Medicare Enrolled
Dr. Joseph Chen, M.D.
Ophthalmology · Westlake Village, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Chen from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Chen
Dr. Joseph Chen is an ophthalmology specialist in Westlake Village, CA, with 15 years of NPI registration. Based on federal Medicare data, Dr. Chen performed 3,000 Medicare services across 2,243 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chen received a total of $11,600 from 37 pharmaceutical and/or device companies across 346 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. Chen 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.
✓ 15 years in practice
▲ Top 33% volume in CA
$11,600 industry payments
Medicare Practice Summary
Medicare Utilization ↗3,000
Medicare services
Top 33% in CA for ophthalmology
2,243
Unique beneficiaries
$98
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~200 Medicare services per year of practice
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 |
|---|---|---|---|
| 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. |
870 | $69 | $403 |
| 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. |
505 | $101 | $462 |
| 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. |
314 | $44 | $201 |
| Optic nerve imaging (OCT scan) Imaging of the optic nerve. |
264 | $30 | $162 |
| Retinal imaging (OCT scan) This procedure involves imaging the retina to visualize its structure. It is used to examine the back of the eye. |
198 | $33 | $173 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
187 | $124 | $591 |
| 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. |
168 | $416 | $5,294 |
| Corneal topography and eye depth measurement This procedure measures the curvature and depth of the cornea, the clear front surface of the eye. |
160 | $39 | $344 |
| Ultrasound scan of cornea to determine thickness An ultrasound procedure used to measure the thickness of the cornea. |
90 | $9 | $89 |
| 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. |
56 | $80 | $477 |
| Comprehensive eye exam, established patient A comprehensive examination of the visual system performed for a patient who has previously been seen by the provider. |
39 | $93 | $283 |
| Dilation of eye fluid drainage A procedure to widen the drainage pathways in the eye to help fluid flow out more easily. |
33 | $352 | $2,950 |
| 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. |
30 | $30 | $200 |
| Eye fluid drainage device insertion A surgical procedure to insert a device into the eye to help drain excess fluid and reduce pressure. |
21 | $898 | $4,172 |
| Comprehensive eye exam, new patient A comprehensive examination of the visual system performed for a new patient. |
18 | $112 | $334 |
| Laser removal of recurring cataract A laser procedure to remove a recurring cataract within the lens capsule. |
16 | $302 | $1,843 |
| Cataract removal with artificial lens and drainage device insertion Surgical removal of the eye's natural lens followed by the insertion of an artificial lens and a drainage device into the front chamber of the eye. |
16 | $529 | $8,000 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
15 | $43 | $191 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
5.6% high complexity
18.4% medium
76.0% routine
Industry Payment Transparency
Open Payments through 2024 ↗$11,600
Total received (2018-2024)
Avg $1,657/year across 7 years
Top 13% in CA for ophthalmology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
37
Companies
346
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$11,450 (98.7%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$150 (1.3%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$2,471
2023
$1,953
2022
$2,941
2021
$1,336
2020
$537
2019
$992
2018
$1,371
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABBVIE INC.
$436
Alcon Vision LLC
$394
Bausch & Lomb Americas Inc.
$379
Sight Sciences, Inc.
$371
Glaukos Corporation
$250
Nova Eye, Inc.
$139
Amgen Inc.
$131
SUN PHARMACEUTICAL INDUSTRIES INC.
$64
Rayner Intraocular Lenses Limited
$59
BIOTISSUE HOLDINGS INC.
$46
Tarsus Pharmaceuticals, Inc.
$38
Oyster Point Pharma, Inc.
$38
Johnson & Johnson Surgical Vision, Inc.
$37
Mallinckrodt Hospital Products Inc.
$29
RxSight Inc
$24
Thea Pharma Inc.
$20
Optos, Inc.
$17
Top 3 companies account for 48.9% of 2024 payments
All-time payments by company (2018-2024) ›
Sight Sciences, Inc.
$1,367
Alcon Vision LLC
$1,205
Allergan, Inc.
$941
Aerie Pharmaceuticals, Inc.
$826
ABBVIE INC.
$807
Glaukos Corporation
$795
Bausch & Lomb Americas Inc.
$783
Allergan Inc.
$560
Novartis Pharmaceuticals Corporation
$528
Sun Pharmaceutical Industries Inc.
$417
NEW WORLD MEDICAL,INC.
$414
LivaNova USA, Inc.
$348
Bausch & Lomb, a division of Bausch Health US, LLC
$272
Horizon Therapeutics plc
$266
AbbVie Inc.
$240
Alcon Laboratories Inc
$192
Johnson & Johnson Surgical Vision, Inc.
$181
Shire North American Group Inc
$150
Nova Eye, Inc.
$139
Visionix USA, Inc
$132
Amgen Inc.
$131
GLAUKOS CORPORATION
$118
Astellas Pharma US Inc
$110
SUN PHARMACEUTICAL INDUSTRIES INC.
$88
Akorn Operating Company LLC
$75
Oyster Point Pharma, Inc.
$61
Rayner Intraocular Lenses Limited
$59
Mallinckrodt Hospital Products Inc.
$58
Optos, Inc.
$52
Ivantis, Inc
$50
BIOTISSUE HOLDINGS INC.
$46
RxSight Inc
$45
Kala Pharmaceuticals, Inc.
$44
Tarsus Pharmaceuticals, Inc.
$38
Akorn, Inc.
$23
Thea Pharma Inc.
$20
BIOTISSUE HOLDINGS, INC.
$17
Top 3 companies account for 30.3% of all-time payments
Associated products mentioned in payments ›
ACTHAR · ALPHAGAN P · ARGOS · AcrySof · AcrySof IQ PanOptix · AcrySof IQ VIVITY IOL · AzaSite · BROMSITE · BromSite (bromfenac ophthalmic solution) 0.075% · CE-marked KXLA system · COMBIGAN · Cequa · Clareon · Cosopt PF · DURYSTA · EYSUVIS · HYDRUS Microstent · Hydrus Microstent · IC-8 Apthera IOL · INVELTYS · ISTENT INJECT W · IYUZEH · Izervay · Kahook Dual Blade · LOTEMAX SM · LUMIGAN · MIEBO · NFC-700 · OCT · OCT OPHTHALMOSCOPE · OMNI · OMNI SURGICAL SYSTEM · OMNI(R) SURGICAL SYSTEM (US) · Omidria · PROKERA · PROLENSA · RESTASIS · RXSIGHT CONTACT LENS · RXSIGHT INJECTOR HANDPIECE · ReSTOR · Rhopressa · Rocklatan · Simbrinza · TEPEZZA · TRAVATAN Z · TYRVAYA · Tecnis IOL · Tecnis Symfony IOL · VNS - Sentiva · VNS Therapy · VNS Therapy SenTiva Model 1000 Generator · VUITY · VYZULTA · XDEMVY · XEN · XEN GLAUCOMA TREATMENT SYSTEM · XIIDRA · Zioptan · enVista Aspire IOL · enVista MX60 IOL · iStent Trabecular Micro-Bypass System Model iS3 · iStent infinite Trabecular Micro-Bypass System Model iS3 · rhopressa · rocklatan
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (99%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Ophthalmologists within 10 mi
143
Per 100K population
17.1
County median income
$107,327
Nearest hospital
LOS ROBLES HOSPITAL & MEDICAL CENTER
5.3 mi
5.3 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. Chen is a clinical cardiology specialist, with moderate Medicare volume, with low-engagement industry engagement in the top 13% of CA peers, with 15 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Chen experienced with office visit, established patient (20-29 min)?
Based on Medicare claims data, Dr. Chen performed 870 office visit, established patient (20-29 min) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Chen receive payments from pharmaceutical companies?
Yes. Dr. Chen received a total of $11,600 from 37 companies across 346 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Chen's costs compare to other ophthalmologists in Westlake Village?
Dr. Chen's average Medicare payment per service is $98. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Chen) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
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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