WILLIAM THORNTON PMHNP
NPI 1225842065
Nurse Practitioner - Psychiatric/Mental Health in Somerville, MA
About William Thornton Pmhnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM THORNTON PMHNP (NPI 1225842065) is an individual psychiatric/mental health provider in Somerville, Massachusetts, licensed in Massachusetts (RN2352821) and active in the NPI registry since February 2025. He is enrolled in Medicare PECOS and is a graduate of Other (2023).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
William Thornton Pmhnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02144 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Thornton's NPI number?
The NPI number for William Thornton is 1225842065. It was assigned to this individual provider in the NPPES registry on February 3, 2025.
Where is William Thornton located?
William Thornton practices at 165 Hudson St Apt 1, Somerville, MA 02144. The listed phone number is (610) 291-1489.
What is William Thornton's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is William Thornton enrolled in Medicare?
Yes. William Thornton is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
What insurance does William Thornton accept?
Health plans from Harvard Pilgrim Health Care list William Thornton as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for William Thornton was last updated on August 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# William Thornton, PMHNP · NPI 1225842065
Psychiatric/Mental Health physician in Somerville, Massachusetts. Individual provider, active in the CMS NPPES registry since February 3, 2025.
## Identity
- **NPI:** 1225842065 (Entity type: Individual)
- **Enumerated:** February 3, 2025
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** RN2352821 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 165 HUDSON ST APT 1, Somerville, MA 02144-2631
- **Phone:** (610) 291-1489
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** August 26, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1225842065) · Data from the CMS NPPES public registry.