Sydney Tien, PA-C
NPI 1124996731 · Physician Assistant · Duarte, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sydney Tien, PA-C is a Physician Assistant provider in Duarte, CA (NPI 1124996731).
Provider details
- NPI number
- 1124996731
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA66997 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-10-27
- Last updated
- 2026-01-09
- Certified
- 2026-01-09
Frequently asked questions
- What is Sydney Tien's NPI number?
- Sydney Tien's National Provider Identifier (NPI) is 1124996731, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sydney Tien's specialty?
- Sydney Tien is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sydney Tien located?
- Sydney Tien's practice location on file with NPPES is 1500 Duarte Rd, Duarte, CA 91010-3012.
- What is Sydney Tien's phone number?
- The practice phone number listed in the NPPES registry for Sydney Tien is (626) 301-8247.
- Does Sydney Tien accept Medicare?
- Sydney Tien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sydney Tien's NPI active?
- Yes — Sydney Tien's NPI (1124996731) is active in the NPPES registry as of the last update on 2026-01-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.