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

Individual provider Psychiatry Physician · NPI 1124096250

Dr. John O. Viesselman, MD is a Psychiatry Physician in Santa Ana, California. Practices as a sole proprietor. Licensed in California and Hawaii.

Licensed in
CA, HI
In the registry since
2006
Specialties on file
4
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

1666 N Main St Ste 400
Santa Ana, CA 92701-7417
Phone: (714) 704-5900
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Child & Adolescent Psychiatry Physician (primary) Taxonomy 2084P0804X · Licence G25102 (CA)
Psychiatry Physician Taxonomy 2084P0800X · Licence MD11763 (HI)
Child & Adolescent Psychiatry Physician Taxonomy 2084P0804X · Licence MD11763 (HI)
Psychiatry Physician Taxonomy 2084P0800X · Licence G25102 (CA)

Record details

NPI number1124096250
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 14, 2006
Last updated in NPPESFebruary 6, 2014

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