John Hwang, MD
NPI 1629235510 · Retina Specialist (Ophthalmology) Physician · Laguna Hills, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Hwang, MD is a Retina Specialist (Ophthalmology) Physician provider in Laguna Hills, CA (NPI 1629235510).
Provider details
- NPI number
- 1629235510
- Entity type
- Individual
- Primary specialty
- Retina Specialist (Ophthalmology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A112582 (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
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
8,267 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 | 2,578 | $47 |
| Injection of Drug Into Eye67028 | 1,577 | $130 |
| Extended Exam of the Back Part of the Eye With Optic Nerve Drawing92202 | 1,384 | $18 |
| Established Patient Problem Focused Exam of Visual System92012 | 824 | $105 |
| Established Patient Complete Exam of Visual System92014 | 683 | $147 |
| Compounded Drug, Not Otherwise ClassifiedJ7999 | 362 | $93 |
| Extended Exam of the Back Part of the Eye With Retinal Drawing |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 230 | 111 |
| Ketorolac Tromethamine | 151 | 71 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 29 | — |
| Tobramycin/Dexamethasonebrand: Tobramycin-Dexamethasone | 27 | 27 |
| Atropine Sulfate | 18 | — |
| Brimonidine Tartrate | 16 | — |
| Ofloxacin | 14 | — |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$295 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
- 2008-05-19
- Last updated
- 2017-03-27
Frequently asked questions
- What is John Hwang's NPI number?
- John Hwang's National Provider Identifier (NPI) is 1629235510, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hwang's specialty?
- John Hwang is listed in the NPPES registry with a primary specialty of Retina Specialist (Ophthalmology) Physician (Allopathic & Osteopathic Physicians).
- Where is John Hwang located?
- John Hwang's practice location on file with NPPES is 23521 Paseo De Valencia, Laguna Hills, CA 92653-3107.
- What is John Hwang's phone number?
- The practice phone number listed in the NPPES registry for John Hwang is (949) 707-5125.
- Does John Hwang accept Medicare?
- John Hwang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Hwang's NPI active?
- Yes — John Hwang's NPI (1629235510) is active in the NPPES registry as of the last update on 2017-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.