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

C Mark Keen, DDS

Individual provider General Practice Dentistry · NPI 1215130448

C Mark Keen, DDS is a General Practice Dentistry in Alta Loma, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

See every abbreviation used in this directory →

Practice location Address checks out

9606 Baseline Rd
Alta Loma, CA 91701
Phone: (909) 989-6661
Fax: (909) 989-6663
Show map & directions

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

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X · Licence 37845 (CA)

Record details

NPI number1215130448
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedJune 6, 2007
Last updated in NPPESJuly 8, 2007
Mailing address9606 Baseline Rd, Alta Loma, CA 91701

Other providers in Alta Loma