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

Roswell Messing III, PHD

Individual provider Psychiatry Physician · NPI 1457546517

Roswell Messing III, PHD is a Psychiatry Physician in Santa Rosa, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

633 Cherry St
Santa Rosa, CA 95404
Phone: (707) 576-7875
Fax: (707) 576-7875
Show map & directions

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

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence PSY12375 (CA)

Record details

NPI number1457546517
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedSeptember 12, 2007
Last updated in NPPESSeptember 12, 2007

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