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

Individual provider Psychiatry Physician · NPI 1265456081

Dr. Dennett John Hanssmann, MD is a Psychiatry Physician in Davis, 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.

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Practice location Address checks out

1621 Oak Ave Ste B
Davis, CA 95616-1000
Phone: (916) 452-3030
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence C-33144 (CA)

Record details

NPI number1265456081
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 26, 2006
Last updated in NPPESSeptember 20, 2024
Certification dateSeptember 20, 2024
Mailing address1621 Oak Ave Ste B, Davis, CA 95616-1000

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