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

Dennis Patrick O'Malley, MD

Individual provider Clinical Pathology/Laboratory Medicine Physician · NPI 1184681223

Dennis Patrick O'Malley, MD is a Clinical Pathology/Laboratory Medicine Physician in Aliso Viejo, California. Licensed in California and Indiana. Registered with an NPI since 2006.

Licensed in
CA, IN
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

31 Columbia
Aliso Viejo, CA 92656-1460
Phone: (949) 425-5832
Fax: (949) 425-5865
Show map & directions

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

Specialties & licences

Clinical Pathology/Laboratory Medicine Physician (primary) Taxonomy 207ZP0105X · Licence A66534 (CA)
Clinical Pathology/Laboratory Medicine Physician Taxonomy 207ZP0105X · Licence 01056459A (IN)

Record details

NPI number1184681223
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 1, 2006
Last updated in NPPESSeptember 2, 2011