Yu-Nan Hsu Inc
NPI 1033547641 · Hospitalist Physician · Fountain Valley, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yu-Nan Hsu Inc is a Hospitalist Physician organization in Fountain Valley, CA (NPI 1033547641).
Provider details
- NPI number
- 1033547641
- Entity type
- Organization
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Yu-Nan Hsu, President(800) 641-4651
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
12 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
- 2013-10-16
- Last updated
- 2016-12-28
Frequently asked questions
- What is Yu-Nan Hsu Inc's NPI number?
- Yu-Nan Hsu Inc's National Provider Identifier (NPI) is 1033547641, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Yu-Nan Hsu Inc?
- Yu-Nan Hsu Inc is classified in the NPPES registry as Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Yu-Nan Hsu Inc located?
- Yu-Nan Hsu Inc's practice location on file with NPPES is 11037 Warner Ave, Fountain Valley, CA 92708-4007.
- What is Yu-Nan Hsu Inc's phone number?
- The practice phone number listed in the NPPES registry for Yu-Nan Hsu Inc is (800) 641-4651.
- Does Yu-Nan Hsu Inc accept Medicare?
- Yu-Nan Hsu Inc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Yu-Nan Hsu Inc?
- The authorized official listed on Yu-Nan Hsu Inc's NPPES record is Yu-Nan Hsu, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Yu-Nan Hsu Inc's NPI active?
- Yes — Yu-Nan Hsu Inc's NPI (1033547641) is active in the NPPES registry as of the last update on 2016-12-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.