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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Carol Royer Costello, PH.D

Mental Health Counselor in Arlington, TX · enumerated 2007 · practices at Arete Sleep Therapy LLC.

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

National Provider Identifier

1093835498

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Registry record

Entity type Individual (Type 1)
Name Dr. Carol Royer Costello
Credential PH.D
Sex Female
Practice address Arlington, TX, 76012
Phone (817) 548-0300
Fax (817) 795-9668
Enumeration date Mar 30, 2007
Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 9886 (TX) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

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 the NPI number for Carol Costello?
The National Provider Identifier (NPI) for Carol Costello is 1093835498, a Type 1 (individual) record in the CMS NPPES registry.
Where does Carol Costello practice?
The practice location on file with NPPES is in Arlington, TX. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.