John Chu, MD
NPI 1548285844 · Ophthalmology Physician · Aurora, IL
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Chu, MD is a Ophthalmology Physician provider in Aurora, IL (NPI 1548285844).
Provider details
- NPI number
- 1548285844
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036-097799 (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
2,861 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 | 594 | $131 |
| Established Patient Complete Exam of Visual System92014 | 466 | $127 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 362 | $38 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 345 | $529 |
| Imaging of Retina92134 | 290 | $41 |
| Imaging of Optic Nerve92133 | 260 | $37 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 2,038 | 494 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 837 | 219 |
| Brimonidine Tartrate | 519 | 127 |
| Timolol Maleate | 409 | 119 |
| Prednisolone Acetate | 217 | 139 |
| Dorzolamide Hcl | 146 | 45 |
| Ketorolac Tromethamine | 140 | 77 |
| Netarsudil Mesylate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$89 across 4 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
- 2006-07-13
- Last updated
- 2021-11-22
- Certified
- 2021-11-22
Frequently asked questions
- What is John Chu's NPI number?
- John Chu's National Provider Identifier (NPI) is 1548285844, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Chu's specialty?
- John Chu is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is John Chu located?
- John Chu's practice location on file with NPPES is 1221 N Highland Ave, Aurora, IL 60506-1404.
- What is John Chu's phone number?
- The practice phone number listed in the NPPES registry for John Chu is (630) 859-8700.
- Does John Chu accept Medicare?
- John Chu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Chu's NPI active?
- Yes — John Chu's NPI (1548285844) is active in the NPPES registry as of the last update on 2021-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.