Chien Sun, M.D.
NPI 1326153750 · Emergency Medicine Physician · Anaheim, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chien Sun, M.D. is a Emergency Medicine Physician provider in Anaheim, CA (NPI 1326153750).
Provider details
- NPI number
- 1326153750
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A77365 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES 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
- 2006-08-19
- Last updated
- 2021-12-03
Frequently asked questions
- What is Chien Sun's NPI number?
- Chien Sun's National Provider Identifier (NPI) is 1326153750, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chien Sun's specialty?
- Chien Sun is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chien Sun located?
- Chien Sun's practice location on file with NPPES is 3440 E La Palma Ave, Anaheim, CA 92806-2020.
- What is Chien Sun's phone number?
- The practice phone number listed in the NPPES registry for Chien Sun is (714) 644-2800.
- Does Chien Sun accept Medicare?
- Chien Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chien Sun's NPI active?
- Yes — Chien Sun's NPI (1326153750) is active in the NPPES registry as of the last update on 2021-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.