Yvonne Hsieh, M.D.
NPI 1659570174 · Allergy Physician · Yorba Linda, CA
Enrolled with Medicare as Order and Referring Only - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yvonne Hsieh, M.D. is a Allergy Physician provider in Yorba Linda, CA (NPI 1659570174).
Provider details
- NPI number
- 1659570174
- Entity type
- Individual
- Primary specialty
- Allergy PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A99871 (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
18 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
- 2007-07-13
- Last updated
- 2011-02-09
Frequently asked questions
- What is Yvonne Hsieh's NPI number?
- Yvonne Hsieh's National Provider Identifier (NPI) is 1659570174, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yvonne Hsieh's specialty?
- Yvonne Hsieh is listed in the NPPES registry with a primary specialty of Allergy Physician (Allopathic & Osteopathic Physicians).
- Where is Yvonne Hsieh located?
- Yvonne Hsieh's practice location on file with NPPES is 19871 Yorba Linda Blvd, Yorba Linda, CA 92886-2811.
- What is Yvonne Hsieh's phone number?
- The practice phone number listed in the NPPES registry for Yvonne Hsieh is (714) 777-8845.
- Does Yvonne Hsieh accept Medicare?
- Yvonne Hsieh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yvonne Hsieh's NPI active?
- Yes — Yvonne Hsieh's NPI (1659570174) is active in the NPPES registry as of the last update on 2011-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.