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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

JUSTIN TAM SIU MD
NPI 1407542467
Family Medicine in Los Angeles, CA

Active since April 13, 2023PECOS Enrolled
1520 SAN PABLO ST STE 1300, LOS ANGELES, CA 90033(323) 442-5900 Get Directions Write a Review

NPPES record last updated: July 9, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 9, 2026, Apr 13, 2023 (2 updates tracked since 2023).

About Justin Tam Siu Md NPPES

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

JUSTIN TAM SIU MD (NPI 1407542467) is an individual family medicine provider in Los Angeles, California, licensed in California (A198786) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS, maintains a secondary practice location in Santa Monica, and is a graduate of Other (2023).

NPPES Registry Identity

NPI1407542467
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameJUSTIN TAM SIUCredential: MD
Location Address1520 SAN PABLO ST STE 1300Los Angeles, CA 90033-5312
Mailing Address5767 W Century Blvd Ste 400Los Angeles, CA 90045-5631
Phone(323) 442-5900
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateApril 13, 2023
Last NPPES UpdateJuly 9, 20262 updates tracked since enumeration
NPPES CertifiedJuly 9, 2026
✔ NPI 1407542467 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A198786
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1520 SAN PABLO ST STE 1300, Los Angeles, CA 90033
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Secondary Practice Location 1

Location 11245 16th St Ste 309Santa Monica, CA 90404-1239 · Phone (310) 319-4377 · Fax (310) 319-4425

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Justin Tam Siu Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8325497928
PECOS Enrollment IDI20260605003865
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90033 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

DR. OLYMPIA ALEXANDRA KABOBEL D.O. M.P.H
Family Medicine
1520 SAN PABLO ST STE 1300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5900
ROMINA SIFUENTES PALOMINO M.D.
Family Medicine
1520 SAN PABLO ST STE 1300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5900
PATTY P. PINANONG MD
Family Medicine
1520 SAN PABLO ST STE 1300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5900
WEI HSUAN WANG MD
Student in an Organized Health Care Education/Training Program
1520 SAN PABLO ST STE 1300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5900
MITCHELL VEITH MD
Family Medicine
1520 SAN PABLO ST STE 1300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5900
DR. LILY RYZHKOVA M.D.
Family Medicine
1520 SAN PABLO ST STE 1300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5900
JESSLYN GONZALEZ MD
Student in an Organized Health Care Education/Training Program
1520 SAN PABLO ST STE 1300
LOS ANGELES, CA 90033
Los Angeles County (800) 872-2273
RONALD PAUL OLSON MD
Family Medicine
1520 SAN PABLO ST STE 1300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5900

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 Justin Siu's NPI number?

The NPI number for Justin Siu is 1407542467. It was assigned to this individual provider in the NPPES registry on April 13, 2023.

Where is Justin Siu located?

Justin Siu practices at 1520 San Pablo St Ste 1300, Los Angeles, CA 90033. The listed phone number is (323) 442-5900.

What is Justin Siu's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Justin Siu enrolled in Medicare?

Yes. Justin Siu is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Justin Siu was last updated on July 9, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.