NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Rebecca Jon-Merrell Callahan, PHARM.D.

Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in Farragut, TN · enumerated 2024 · practices at Kroger Limited Partnership I.

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

National Provider Identifier

1821835349

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Rebecca Jon-Merrell Callahan
Credential PHARM.D.
Sex Female
Practice address 189 Brooklawn St, Farragut, TN, 37934
Phone (865) 671-7920
Enumeration date Jul 11, 2024
Last updated in NPPES May 10, 2026

Taxonomy & licenses

1835P0018X Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist Pharmacy Service Providers · License 48111 (TN) Primary
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1821835349 active?
Yes, as of the latest NPPES snapshot, NPI 1821835349 is active (record last updated 2026-05-10).
How do I verify Rebecca Callahan's NPI record?
Cross-check NPI 1821835349 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-10.