Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Nell Peiken Mental Health Services

Psychiatric/Mental Health Nurse Practitioner in Middleton, MA · enumerated 2018 · authorized official Nell Peiken, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1114404449

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Registry record

Entity type Organization (Type 2)

Legal business name Nell Peiken Mental Health Services

Practice address 10 Maple St Ste 202, Middleton, MA, 01949

Phone (978) 406-9043

Enumeration date Jul 19, 2018

Last updated in NPPES Jul 19, 2018

Taxonomy & classification

261Q00000X Clinic/Center Ambulatory Health Care Facilities Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Primary

Authorized official

Name Nell Peiken

Title President

Phone (978) 406-9043

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2018-07-19. Verify at npiregistry.cms.hhs.gov.

Where is Nell Peiken Mental Health Services located?

The practice location on file with NPPES is in Middleton, MA.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-19.