1. Home
  2. Directory
  3. California
  4. Claremont
  5. Family Medicine
  6. NPI Profile

JONATHAN PUI-KAY SIU D.O.
NPI 1346652179
Family Medicine in Claremont, CA

Active since May 28, 2014Opted out of Medicare · through Aug 1, 2027
250 W SAN JOSE AVE, CLAREMONT, CA 91711(888) 750-0036 Get Directions Write a Review

NPPES record last updated: December 6, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 6, 2021, Jul 6, 2020, Mar 1, 2016 (3 updates tracked since 2016).

About Jonathan Pui-kay Siu D.o. NPPES

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

JONATHAN PUI-KAY SIU D.O. (NPI 1346652179) is an individual family medicine provider in Claremont, California, licensed in California (20A14265) and active in the NPI registry since May 2014. He has opted out of Medicare through August 1, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1346652179
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameJONATHAN PUI-KAY SIUCredential: D.O.
Location Address250 W SAN JOSE AVEClaremont, CA 91711-5207
Mailing Address250 W San Jose AveClaremont, CA 91711-5207 · (888) 750-0036
Phone(888) 750-0036
Sole ProprietorNo
Enumeration DateMay 28, 2014
Last NPPES UpdateDecember 6, 20213 updates tracked since enumeration
NPPES CertifiedJuly 6, 2020
✔ NPI 1346652179 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · 20A14265
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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
250 W SAN JOSE AVE, Claremont, CA 91711
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Jonathan Pui-kay Siu D.o. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from August 1, 2025 through August 1, 2027.

Opt-Out Effective DateAugust 1, 2025
Opt-Out In Effect ThroughAugust 1, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91711 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 8

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

MONICA HAN
Pharmacist
250 W SAN JOSE AVE
CLAREMONT, CA 91711
Los Angeles County (909) 399-2086
JOHN CHEUNG
Pharmacist
250 W SAN JOSE AVE
CLAREMONT, CA 91711
Los Angeles County (909) 399-2086
DR. LOURDES MINAYA MD
Pediatrics
250 W SAN JOSE AVE
CLAREMONT, CA 91711
Los Angeles County (888) 750-0036
JESSICA MY NGO MD
Family Medicine
250 W SAN JOSE AVE
CLAREMONT, CA 91711
Los Angeles County (909) 399-2095
DR. THIRI T OO M.D.
Internal Medicine
250 W SAN JOSE AVE
CLAREMONT, CA 91711
Los Angeles County (833) 574-2273
KAISER FOUNDATION HEALTH PLAN INC
Pharmacy (Community/Retail Pharmacy)
250 W SAN JOSE AVE
CLAREMONT, CA 91711
Los Angeles County (866) 889-8555
MARIANA YU
Pharmacist
250 W SAN JOSE AVE
CLAREMONT, CA 91711
Los Angeles County (909) 399-2086
DR. JIN HEWA PARK D.O.
Family Medicine
250 W SAN JOSE AVE
CLAREMONT, CA 91711
Los Angeles County (909) 399-2063

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 Jonathan Siu's NPI number?

The NPI number for Jonathan Siu is 1346652179. It was assigned to this individual provider in the NPPES registry on May 28, 2014.

Where is Jonathan Siu located?

Jonathan Siu practices at 250 W San Jose Ave, Claremont, CA 91711. The listed phone number is (888) 750-0036.

What is Jonathan Siu's specialty?

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

Is Jonathan Siu enrolled in Medicare?

No. Jonathan Siu has opted out of Medicare through August 1, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Jonathan Siu was last updated on December 6, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.