Summation Group LLC
Summation Group LLC is a healthcare organization registered as Radiation Oncology Physician in Claremore, OK, holding Type 2 (organization) NPI 1689712457 since 2007. The authorized official on file is Van Woo, Sole Owner.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1689712457 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Summation Group LLC |
| Practice address | 1501 N FLORENCE, SUITE 191, Claremore, OK, 74017 |
| Phone | 9182839900 |
| Fax | 9182839911 |
| Enumeration date | 2007-02-02 |
| Last updated in NPPES | 2020-08-22 |
Authorized official
| Name | Van Woo |
|---|---|
| Title | Sole Owner |
| Phone | 9182839900 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 2085R0001X | Radiation Oncology Physician | Primary | — | — |
Copy-ready billing details
Provider: Summation Group LLC NPI: 1689712457 Taxonomy: 2085R0001X (Radiation Oncology Physician) Address: 1501 N FLORENCE, SUITE 191, Claremore, OK, 74017
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1356339816 | William Durick | Individual | Internal Medicine Physician | Claremore, OK |
| 1508835190 | James Wingo | Individual | Internal Medicine Physician | Claremore, OK |
| 1982656617 | William Smith | Individual | Internal Medicine Physician | Claremore, OK |
| 1487606174 | Dennis Mourning | Individual | Internal Medicine Physician | Claremore, OK |
| 1659314011 | Claremore Internal Medicine, LLC | Organization | Internal Medicine Physician | Claremore, OK |
| 1316981384 | Claremore Horizon Radiation Oncology Center, LLC | Organization | Radiation Oncology Physician | Claremore, OK |
| 1578614871 | Amy Hughes | Individual | Physical Therapist | Claremore, OK |
| 1043359805 | Sarah Knife Chief | Individual | Orthopaedic Surgery Physician | Claremore, OK |
Verify this record
Cross-check NPI 1689712457 against the authoritative CMS record: view Summation Group LLC on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
What type of organization is Summation Group LLC?
What is a Type 2 NPI?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-08-22.