Sydney Tien, PA-C
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2025
- Practice address
- 1500 Duarte Rd, Duarte, CA 91010
- Practice phone
- Call (800) 826-4673
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
City of Hope Comprehensive Cancer Center - Duarte
Duarte, California
Find Sydney Tien's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Sydney Tien is a physician assistant in Duarte, California
Sydney Tien practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California.
Sydney Tien's NPI, 1124996731, was assigned on October 27, 2025. Sydney Tien holds California license PA66997.
- NPI
- 1124996731NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7416440912
- NPI enumeration date
- October 27, 2025
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (800) 826-4673
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 27
- Medical school graduation
- 2025
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Sydney Tien practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California
Sydney Tien's primary practice is City of Hope Comprehensive Cancer Center - Duarte, at 1500 Duarte Rd, Duarte, CA 91010 in Los Angeles County. The practice phone is (800) 826-4673.
- City of Hope Comprehensive Cancer Center - Duarte1500 Duarte Rd, Duarte, CA 91010 · Los Angeles CountyPhone(800) 826-4673
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Sydney Tien is affiliated with 2 sites of care and 1 medical group
Sydney Tien's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. The medical group on file is City of Hope. Dmand AI also links Sydney Tien to 1 more other site, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Sydney Tien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Sydney Tien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| City of Hope Comprehensive Cancer Center - Duarte | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Sydney Tien is one of 11,482 physician assistants in California
Physician assistant is Sydney Tien's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Sydney Tien is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Sydney Tien
Counts of physician assistants with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Sydney Tien's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Sydney Tien's median patient age at 68, with 13% women.
Sydney Tien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women13%
- Men87%
Source: Dmand AI Patient Panel Data
How Sydney Tien takes part in Medicare
Sydney Tien accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Sources for Sydney Tien's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Sydney Tien
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Sydney Tien's NPI number?
Sydney Tien's NPI number is 1124996731. It was assigned on October 27, 2025, and it is active in the NPI Registry.
What does Sydney Tien specialize in?
Sydney Tien is a physician assistant in Duarte, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Sydney Tien practice?
Sydney Tien practices at 1500 Duarte Rd, Duarte, CA 91010. Sydney Tien's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. Dmand AI also links Sydney Tien to 1 other site.
What is Sydney Tien's office phone number?
The practice phone on file for Sydney Tien is (800) 826-4673.
What is Sydney Tien's medical license number?
Sydney Tien holds California license PA66997.
What medical group is Sydney Tien part of?
Sydney Tien is linked to City of Hope.
Does Sydney Tien accept Medicare?
Yes. CMS lists Sydney Tien as accepting Medicare assignment.
How long has Sydney Tien been practicing?
Sydney Tien graduated from medical school in 2025, 1 years ago.
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