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

Dr. Andrew Hahn, PSYD

Individual provider Psychologist · NPI 1679620389

Dr. Andrew Hahn, PSYD is a Clinical Psychologist in Waltham, Massachusetts. Qualified in 1985, 41 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
41
Licensed in
MA
In the registry since
2007
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

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Practice location Address checks out

115 Worcester Ln
Waltham, MA 02451-7538
Phone: (781) 274-6633
Fax: (781) 274-6644
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence PY4357-PR (MA)

Record details

NPI number1679620389
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorYes
NPI enumeratedJanuary 4, 2007
Last updated in NPPESNovember 21, 2017
Mailing address115 Worcester Ln, Waltham, MA 02451-7538

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1985 (41 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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