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

Middlesex Psychiatry, PLLC

Organization Mental Health Clinic/Center (Including Community Mental Health Center) · NPI 1194233320

Middlesex Psychiatry, PLLC is a Mental Health Clinic/Center (Including Community Mental Health Center) in Holliston, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2018.

Licensed in
MA
In the registry since
2018
Specialties on file
3
What do these letters mean?
PLLC — Professional limited liability company
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Practice location Address checks out

847 Washington St
Holliston, MA 01746-1685
Phone: (508) 306-1319
Fax: (508) 861-0156
Show map & directions

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

Specialties & licences

Mental Health Clinic/Center (Including Community Mental Health Center) (primary) Taxonomy 261QM0801X · Licence RN266987 (MA)
Psychiatric/Mental Health Nurse Practitioner Taxonomy 363LP0808X · Licence RN266987 (MA)
Psychiatric/Mental Health Clinical Nurse Specialist Taxonomy 364SP0808X · Licence RN266987 (MA)

Record details

NPI number1194233320
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Jamie Simoneau — Manager · (508) 306-1319
NPI enumeratedJanuary 22, 2018
Last updated in NPPESJanuary 22, 2018
Mailing address121 Cedar St, Ashland, MA 01721-1986