Donald Gjesdal, M.D.
NPI 1447254339 · Allergy & Immunology Physician · Yorba Linda, CA
Donald Gjesdal, M.D. is a Allergy & Immunology Physician provider in Yorba Linda, CA (NPI 1447254339).
Provider details
- NPI number
- 1447254339
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G37094 (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
21 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
- 2005-06-08
- Last updated
- 2007-07-08
Frequently asked questions
- What is Donald Gjesdal's NPI number?
- Donald Gjesdal's National Provider Identifier (NPI) is 1447254339, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Gjesdal's specialty?
- Donald Gjesdal is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Gjesdal located?
- Donald Gjesdal's practice location on file with NPPES is 17021 Yorba Linda Blvd, Yorba Linda, CA 92886-3711.
- What is Donald Gjesdal's phone number?
- The practice phone number listed in the NPPES registry for Donald Gjesdal is (714) 961-0110.
- Is Donald Gjesdal's NPI active?
- Yes — Donald Gjesdal's NPI (1447254339) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.