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

Mary R Speth, PHD

Individual provider Psychologist · NPI 1164475190

Mary R Speth, PHD is a Clinical Psychologist in Towson, Maryland. Qualified in 1996, 30 years ago. Practices with Della Behavioral Health Services, a 54-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
30
Licensed in
MD
In the registry since
2006
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

901 Dulaney Valley Rd Ste 129
Towson, MD 21204-2600
Phone: (410) 832-2729
Fax: (410) 832-5783
Show map & directions

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

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 03675 (MD)

Record details

NPI number1164475190
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedMay 19, 2006
Last updated in NPPESJuly 13, 2026
Mailing address901 Dulaney Valley Rd, Ste 129, Towson, MD 21204-2600

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1996 (30 years in practice)
Group practice Della Behavioral Health Services — 54 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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