Dr. Samuel Liu, M.D.
What this data tells you about Dr. Liu
Dr. Samuel Liu is an ophthalmology specialist in Princeton, NJ, with 19 years of NPI registration. Based on federal Medicare data, Dr. Liu performed 7,632 Medicare services across 3,194 unique beneficiaries.
Between the years covered by Open Payments, Dr. Liu received a total of $851 from 12 pharmaceutical and/or device companies across 31 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in ophthalmology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Liu is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Aflibercept eye injection (Eylea) | 1,968 | $687 | $1,200 |
| Eye injection for retinal disease A procedure involving the administration of medication directly into the eye. |
1,189 | $97 | $375 |
| Comprehensive eye exam, established patient A comprehensive examination of the visual system performed for a patient who has previously been seen by the provider. |
1,041 | $95 | $170 |
| Eye exam, established patient, focused A limited examination of the visual system for an existing patient. The provider focuses on a specific eye-related concern or symptom. |
769 | $75 | $140 |
| Retinal imaging (OCT scan) This procedure involves imaging the retina to visualize its structure. It is used to examine the back of the eye. |
749 | $34 | $120 |
| Pegcetacoplan intravitreal injection, 1 mg An injection of pegcetacoplan administered into the vitreous humor of the eye. The dose specified is 1 milligram. |
330 | $120 | $367 |
| Retinal photography (fundus photo) This procedure involves taking photographs of the retina, the light-sensitive tissue at the back of the eye. It is used to document the condition of the eye's interior structures. |
300 | $29 | $130 |
| Corneal topography and eye depth measurement This procedure measures the curvature and depth of the cornea, the clear front surface of the eye. |
282 | $21 | $150 |
| Insertion of drug delivery implant into tear duct A small implant containing medication is placed into the tear duct of the eye to deliver drugs directly to the eye over time. |
158 | $14 | $82 |
| Cataract surgery with lens implant Surgical removal of the clouded natural lens of the eye and replacement with an artificial prosthetic lens to restore vision. |
152 | $472 | $2,618 |
| Bevacizumab injection, 10 mg Administration of a 10 mg dose of bevacizumab medication via injection. |
151 | $50 | $95 |
| Comprehensive eye exam, new patient A comprehensive examination of the visual system performed for a new patient. |
137 | $113 | $225 |
| Visual field test, extended A test that maps your complete field of vision to detect blind spots or peripheral vision loss. Extended testing provides a more detailed assessment than a standard visual field exam. |
98 | $49 | $140 |
| Optic nerve imaging (OCT scan) Imaging of the optic nerve. |
96 | $27 | $120 |
| Office visit for established patient An office visit for an existing patient that may not require the healthcare professional to be present. |
64 | $18 | $45 |
| Laser removal of recurring cataract A laser procedure to remove a recurring cataract within the lens capsule. |
62 | $266 | $975 |
| Extended exam of back of eye with optic nerve drawing A detailed examination of the posterior section of the eye, including the optic nerve, with documentation through drawing. |
55 | $12 | $120 |
| Unclassified drug A medication that does not fit into standard HCPCS or CPT classification categories. |
16 | $1,768 | $5,500 |
| Complex cataract removal with lens implant A surgical procedure to remove a cataract from the eye and insert an artificial lens to restore vision. |
15 | $639 | $2,900 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
4.3 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Liu is a mixed practice specialist, with above-average Medicare volume (top 12% in NJ), with low-engagement industry engagement, with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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