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

Mark H. Ellis, MD

Individual provider Pediatric Allergy/Immunology Physician · NPI 1568569424

Mark H. Ellis, MD is an Allergy/Immunology in Orange, California. Graduated from Tulane University School of Medicine in 1981, 45 years ago. Practices with Childrens Hospital of Orange County, a 71-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
45
Trained at
Tulane University School of Medicine
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

455 S Main St
Orange, CA 92868-3835
Phone: (714) 289-4511
Fax: (714) 289-4788
Show map & directions

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

Specialties & licences

Pediatric Allergy/Immunology Physician (primary) Taxonomy 2080P0201X · Licence C41445 (CA)

Record details

NPI number1568569424
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 20, 2006
Last updated in NPPESJuly 8, 2007
Mailing address455 S Main St, Orange, CA 92868-3835

Medicare enrollment

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

Medicare specialtyALLERGY/IMMUNOLOGY
Medical schoolTULANE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1981 (45 years in practice)
Group practice Childrens Hospital Of Orange County — 71 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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