Alan Chiem, MD, MPH
NPI 1477716967 · Emergency Medicine Physician · Sylmar, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alan Chiem, MD, MPH is a Emergency Medicine Physician provider in Sylmar, CA (NPI 1477716967).
Provider details
- NPI number
- 1477716967
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MPH
- Sex
- Male
- Sole proprietor
- No
- License
- A116121 (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
17 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
- 2008-07-06
- Last updated
- 2015-03-23
Frequently asked questions
- What is Alan Chiem's NPI number?
- Alan Chiem's National Provider Identifier (NPI) is 1477716967, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alan Chiem's specialty?
- Alan Chiem is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alan Chiem located?
- Alan Chiem's practice location on file with NPPES is 14445 Olive View Dr, Sylmar, CA 91342-1437.
- What is Alan Chiem's phone number?
- The practice phone number listed in the NPPES registry for Alan Chiem is (818) 364-3107.
- Does Alan Chiem accept Medicare?
- Alan Chiem is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alan Chiem's NPI active?
- Yes — Alan Chiem's NPI (1477716967) is active in the NPPES registry as of the last update on 2015-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.