ALAN SIU MD
NPI 1306073457
Neurological Surgery in Ventura, CA

Active since June 16, 2009PECOS EnrolledAccepts Medicare Assignment
87.18/100
CMS Quality Rating
300 HILLMONT AVE, BLDG 340, STE 401, VENTURA, CA 93003(805) 648-9830(805) 648-9833 Get Directions Write a Review

NPPES record last updated: January 30, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jan 30, 2026, Jul 18, 2023, Mar 7, 2023 and 1 more (4 updates tracked since 2019).

About Alan Siu Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALAN SIU MD (NPI 1306073457) is an individual neurological surgery provider in Ventura, California, licensed in California (A154304) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS and is a graduate of Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University (2009).

NPPES Registry Identity

NPI1306073457
Entity TypeIndividualMale
Primary Taxonomy207T00000X
Provider Legal NameALAN SIUCredential: MD
Location Address300 HILLMONT AVE, BLDG 340, STE 401Ventura, CA 93003
Mailing Address3154 Glendale Blvd # 1216Los Angeles, CA 90039-1830 · (571) 249-3327 · Fax (805) 677-5304
Fax(805) 648-9833
Sole ProprietorYes
Medical School CMSClvlnd Clinic Lerner College Of Med Of Case Wstn Rsv UniversityGraduated 2009
Enumeration DateJune 16, 2009
Last NPPES UpdateJanuary 30, 20264 updates tracked since enumeration
NPPES CertifiedJanuary 30, 2026
NPI 1306073457 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyNeurological SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207T00000X
Licenses Licensed in CA · A154304 Licensed in HI · MD-23719
Definition
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
300 HILLMONT AVE, Ventura, CA 93003

Other Identifiers 1

OtherCP0600324-AS445DC · Controlled Substance

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Alan Siu Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9032489547
PECOS Enrollment IDI20180615000936
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
65 services51 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
38 services15 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
31 services16 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
30 services15 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
27 services27 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
20 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93003 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$140.72 typical visit price
range $62.32 – $185.36
Typical copayment $35.18 (range $15.58 – $46.34)
Most-billed visit code 99204
Established Patient
$77.11 typical visit price
range $20.68 – $151.85
Typical copayment $19.27 (range $5.17 – $37.96)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

87.18/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality84.09
Promoting Interoperability100
Improvement Activities40
Cost56.53

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Case Manager/Care Coordinator
300 HILLMONT AVE
VENTURA, CA 93003
Nurse Practitioner (Family)
300 HILLMONT AVE, BLDG 340, STE 401
VENTURA, CA 93003
Counselor (Mental Health)
300 HILLMONT AVE
VENTURA, CA 93003
Case Manager/Care Coordinator
300 HILLMONT AVE
VENTURA, CA 93003
Registered Nurse
300 HILLMONT AVE
VENTURA, CA 93003
Student in an Organized Health Care Education/Training Program
300 HILLMONT AVE
VENTURA, CA 93003
Internal Medicine (Hematology & Oncology)
300 HILLMONT AVE, BLDG 340, STE 501
VENTURA, CA 93003
Pathology (Anatomic Pathology & Clinical Pathology)
300 HILLMONT AVE
VENTURA, CA 93003

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alan Siu's NPI number?

The NPI number for Alan Siu is 1306073457. It was assigned to this individual provider in the NPPES registry on June 16, 2009.

Where is Alan Siu located?

Alan Siu practices at 300 Hillmont Ave Bldg 340, Ste 401, Ventura, CA 93003. The listed phone number is (805) 648-9830.

What is Alan Siu's specialty?

The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.

Is Alan Siu enrolled in Medicare?

Yes. Alan Siu is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Alan Siu accept?

Health plans from HMSA list Alan Siu as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Alan Siu was last updated on January 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.