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

Dr. David Aloysius Ketelaar, MD

Individual provider Emergency Medicine Physician · NPI 1073543542

Dr. David Aloysius Ketelaar, MD is an Emergency Medicine Physician in Santa Maria, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006
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

1400 E Church St
Santa Maria, CA 93454-5906
Phone: (805) 739-3200
Fax: (805) 739-3064
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence G77236 (CA)

Record details

NPI number1073543542
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 3, 2006
Last updated in NPPESSeptember 9, 2010

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