CHRISTYN SIEVE PSYD PSYCHOLOGICAL SERVICES PLLC
NPI 1326636903
Clinic/Center - Adult Mental Health in Portsmouth, NH

Q: What is Christyn Sieve Psyd Psychological Services PLLC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Adult Mental Health, with taxonomy code 261QM0850X.

Active since January 08, 2021

439 MIDDLE ST, PORTSMOUTH, NH 03801(603) 498-1575 Get Directions Write a Review

NPPES record last updated: January 8, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Christyn Sieve Psyd Psychological Services Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CHRISTYN SIEVE PSYD PSYCHOLOGICAL SERVICES PLLC (NPI 1326636903) is a healthcare organization registered as an adult mental health in Portsmouth, New Hampshire and active in the NPI registry since January 2021. The organization lists Christyn B Sieve, Clinical Psychologist, as its authorized official.

NPPES Registry Identity

NPI1326636903

Entity TypeOrganization

Primary Taxonomy261QM0850X

Legal Business NameCHRISTYN SIEVE PSYD PSYCHOLOGICAL SERVICES PLLC

Location Address439 MIDDLE STPortsmouth, NH 03801-5080

Mailing Address45 Brackett RdPortsmouth, NH 03801-5261 · (603) 498-1575

Phone(603) 498-1575

Organization SubpartNo

Authorized OfficialChristyn B SieveClinical Psychologist · (603) 498-1575

Enumeration DateJanuary 8, 2021

NPPES CertifiedJanuary 8, 2021

✔ NPI 1326636903 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Adult Mental HealthAmbulatory Health Care Facilities

Taxonomy Code261QM0850X

Definition

An entity, facility, or distinct part of a facility providing diagnostic, treatment, and prescriptive services related to mental and behavioral disorders in adults.

439 MIDDLE ST, Portsmouth, NH 03801

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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 Christyn Sieve Psyd Psychological Services PLLC's NPI number?

The NPI number for Christyn Sieve Psyd Psychological Services PLLC is 1326636903. It was assigned to this organization in the NPPES registry on January 8, 2021.

Where is Christyn Sieve Psyd Psychological Services PLLC located?

Christyn Sieve Psyd Psychological Services PLLC is located at 439 Middle St, Portsmouth, NH 03801. The listed phone number is (603) 498-1575.

What is Christyn Sieve Psyd Psychological Services PLLC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Adult Mental Health, with taxonomy code 261QM0850X.

When was this NPI record last updated?

The NPPES record for Christyn Sieve Psyd Psychological Services PLLC was last updated on January 8, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.