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

Dr. Mark Allan Grabau, PHD

Individual provider Psychologist · NPI 1316107873

Dr. Mark Allan Grabau, PHD is a Psychologist in Roseville, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2008
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1899 E Roseville Pkwy Ste 100
Roseville, CA 95661-7980
Phone: (916) 220-4527
Fax: (916) 771-5353
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence PSY 18761 (CA)

Record details

NPI number1316107873
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJune 9, 2008
Last updated in NPPESJune 9, 2008
Mailing address1899 E Roseville Pkwy Ste 100, Roseville, CA 95661-7980

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