Wonkyu Pak, M.D.
NPI 1376542894 · Ophthalmology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Wonkyu Pak, M.D. is a Ophthalmology Physician provider in Los Angeles, CA (NPI 1376542894).
Provider details
- NPI number
- 1376542894
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G59023 (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
20 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
1,717 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 Problem Focused Exam of Visual System92012 | 460 | $101 |
| Established Patient Complete Exam of Visual System92014 | 303 | $142 |
| Imaging of Retina92134 | 234 | $45 |
| Exam of Visual Field With Extended Testing92083 | 197 | $73 |
| Imaging of Optic Nerve92133 | 196 | $38 |
| Injection of Drug Into Eye67028 | 69 | $125 |
| Compounded Drug, Not Otherwise ClassifiedJ7999 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 2,904 | 567 |
| Cyclosporinebrand: Restasis | 1,291 | 315 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 1,004 | 262 |
| Cyclosporine | 509 | 201 |
| Brimonidine Tartrate | 457 | 109 |
| Timolol Maleate | 448 | 113 |
| Prednisolone Acetate | 343 | 185 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$357 across 17 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
- 2005-07-18
- Last updated
- 2022-06-28
- Certified
- 2022-06-28
Frequently asked questions
- What is Wonkyu Pak's NPI number?
- Wonkyu Pak's National Provider Identifier (NPI) is 1376542894, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Wonkyu Pak's specialty?
- Wonkyu Pak is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Wonkyu Pak located?
- Wonkyu Pak's practice location on file with NPPES is 266 S Harvard Blvd, Los Angeles, CA 90004-4372.
- What is Wonkyu Pak's phone number?
- The practice phone number listed in the NPPES registry for Wonkyu Pak is (213) 739-6900.
- Does Wonkyu Pak accept Medicare?
- Wonkyu Pak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Wonkyu Pak's NPI active?
- Yes — Wonkyu Pak's NPI (1376542894) is active in the NPPES registry as of the last update on 2022-06-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.