Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Stephanie Cassandra Yarnell, MD, PHD

Individual provider Psychiatry Physician · NPI 1265775084

Stephanie Cassandra Yarnell, MD, PHD is a Psychiatry Physician in New Haven, Connecticut. Practices as a sole proprietor. Licensed in Connecticut.

Licensed in
CT
In the registry since
2013
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
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

20 York St # T-209 Yale-New Haven Hospital
New Haven, CT 06510-3220
Phone: (203) 688-2259
Fax: (203) 688-5599
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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 54297 (CT)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1265775084
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , PHD
Sole proprietorYes
NPI enumeratedMarch 29, 2013
Last updated in NPPESAugust 17, 2016

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