Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Landmark Cancer Center Gp LLC

Organization Radiation Oncology Physician · NPI 1598102345

Landmark Cancer Center Gp LLC provides Radiation Oncology Physician services in Muskogee, Oklahoma. Licensed in Oklahoma. Registered with an NPI since 2013.

Licensed in
OK
In the registry since
2013
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

301 N 32nd St
Muskogee, OK 74401-2106 Not confirmed with CMS for 11 years — call before visiting
Phone: (918) 683-2000
Fax: (918) 686-0554
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 28969 (OK)

Record details

NPI number1598102345
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Lisa Sooter — Owner · (972) 573-4611
NPI enumeratedJune 3, 2013
Last updated in NPPESJuly 22, 2015
Mailing addressPo Box 678015, Dallas, TX 75267-8015

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