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SYDNEY TIEN PA-C
NPI 1124996731
Physician Assistant in Duarte, CA

Active since October 27, 2025PECOS EnrolledAccepts Medicare Assignment
1500 DUARTE RD, DUARTE, CA 91010(626) 301-8247(626) 218-5334 Get Directions Write a Review

NPPES record last updated: January 9, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Sydney Tien Pa-c NPPES

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

SYDNEY TIEN PA-C (NPI 1124996731) is an individual physician assistant in Duarte, California, licensed in California (PA66997) and active in the NPI registry since October 2025. She is enrolled in Medicare PECOS and is a graduate of Other (2025).

NPPES Registry Identity

NPI1124996731
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameSYDNEY TIENCredential: PA-C
Location Address1500 DUARTE RDDuarte, CA 91010-3012
Mailing AddressPo Box 512185Los Angeles, CA 90051-0185
Phone(626) 301-8247
Fax(626) 218-5334
Sole ProprietorNo
Medical School CMSOtherGraduated 2025
Enumeration DateOctober 27, 2025
Last NPPES UpdateJanuary 9, 2026
NPPES CertifiedJanuary 9, 2026
✔ NPI 1124996731 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in CA · PA66997
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
1500 DUARTE RD, Duarte, CA 91010
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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

Sydney Tien Pa-c 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 ID7416440912
PECOS Enrollment IDI20251203002098
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 91010 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
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
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.

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.

SASAN FAZELI M.D.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673
SKAI MINDY FU PHARMD
Pharmacist
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 500-5461
JIMMIE WONG MD
Radiology (Diagnostic Radiology)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 359-8111
TERENCE WILLIAMS M.D.
Radiology (Radiation Oncology)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673
DR. MUSTAFA RAOOF M.D.
Surgery (Surgical Oncology)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673
DR. EDNA CLOGG SHENVI M.D.
Surgery
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673
ALAN CHEN TANG M.D.
Anesthesiology
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 359-8111
WINSTON YUHSIEN LEE MD, PHD
Pathology (Hematology)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673

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 Sydney Tien's NPI number?

The NPI number for Sydney Tien is 1124996731. It was assigned to this individual provider in the NPPES registry on October 27, 2025.

Where is Sydney Tien located?

Sydney Tien practices at 1500 Duarte Rd, Duarte, CA 91010. The listed phone number is (626) 301-8247.

What is Sydney Tien's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Sydney Tien enrolled in Medicare?

Yes. Sydney Tien 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.

When was this NPI record last updated?

The NPPES record for Sydney Tien was last updated on January 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.