Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1629005475 Individual Practitioner Male Practitioner

Dr. Patrick K Siu , MD

Internal Medicine • Camarillo, CA

Professional Overview & Biography Verified Profile Summary

Dr. Patrick Siu, MD is a registered healthcare professional specializing in Internal Medicine in Camarillo, CA. Practice services are available at 422 ARNEILL RD STE B under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

422 Arneill Rd Ste B

Camarillo, CA 930106434

Telephone 8053834510
Fax 8053834511
Associated Practice Facility / Clinic

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Camarillo, CA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 27.2 Yrs
State Avg: 26.6 Yrs
Regional Practice Density
26 Specialists

Practicing in Camarillo, CA (18502 Statewide)

Telehealth Adoption Rate
34.6% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License CA G86731

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Emergency Medicine - Emergency Medical Services

NUCC Taxonomy Code: 207PE0004X

State License HI MD 4738

An emergency medicine physician who specializes in non-hospital based emergency medical services (e.g., disaster site, accident scene, transport vehicle, etc.) to provide pre-hospital assessment, treatment, and transport patients.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
RHM08608F (CA)
Medicaid State Provider ID
ZZT40394F (CA)
Medicaid State Provider ID
RHM08609F (CA)
Medicaid State Provider ID
01348502 (HI)
Medicaid State Provider ID
RHM18553H (CA)
Commercial Insurance / Payer ID Blue Cross
050394 (CA)
Commercial Insurance / Payer ID Shield/hmsa
D0014375 (HI)

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

8 Associated Practitioners
NPI 1053598276

Doctor of Medicine (M.D.)

Dr. Debra Ouyang , MD

Internal Medicine - Endocrinology, Diabetes & Metabolism

NPI 1174753826

Doctor of Medicine (M.D.)

Dr. Brian Santini , MD

Internal Medicine

NPI 1417995754

Doctor of Medicine (M.D.)

Dr. Thanh-Van Mai , MD

Family Medicine

NPI 1528552411

Doctor of Medicine (M.D.)

Barbara Elices , NP

Nurse Practitioner - Family

NPI 1679662035

Nurse Practitioner

Dr. Arturo Sidransky , MD

Emergency Medicine

NPI 1710924543

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events
NPI Profile Active July 09, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 09, 2007

Registered at 422 ARNEILL RD STE B, CAMARILLO, CA 930106434 (Tel: 8053834510)

📍
Updated Business Mailing Address July 09, 2007

Registered at 2705 LOMA VISTA RD, SUITE 205, VENTURA, CA 930031581 (Tel: 8056672801)

👤
Provider Name / Credentials Updated July 09, 2007

Recorded as PATRICK SIU, M.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 09, 2007

Emergency Medicine (License #MD 4738 in HI)

🟢
Initial NPI Registration & Enumeration June 27, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews
No patient reviews submitted yet for Dr. Patrick Siu. Be the first to share your experience!

Sign in to leave a review for Dr. Patrick Siu

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1629005475
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 27, 2006
Last Update: September 11, 2025
Sole Proprietor: No

Mailing Address

2705 Loma Vista Rd, Suite 205

Ventura, CA 930031581

Phone: 8056672801

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.