Gregory Nelson
NPI 1043221351 · Ophthalmology Physician · Arlington Heights, IL
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Nelson is a Ophthalmology Physician provider in Arlington Heights, IL (NPI 1043221351).
Provider details
- NPI number
- 1043221351
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 036095140 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
6,150 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,535 | $132 |
| Established Patient Complete Exam of Visual System92014 | 1,130 | $127 |
| Exam of Visual Field With Extended Testing92083 | 798 | $64 |
| Imaging of Optic Nerve92133 | 713 | $36 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 507 | $26 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 417 | $538 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 1,835 | 530 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 762 | 215 |
| Timolol Maleate | 385 | 133 |
| Brimonidine Tartrate | 337 | 111 |
| Bimatoprostbrand: Lumigan | 304 | 88 |
| Dorzolamide Hcl | 179 | 62 |
| Brimonidine Tartrate/Timololbrand: Combigan | 123 | 37 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$781 across 32 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
- 2006-08-11
- Last updated
- 2008-03-05
Frequently asked questions
- What is Gregory Nelson's NPI number?
- Gregory Nelson's National Provider Identifier (NPI) is 1043221351, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Nelson's specialty?
- Gregory Nelson is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Nelson located?
- Gregory Nelson's practice location on file with NPPES is 1100 W Central Rd, Arlington Heights, IL 60005-2402.
- What is Gregory Nelson's phone number?
- The practice phone number listed in the NPPES registry for Gregory Nelson is (847) 253-4040.
- Does Gregory Nelson accept Medicare?
- Gregory Nelson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Nelson's NPI active?
- Yes — Gregory Nelson's NPI (1043221351) is active in the NPPES registry as of the last update on 2008-03-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.