Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Sean Leson, DO

Individual provider Clinical & Laboratory Immunology (Allergy & Immunology) Physician · NPI 1699733766

Dr. Sean Leson, DO is an Allergy/Immunology in Garden Grove, California. Graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1989, 37 years ago. Accepts Medicare assignment. Licensed in California.

Years since qualifying
37
Trained at
At Still University of Health Sciences, College of Osteo Med, Kirksville
Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

12512 Garden Grove Blvd
Garden Grove, CA 92843-1907
Phone: (714) 590-1611
Fax: (714) 590-1641
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical & Laboratory Immunology (Allergy & Immunology) Physician (primary) Taxonomy 207KI0005X · Licence 20A6461 (CA)
Allergy & Immunology (Internal Medicine) Physician Taxonomy 207RA0201X · Licence 20A6461 (CA)

Record details

NPI number1699733766
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 1, 2006
Last updated in NPPESJanuary 21, 2014

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyALLERGY/IMMUNOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolAT STILL UNIVERSITY OF HEALTH SCIENCES, COLLEGE OF OSTEO MED, KIRKSVILLE
Graduated 1989 (37 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount