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

William Thornton, PMHNP

Individual provider Registered Nurse · NPI 1225842065

William Thornton, PMHNP is a Nurse Practitioner in Somerville, Massachusetts. Qualified in 2023, 3 years ago. Practices with Katherine J Atkinson MD PC, an 8-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
3
Licensed in
MA
In the registry since
2025
Specialties on file
2
What do these letters mean?
PMHNP — Psychiatric-Mental Health Nurse Practitioner
A nurse practitioner specialising in mental health, able to prescribe psychiatric medication.

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Practice location Address checks out

165 Hudson St Apt 1
Somerville, MA 02144-2631
Phone: (610) 291-1489
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence RN2352821 (MA)
Registered Nurse Taxonomy 163W00000X · Licence RN2352821 (MA)

Record details

NPI number1225842065
Entity typeIndividual (Type 1)
GenderMale
Credentials PMHNP
Sole proprietorYes
NPI enumeratedFebruary 3, 2025
Last updated in NPPESAugust 26, 2025
Certification dateAugust 26, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2023 (3 years in practice)
Group practice Katherine J Atkinson Md Pc — 8 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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