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

Individual provider Clinical Psychologist · NPI 1639163280

Diane S Tyrrell, PHD is a Clinical Psychologist in Williamsville, New York. Qualified in 1980, 46 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
46
Licensed in
NY
In the registry since
2005
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

5500 Main St Ste 207
Williamsville, NY 14221
Phone: (716) 633-6900
Fax: (716) 633-6902
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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 009444-1 (NY)

Record details

NPI number1639163280
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedSeptember 8, 2005
Last updated in NPPESJuly 10, 2015
Mailing address5500 Main St, Suite 207, Williamsville, NY 14221

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1980 (46 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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