Dr. David Liu, PA-C
What this data tells you about Dr. Liu
Dr. David Liu is an orthopedic surgery specialist in Fremont, CA, with 12 years of NPI registration. Based on federal Medicare data, Dr. Liu performed 1,355 Medicare services across 1,228 unique beneficiaries.
Between the years covered by Open Payments, Dr. Liu received a total of $420 from 7 pharmaceutical and/or device companies across 10 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in orthopedic surgery. 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 |
|---|---|---|---|
| Knee X-ray, 3 views An X-ray imaging test of the knee joint that captures three different angles to evaluate the bones and surrounding structures. |
451 | $7 | $31 |
| Hip X-ray, 1 view An X-ray image of the hip joint taken from a single angle to visualize the bones and surrounding structures. |
150 | $7 | $31 |
| X-ray for bone length assessment An X-ray image is taken to measure and evaluate the length of bones. |
145 | $10 | $150 |
| Knee X-ray, 1-2 views An X-ray imaging test of the knee joint using one to two different angles to visualize the bones and surrounding structures. |
136 | $6 | $26 |
| Telephone medical discussion, 5-10 minutes A phone conversation with a physician lasting between 5 and 10 minutes to discuss medical matters. |
76 | $27 | $80 |
| Knee X-ray, 4 or more views An imaging test using X-rays to create multiple pictures of the knee joint from different angles. |
64 | $9 | $39 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
61 | $72 | $180 |
| Virtual check-in for established patient A brief communication service provided by a qualified healthcare professional to an established patient via technology, such as a virtual check-in. |
50 | $10 | $50 |
| Hip X-ray, 2-3 views An X-ray imaging test of the hip joint using two to three different angles to visualize the bones and surrounding structures. |
43 | $8 | $35 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
41 | $37 | $337 |
| X-ray of both hips, 2 views An X-ray imaging test that captures two views of both hip joints to evaluate bone structure and alignment. |
41 | $8 | $40 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
40 | $103 | $220 |
| Pelvis X-ray, 1-2 views An X-ray imaging test of the pelvic area using one to two different angles to visualize the bones and joints. |
38 | $7 | $31 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
19 | $63 | $320 |
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 (2023-2024) ›
Associated products mentioned in payments ›
Most payments (71%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
0.0 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 moderate Medicare volume, with low-engagement industry engagement.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Liu experienced with knee x-ray, 3 views?
Does Dr. Liu receive payments from pharmaceutical companies?
How do Dr. Liu's costs compare to other orthopedic surgeons in Fremont?
What does Data Coverage mean?
Is this data up to date?
Explore related providers
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology