Chien Ou, MD
NPI 1790916385 · Ophthalmology Physician · Lewisburg, PA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chien Ou, MD is a Ophthalmology Physician provider in Lewisburg, PA (NPI 1790916385).
Provider details
- NPI number
- 1790916385
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD448876 (PA)
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
16 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
3,466 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 | 1,160 | $120 |
| Imaging of Retina92134 | 407 | $38 |
| Established Patient Problem Focused Exam of Visual System92012 | 396 | $85 |
| Imaging of Optic Nerve92133 | 383 | $34 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 279 | $498 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 211 | $42 |
| Exam of Visual Field With Extended Testing |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 846 | 256 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 345 | 102 |
| Brimonidine Tartrate | 277 | 82 |
| Prednisolone Acetate | 273 | 197 |
| Timolol Maleate | 271 | 106 |
| Ofloxacin | 195 | 156 |
| Netarsudil Mesylatebrand: Rhopressa | 130 | 37 |
| Dorzolamide Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$378 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
- 2009-07-31
- Last updated
- 2026-02-10
- Certified
- 2026-02-10
Frequently asked questions
- What is Chien Ou's NPI number?
- Chien Ou's National Provider Identifier (NPI) is 1790916385, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chien Ou's specialty?
- Chien Ou is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Chien Ou located?
- Chien Ou's practice location on file with NPPES is 137 Jpm Rd, Lewisburg, PA 17837-9313.
- What is Chien Ou's phone number?
- The practice phone number listed in the NPPES registry for Chien Ou is (866) 995-3937.
- Does Chien Ou accept Medicare?
- Chien Ou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chien Ou's NPI active?
- Yes — Chien Ou's NPI (1790916385) is active in the NPPES registry as of the last update on 2026-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.