Alan Siu, MD
Neurological Surgery Physician · Ventura, CA
Alan Siu, MD is a neurological surgery physician with a practice address in Ventura, California, and NPI 1306073457, issued on Jun 16, 2009. Check the license (California A154304, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alan Siu
- Credential
- MD
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License numbers
- A154304 CA
MD-23719 HI
Self-reported in NPPES; status is on the state search - Practice location
- 300 Hillmont Ave, Ventura, CA 93003
- Phone
- (805) 648-9830
- Enumerated
- Jun 16, 2009
- Record last updated
- Jan 30, 2026
- Fax
- (805) 648-9833
- Medicare enrollment
- Enrolled (PECOS I20180615000936); accepts Medicare assignment
- Medical or professional school
- Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 2009
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 929 in California → Look up another NPI →
Also registered at 300 Hillmont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Thomas Adelman, CRTTCertified Respiratory Therapist1114732666
- Henrique Aihara, TECHElectroneurodiagnostic Specialist/Technologist1861108235
- Anne Akhimien, MDFamily Medicine Physician1205408515
- Trease Allen, PSYCH TECHLicensed Psychiatric Technician1174648620
- Mary Allport, LCSWClinical Social Worker1083739320
- Edgar Alviz, RNPsychiatric/Mental Health Registered Nurse1386763175
Verify Alan Siu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A154304Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 87.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $141.80
4 payments; by number, the most common kind was food and beverage; the largest payer was Highridge Medical LLC. The 5,377 providers of this specialty with any payment received $14,925.58 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Amg A Professional Medical CorporationAlhambra, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alan Siu among 929 neurological surgery physician records in California
Alan Siu, MD is one of 929 neurological surgery physician records with a practice address in California. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 59% of them.
- NPI issued2009 · 59% of these records are older, 36% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2009 · median 2005 among the 612 with a school on file
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in California
There are 929 neurological surgery physician records in California.
All 929 in California → Every provider in Ventura → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Moustapha Abou-Samra, MDVentura, CA 930031194719807
- James Herman, MDVentura, CA 930031952396491
- Nathan Oh, D.O.Ventura, CA 930031992115778
- Richard Pratt, M.D.Ventura, CA 930031245264878
- Aria Sabit, M.D.Ventura, CA 930031659510972
- Nicholas Tarlov, MDVentura, CA 930031639378078
- Katherine Wagner, MDVentura, CA 930031093125478
- David Westra, M.D.Ventura, CA 930031265645790
Common questions
What is Alan Siu, MD's NPI number?
Alan Siu, MD's National Provider Identifier (NPI) is 1306073457, issued on Jun 16, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Alan Siu, MD located?
The NPPES record lists a practice address at 300 Hillmont Ave, Ventura, CA, 93003. Phone: (805) 648-9830. Providers update this record themselves, so call before visiting.
How can I verify Alan Siu, MD's license?
NPPES lists California license number A154304, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Alan Siu, MD's MIPS final score?
The 2023 MIPS final score is 87.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.