DR. S SPENCE MCCACHREN MD
NPI 1639149867
Internal Medicine - Hematology & Oncology in Maryville, TN
About Dr. S Spence Mccachren Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. S SPENCE MCCACHREN MD (NPI 1639149867) is an individual hematology & oncology provider in Maryville, Tennessee, licensed in Tennessee (26117) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. S Spence Mccachren Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show S Mccachren reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Knoxville, TN 37916
- Reassigned Medicare billing, Tennessee enrollment
- 139 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 37804 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MARYVILLE, TN 37804
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is S Mccachren's NPI number?
The NPI number for S Mccachren is 1639149867. It was assigned to this individual provider in the NPPES registry on January 23, 2006.
Where is S Mccachren located?
S Mccachren practices at 220 Bmh Cancer Center, Maryville, TN 37804. The listed phone number is (865) 977-1065.
What is S Mccachren's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is S Mccachren enrolled in Medicare?
Yes. S Mccachren is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for S Mccachren's services?
According to the CMS Revalidation Reassignment List (October 2026 release), S Mccachren reassigns Medicare benefits to Thompson Oncology Group (Knoxville, TN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for S Mccachren's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for S Mccachren was last updated on June 29, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.