Derek Chao, M.D.
NPI 1609818863 · Nephrology Physician · Torrance, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Derek Chao, M.D. is a Nephrology Physician provider in Torrance, CA (NPI 1609818863).
Provider details
- NPI number
- 1609818863
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A68079 (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
20 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
- 2006-06-12
- Last updated
- 2011-11-17
Frequently asked questions
- What is Derek Chao's NPI number?
- Derek Chao's National Provider Identifier (NPI) is 1609818863, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derek Chao's specialty?
- Derek Chao is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Derek Chao located?
- Derek Chao's practice location on file with NPPES is 3330 Lomita Blvd, Torrance, CA 90505-5002.
- What is Derek Chao's phone number?
- The practice phone number listed in the NPPES registry for Derek Chao is (310) 784-8770.
- Does Derek Chao accept Medicare?
- Derek Chao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Derek Chao's NPI active?
- Yes — Derek Chao's NPI (1609818863) is active in the NPPES registry as of the last update on 2011-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.