Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Leah Harmon Costello, PA
Physician Assistant in Malvern, AR · enumerated 2014.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1588073738
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Registry record
Entity type Individual (Type 1)
Name Mrs. Leah Harmon Costello
Credential PA
Sex Female
Practice address 1002 Schneider Dr Ste 104, Malvern, AR, 72104
Phone (501) 332-7981
Fax (501) 337-9964
Enumeration date Aug 12, 2014
Last updated in NPPES May 17, 2021
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA-565 (AR) Primary
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program.
About the PA 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.
Frequently asked questions
What is the NPI number for Leah Costello?
The National Provider Identifier (NPI) for Leah Costello is 1588073738, a Type 1 (individual) record in the CMS NPPES registry.
Where does Leah Costello practice?
The practice location on file with NPPES is in Malvern, AR. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-17.