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

William D. Charmak, PHD

Individual provider Cognitive & Behavioral Psychologist · NPI 1710078068

William D. Charmak, PHD is a Clinical Psychologist in Nashua, New Hampshire. Qualified in 1988, 38 years ago. Practices with Foundation Medical Partners Inc, a 311-clinician group and accepts Medicare assignment. Licensed in Maryland and New Hampshire.

Years since qualifying
38
Licensed in
MD, NH
In the registry since
2006
Specialties on file
4
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 →

Practice location Address checks out

19 Tyler St Ste 103
Nashua, NH 03060-2951
Phone: (603) 577-5375
Fax: (603) 577-5609
Show map & directions

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 1533 (NH)
Cognitive & Behavioral Psychologist Taxonomy 103TB0200X · Licence 03296 (MD)
Clinical Psychologist Taxonomy 103TC0700X · Licence 03296 (MD)
Counseling Psychologist Taxonomy 103TC1900X · Licence 03296 (MD)

Record details

NPI number1710078068
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedSeptember 28, 2006
Last updated in NPPESApril 24, 2023
Certification dateApril 10, 2023

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1988 (38 years in practice)
Group practice Foundation Medical Partners Inc — 311 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare