Diana Lau, M.D.
NPI 1669600011 · Orthopaedic Surgery Physician · Los Alamitos, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Lau, M.D. is a Orthopaedic Surgery Physician provider in Los Alamitos, CA (NPI 1669600011).
Provider details
- NPI number
- 1669600011
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A124135 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 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
- 2009-06-24
- Last updated
- 2023-12-18
- Certified
- 2023-12-18
Frequently asked questions
- What is Diana Lau's NPI number?
- Diana Lau's National Provider Identifier (NPI) is 1669600011, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Lau's specialty?
- Diana Lau is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Diana Lau located?
- Diana Lau's practice location on file with NPPES is 3851 Katella Ave Ste 150, Los Alamitos, CA 90720-3353.
- What is Diana Lau's phone number?
- The practice phone number listed in the NPPES registry for Diana Lau is (562) 314-1400.
- Does Diana Lau accept Medicare?
- Diana Lau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Lau's NPI active?
- Yes — Diana Lau's NPI (1669600011) is active in the NPPES registry as of the last update on 2023-12-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.