Medicare Enrolled

Dr. Alan Siu, MD

Neurological Surgery · Ventura, CA
Practice pattern: Clinical Cardiology — Primarily office-based clinical cardiology
Low-engagement
300 HILLMONT AVE, Ventura, CA 93003
8056489830
In practice since 2009 (16 years)
NPI: 1306073457 verify on NPPES ↗
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. Siu 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 →
Are you Dr. Siu? Request a correction or review of any data shown here. Provider portal →

What this data tells you about Dr. Siu

Dr. Alan Siu is a neurological surgery specialist in Ventura, CA, with 16 years of NPI registration. Based on federal Medicare data, Dr. Siu performed 197 Medicare services across 146 unique beneficiaries.

Between the years covered by Open Payments, Dr. Siu received a total of $28,238 from 16 pharmaceutical and/or device companies across 174 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in neurological 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. Siu 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.

✓ 16 years in practice ▲ 197 Medicare services $28,238 industry payments

Medicare Practice Summary

Medicare Utilization ↗
197
Medicare services
Bottom 38% in CA for neurological surgery
Lower Medicare volume may reflect subspecialty focus, hospital-based work, or a higher share of non-Medicare patients.
146
Unique beneficiaries
$114
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~12 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 (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.
 130 $105 $566
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.
 51 $129 $893
Initial hospital admission, high complexity
Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter.
 16 $140 $1,036
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.

Industry Payment Transparency

Open Payments through 2024 ↗
$28,238
Total received (2018-2024)
Avg $4,034/year across 7 years
Top 20% in CA for neurological surgery
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
16
Companies
174
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
$17,935 (63.5%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$10,303 (36.5%)

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2024
$142
2023
$248
2022
$11,958
2021
$8,385
2020
$2,128
2019
$4,056
2018
$1,322

Payments by company (2024)

Consulting
Speaking
Meals & Travel
Research
Highridge Medical LLC
$65
Stryker Corporation
$43
Globus Medical, Inc.
$34
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2018-2024) ›
Medical Device Business Services, Inc.
$11,722
Medtronic, Inc.
$5,931
DePuy Synthes Products, Inc.
$5,300
DePuy Synthes Sales Inc.
$1,980
SI-BONE, Inc.
$1,727
NuVasive, Inc.
$496
Centinel Spine, LLC
$316
Medtronic USA, Inc.
$188
Zimmer Biomet Holdings, Inc.
$150
Relievant Medsystems, Inc.
$146
BIOTRONIK NRO, Inc.
$102
Highridge Medical LLC
$65
Stryker Corporation
$43
Globus Medical, Inc.
$34
Olympus America Inc.
$23
Boston Scientific Corporation
$15
Top 3 companies account for 81.3% of all-time payments
Associated products mentioned in payments ›
BIOTRONIK · BRAINLAB · Biomet SpinalPak · Biomet SpinalPak Non-invasive Spine Fusion Stimulator System · CD HORIZON · CLYDESDALE · CONDUIT · DIVERGENCE-L · ELEVATE · GENERAL METALLIC STENTS · IFUSE IMPLANT · Intracept · KYPHON Balloon Kyphoplasty · MAZOR X SYSTEM · Mazor X Stealth Edition · Mobi-C · Olympus Capital Accessories · PIVOX Oblique Lateral Spinal System · PRODISC L · RISE · SYMPHONY · SYNFIX Evolution · SYNTHECEL · Sentio · StealthStation · T-PLIF · TLIF · UNIVERSAL NEURO 3 · VIPER · VIVIGEN MIS DELIVERY SYSTEM · ViviGen · XLIF · ZERO-P · nanoLOCK-L
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 (64%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.

Looking for a neurological surgery specialist in Ventura?
Compare neurological surgerists in the Ventura area by procedure volume, costs, and industry payment transparency.
Browse neurological surgerists nearby

Geographic Context

Neurological surgerists within 10 mi
24
Per 100K population
2.9
County median income
$107,327
Nearest hospital
VENTURA COUNTY MEDICAL CENTER
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. Siu is a clinical cardiology specialist, with moderate Medicare volume, with low-engagement industry engagement in the top 20% of CA peers, with 16 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. Siu experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Siu performed 130 office visit, established patient (30-39 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. Siu receive payments from pharmaceutical companies?
Yes. Dr. Siu received a total of $28,238 from 16 companies across 174 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. Siu's costs compare to other neurological surgerists in Ventura?
Dr. Siu's average Medicare payment per service is $114. 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. Siu) 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.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →