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

Individual provider Clinical Psychologist · NPI 1003125428

Mrs. Shallary Simmons Duncan, PHD is a Clinical Psychologist in Williamsport, Pennsylvania. Practices as a sole proprietor. Licensed in Pennsylvania.

Licensed in
PA
In the registry since
2010
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

721 Rose St
Williamsport, PA 17701-1678
Phone: (570) 971-7729
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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 PC001004 (PA)

Record details

NPI number1003125428
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedOctober 4, 2010
Last updated in NPPESOctober 4, 2010

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