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

Dr. Jonathan Fleischacker Mattanah, PHD

Individual provider Clinical Psychologist · NPI 1750417598

Dr. Jonathan Fleischacker Mattanah, PHD is a Clinical Psychologist in Towson, Maryland. Qualified in 1999, 27 years ago. Practices with Anxiety and Stress Disorders Institute of Maryland, a 6-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Maryland.

Years since qualifying
27
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.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

6525 N Charles St Gibson Bldg West Wing Ste 244
Towson, MD 21204-6872
Phone: (410) 938-8457
Fax: (410) 825-7105
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 3649 (MD)

Record details

NPI number1750417598
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedFebruary 26, 2007
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1999 (27 years in practice)
Group practice Anxiety And Stress Disorders Institute Of Maryland — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Other providers in Towson