Daniel Thieu, MD
NPI 1154070886 · Family Medicine Physician · Orange, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Thieu, MD is a Family Medicine Physician provider in Orange, CA (NPI 1154070886).
Provider details
- NPI number
- 1154070886
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A190145 (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
- 2022-03-21
- Last updated
- 2025-09-22
- Certified
- 2025-09-22
Frequently asked questions
- What is Daniel Thieu's NPI number?
- Daniel Thieu's National Provider Identifier (NPI) is 1154070886, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Thieu's specialty?
- Daniel Thieu is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Thieu located?
- Daniel Thieu's practice location on file with NPPES is 2501 E Chapman Ave Ste 305, Orange, CA 92869-3204.
- What is Daniel Thieu's phone number?
- The practice phone number listed in the NPPES registry for Daniel Thieu is (714) 628-3230.
- Does Daniel Thieu accept Medicare?
- Daniel Thieu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Thieu's NPI active?
- Yes — Daniel Thieu's NPI (1154070886) is active in the NPPES registry as of the last update on 2025-09-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.