NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Southlake Oncology

Medical Oncology Physician in Southlake, TX · enumerated 2007 · authorized official Mary Dowler, Practice Manager.

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

National Provider Identifier

1518147594

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Southlake Oncology
Practice address 1545 E Southlake Blvd, Suite 280, Southlake, TX, 76092
Phone (817) 416-0202
Enumeration date Nov 7, 2007
Last updated in NPPES Mar 12, 2008

Taxonomy & classification

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License K3595 (TX) Primary

Authorized official

Name Mary Dowler
Title Practice Manager
Phone (817) 416-0202

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

What is the NPI number for Southlake Oncology?
The NPI for Southlake Oncology is 1518147594, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Southlake Oncology?
NPPES lists Mary Dowler (Practice Manager) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-03-12.