Curtis Siu MD Inc
NPI 1316880586 · Internal Medicine Physician · Laguna Hills, CA
Curtis Siu MD Inc is a Internal Medicine Physician organization in Laguna Hills, CA (NPI 1316880586).
Provider details
- NPI number
- 1316880586
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Curtis Siu, President(949) 872-5227
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
Under 1 yr in 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
- 2026-04-13
- Last updated
- 2026-05-01
- Certified
- 2026-05-01
Frequently asked questions
- What is Curtis Siu MD Inc's NPI number?
- Curtis Siu MD Inc's National Provider Identifier (NPI) is 1316880586, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Curtis Siu MD Inc?
- Curtis Siu MD Inc is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Curtis Siu MD Inc located?
- Curtis Siu MD Inc's practice location on file with NPPES is 23521 Paseo De Valencia Ste 108, Laguna Hills, CA 92653-3137.
- What is Curtis Siu MD Inc's phone number?
- The practice phone number listed in the NPPES registry for Curtis Siu MD Inc is (949) 588-7262.
- Who is the authorized official for Curtis Siu MD Inc?
- The authorized official listed on Curtis Siu MD Inc's NPPES record is Curtis Siu, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Curtis Siu MD Inc's NPI active?
- Yes — Curtis Siu MD Inc's NPI (1316880586) is active in the NPPES registry as of the last update on 2026-05-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.