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

William Siff, PHD

Individual provider Clinical Psychologist · NPI 1821477944

William Siff, PHD is a Clinical Psychologist in Sarasota, Florida. Practices as a sole proprietor. Licensed in Florida.

Licensed in
FL
In the registry since
2015
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

1255 N Gulfstream Ave Apt 604
Sarasota, FL 34236-8927
Phone: (941) 928-8862
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PY0003370 (FL)

Record details

NPI number1821477944
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedMay 21, 2015
Last updated in NPPESMay 21, 2015
Mailing address1255 N Gulfstream Ave Apt 604, Sarasota, FL 34236-8927

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