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.