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Landmark Cancer Center Gp LLC

Radiation Oncology Physician in Muskogee, OK · enumerated 2013 · authorized official Lisa Sooter, Owner.

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

National Provider Identifier

1598102345

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Registry record

Entity type Organization (Type 2)
Legal business name Landmark Cancer Center Gp LLC
Practice address 301 N 32nd St, Muskogee, OK, 74401
Phone (918) 683-2000
Fax (918) 686-0554
Enumeration date Jun 3, 2013
Last updated in NPPES Jul 22, 2015

Taxonomy & classification

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 28969 (OK) Primary

Authorized official

Name Lisa Sooter
Title Owner
Phone (972) 573-4611

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

Who is the authorized official for Landmark Cancer Center Gp LLC?
NPPES lists Lisa Sooter (Owner) as the authorized official for this organization.
What is the NPI number for Landmark Cancer Center Gp LLC?
The NPI for Landmark Cancer Center Gp LLC is 1598102345, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-22.