Nicholas Tosi, MD
NPI 1891924650 · Retina Specialist (Ophthalmology) Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicholas Tosi, MD is a Retina Specialist (Ophthalmology) Physician provider in Milwaukee, WI (NPI 1891924650).
Provider details
- NPI number
- 1891924650
- Entity type
- Individual
- Primary specialty
- Retina Specialist (Ophthalmology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 63729 (WI)
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
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
9,995 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 | 4,341 | $39 |
| Injection of Drug Into Eye67028 | 3,705 | $126 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,333 | $125 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 157 | $163 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 119 | $87 |
| Photography of the Retina92250 | 108 | $35 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 469 | 243 |
| Latanoprost | 289 | 100 |
| Ondansetronbrand: Ondansetron Odt | 156 | 149 |
| Ketorolac Tromethamine | 151 | 52 |
| Brimonidine Tartrate | 125 | 58 |
| Timolol Maleate | 90 | 41 |
| Bromfenac Sodiumbrand: Prolensa | 48 | 23 |
| Bromfenac Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$677 across 7 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
Additional practice locations (3)
- 6815 118th AveKenosha, WI 53142-8420Phone: (262) 857-5650
- 2801 W Kinnickinnic River Pkwy Ste 350Milwaukee, WI 53215-3695Phone: (414) 649-4660
- 1111 Delafield St Ste 227Waukesha, WI 53188-3400Phone: (262) 524-9215
Registry dates
- Enumerated
- 2009-07-14
- Last updated
- 2023-03-07
- Certified
- 2021-06-23
Frequently asked questions
- What is Nicholas Tosi's NPI number?
- Nicholas Tosi's National Provider Identifier (NPI) is 1891924650, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Tosi's specialty?
- Nicholas Tosi is listed in the NPPES registry with a primary specialty of Retina Specialist (Ophthalmology) Physician (Allopathic & Osteopathic Physicians).
- Where is Nicholas Tosi located?
- Nicholas Tosi's practice location on file with NPPES is 2600 N Mayfair Rd Ste 901, Milwaukee, WI 53226-1307.
- What is Nicholas Tosi's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Tosi is (414) 774-3484.
- Does Nicholas Tosi accept Medicare?
- Nicholas Tosi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicholas Tosi's NPI active?
- Yes — Nicholas Tosi's NPI (1891924650) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.