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

Dr. Joanne Duffy, PHD

Individual provider Psychologist · NPI 1124172226

Dr. Joanne Duffy, PHD is a Clinical Psychologist in Baltimore, Maryland. Qualified in 1989, 37 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in Maryland.

Years since qualifying
37
Licensed in
MD
In the registry since
2007
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

2411 W Belvedere Ave Ste 504
Baltimore, MD 21215-5232
Phone: (410) 601-0070
Fax: (410) 601-0290
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 2700 (MD)

Record details

NPI number1124172226
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedJanuary 23, 2007
Last updated in NPPESJune 19, 2013
Mailing address2411 W Belvedere Ave Ste 504, Baltimore, MD 21215-5232

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1989 (37 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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