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Sonya L Cornwell Phd Clinical Psychologist Pllc

Clinical Psychologist in Tahlequah, OK · enumerated 2019 · authorized official Sonya Cornwell, Phd and Owner.

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

National Provider Identifier

1417508904

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Registry record

Entity type Organization (Type 2)
Legal business name Sonya L Cornwell Phd Clinical Psychologist Pllc
Practice address 310 W Keetoowah St, Tahlequah, OK, 74464
Phone (918) 708-9558
Fax (918) 708-9580
Enumeration date Sep 25, 2019
Last updated in NPPES Sep 25, 2019

Taxonomy & classification

101Y00000X Counselor Behavioral Health & Social Service Providers Secondary
101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary
101YP2500X Professional Counselor Behavioral Health & Social Service Providers Secondary
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers Primary
103TC1900X Counseling Psychologist Behavioral Health & Social Service Providers Secondary
103TC2200X Clinical Child & Adolescent Psychologist Behavioral Health & Social Service Providers Secondary

Authorized official

Name Sonya Cornwell
Title Phd and Owner
Phone (918) 708-9558

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.

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Frequently asked questions

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Sonya L Cornwell Phd Clinical Psychologist Pllc?
Sonya L Cornwell Phd Clinical Psychologist Pllc is registered in NPPES as a Clinical Psychologist (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-09-25.