Derek Liu, MD
NPI 1861133563 · Internal Medicine Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Derek Liu, MD is a Internal Medicine Physician provider in Stanford, CA (NPI 1861133563).
Provider details
- NPI number
- 1861133563
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A188691 (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
4 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
- 2022-04-05
- Last updated
- 2025-07-11
- Certified
- 2025-07-11
Frequently asked questions
- What is Derek Liu's NPI number?
- Derek Liu's National Provider Identifier (NPI) is 1861133563, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derek Liu's specialty?
- Derek Liu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Derek Liu located?
- Derek Liu's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Derek Liu's phone number?
- The practice phone number listed in the NPPES registry for Derek Liu is (650) 723-4000.
- Does Derek Liu accept Medicare?
- Derek Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Derek Liu's NPI active?
- Yes — Derek Liu's NPI (1861133563) is active in the NPPES registry as of the last update on 2025-07-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.