Ivan Hwang, MD
NPI 1023152378 · Ophthalmology Physician · Antioch, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ivan Hwang, MD is a Ophthalmology Physician provider in Antioch, CA (NPI 1023152378).
Provider details
- NPI number
- 1023152378
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A68304 (CA)
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
3,846 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 Complete Exam of Visual System92014 | 709 | $159 |
| Established Patient Problem Focused Exam of Visual System92012 | 677 | $113 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 502 | $70 |
| Exam of Visual Field With Extended Testing92083 | 206 | $82 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 206 | $58 |
| Ct Scan of Cornea92025 | 204 | $45 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 432 | 202 |
| Ofloxacin | 353 | 198 |
| Bacitracin/Polymyxin B Sulfatebrand: Bacitracin-Polymyxin | 322 | 191 |
| Latanoprost | 211 | 79 |
| Erythromycin Basebrand: Erythromycin | 135 | 96 |
| Timolol Maleate | 62 | 20 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 56 | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$338 across 11 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
- 2007-02-19
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ivan Hwang's NPI number?
- Ivan Hwang's National Provider Identifier (NPI) is 1023152378, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ivan Hwang's specialty?
- Ivan Hwang is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Ivan Hwang located?
- Ivan Hwang's practice location on file with NPPES is 3747 Sunset Ln, Antioch, CA 94509-6101.
- What is Ivan Hwang's phone number?
- The practice phone number listed in the NPPES registry for Ivan Hwang is (925) 754-2300.
- Does Ivan Hwang accept Medicare?
- Ivan Hwang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ivan Hwang's NPI active?
- Yes — Ivan Hwang's NPI (1023152378) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.