Arthur Liu, M.D.
NPI 1821383167 · Family Medicine Physician · Boulder Creek, CA
Arthur Liu, M.D. is a Family Medicine Physician provider in Boulder Creek, CA (NPI 1821383167).
Provider details
- NPI number
- 1821383167
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A20828 (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
15 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
- 2011-06-15
- Last updated
- 2011-06-15
Frequently asked questions
- What is Arthur Liu's NPI number?
- Arthur Liu's National Provider Identifier (NPI) is 1821383167, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Arthur Liu's specialty?
- Arthur Liu is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Arthur Liu located?
- Arthur Liu's practice location on file with NPPES is 288 E. Lomond St., Boulder Creek, CA 95006-9412.
- What is Arthur Liu's phone number?
- The practice phone number listed in the NPPES registry for Arthur Liu is (831) 338-8172.
- Is Arthur Liu's NPI active?
- Yes — Arthur Liu's NPI (1821383167) is active in the NPPES registry as of the last update on 2011-06-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.