Nga Yan Siu, DO
NPI 1902284169 · Ophthalmology Physician · Southampton, NY
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nga Yan Siu, DO is a Ophthalmology Physician provider in Southampton, NY (NPI 1902284169).
Provider details
- NPI number
- 1902284169
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 25MB11046700 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,610 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 | 679 | $103 |
| Imaging of Optic Nerve92133 | 518 | $31 |
| Exam of the Internal Drainage System of Eye92020 | 508 | $31 |
| Exam of Visual Field With Extended Testing92083 | 496 | $74 |
| Established Patient Complete Exam of Visual System92014 | 473 | $144 |
| New Patient Complete Exam of Visual System92004 | 225 | $170 |
| Ultrasound Scan of Cornea to Determine Thickness |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 453 | 161 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 316 | 107 |
| Brimonidine Tartrate | 202 | 81 |
| Timolol Maleate | 149 | 57 |
| Cyclosporinebrand: Restasis | 111 | 60 |
| Netarsudil Mesylat/Latanoprostbrand: Rocklatan | 105 | 35 |
| Brinzolamide/Brimonidine Tartbrand: Simbrinza | 94 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$439 across 13 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
Additional practice locations (1)
- 1 N Washington AveBergenfield, NJ 07621-2125Phone: (201) 374-8900
Registry dates
- Enumerated
- 2015-05-08
- Last updated
- 2022-12-08
- Certified
- 2022-12-08
Frequently asked questions
- What is Nga Yan Siu's NPI number?
- Nga Yan Siu's National Provider Identifier (NPI) is 1902284169, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nga Yan Siu's specialty?
- Nga Yan Siu is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Nga Yan Siu located?
- Nga Yan Siu's practice location on file with NPPES is 67 Hampton Rd, Southampton, NY 11968-4962.
- What is Nga Yan Siu's phone number?
- The practice phone number listed in the NPPES registry for Nga Yan Siu is (631) 444-4796.
- Does Nga Yan Siu accept Medicare?
- Nga Yan Siu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nga Yan Siu's NPI active?
- Yes — Nga Yan Siu's NPI (1902284169) is active in the NPPES registry as of the last update on 2022-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.