Felix Chau, M.D.
NPI 1649458878 · Ophthalmology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Felix Chau, M.D. is a Ophthalmology Physician provider in Chicago, IL (NPI 1649458878).
Provider details
- NPI number
- 1649458878
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 127918 (NC)
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
18 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
1,044 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 | 437 | $24 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 339 | $66 |
| Injection of Drug Into Eye67028 | 99 | $103 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 80 | $98 |
| 2d Ultrasound Scan of Eye Tissue and Structures76512 | 57 | $38 |
| Photography of the Retina92250 | 21 | $20 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 89 | 30 |
| Ketorolac Tromethamine | 51 | 15 |
| Timolol Maleate | 27 | 13 |
| Brimonidine Tartrate | 24 | 13 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 20 | 11 |
| Dorzolamide Hcl | 18 | — |
| Erythromycin Basebrand: Erythromycin | 16 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$67 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
- 2008-02-11
- Last updated
- 2013-04-02
Frequently asked questions
- What is Felix Chau's NPI number?
- Felix Chau's National Provider Identifier (NPI) is 1649458878, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Felix Chau's specialty?
- Felix Chau is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Felix Chau located?
- Felix Chau's practice location on file with NPPES is 1855 W Taylor St, Chicago, IL 60612-7242.
- What is Felix Chau's phone number?
- The practice phone number listed in the NPPES registry for Felix Chau is (847) 345-3179.
- Does Felix Chau accept Medicare?
- Felix Chau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Felix Chau's NPI active?
- Yes — Felix Chau's NPI (1649458878) is active in the NPPES registry as of the last update on 2013-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.