MATTHEW CASSELL, MD
NPI 1164433678
Non-Pharmacy Dispensing Site in Meridian, MS
About Matthew Cassell, Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MATTHEW CASSELL, MD (NPI 1164433678) is a healthcare organization registered as a non-pharmacy dispensing site in Meridian, Mississippi and active in the NPI registry since August 2006. The organization holds an CLIA Accreditation certificate valid through September 18, 2027 and lists Wendy Turner, Clinic Manager, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Matthew Cassell, Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
4Medicare enrollment records show 4 clinicians reassign Medicare billing to Matthew Cassell, MD, which bills Medicare for the services they deliver. Of these, 4 practice at this address. They are listed nearest first.
Clinicians, nearest first (4)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Accreditation 25D0964681
Meridian Oncology Associates, PLLC · Meridian, MSFrequently 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 Meridian Oncology Associates PLLC's NPI number?
The NPI number for Meridian Oncology Associates PLLC is 1164433678. It was assigned to this organization in the NPPES registry on August 10, 2006. The provider is also known as Matthew Cassell, MD.
Where is Meridian Oncology Associates PLLC located?
Meridian Oncology Associates PLLC is located at 1704 23rd Ave 2nd Flr, Meridian, MS 39301. The listed phone number is (601) 482-1555.
What is Meridian Oncology Associates PLLC's specialty?
The primary specialty registered for this NPI is Non-Pharmacy Dispensing Site with taxonomy code 332900000X.
Is Meridian Oncology Associates PLLC enrolled in Medicare?
Yes. Meridian Oncology Associates PLLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Meridian Oncology Associates PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians reassign their Medicare billing to Meridian Oncology Associates PLLC, in Hematology/Oncology and Medical Oncology. A 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 the clinician's services. Of these, 4 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Meridian Oncology Associates PLLC hold a CLIA laboratory certificate?
Yes. A Certificate of Accreditation (number 25D0964681) is associated with this NPI, valid through September 18, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
What insurance does Meridian Oncology Associates PLLC accept?
Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter Health of Delaware, Ambetter from Absolute Total Care and Ambetter from Arkansas Health & Wellness and 37 other insurers list Meridian Oncology Associates PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Meridian Oncology Associates PLLC was last updated on September 11, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Matthew Cassell, Md · NPI 1164433678
Non-Pharmacy Dispensing Site organization in Meridian, Mississippi. Organization record, active in the CMS NPPES registry since August 10, 2006.
## Identity
- **NPI:** 1164433678 (Entity type: Organization)
- **Enumerated:** August 10, 2006
- **Primary specialty:** Non-Pharmacy Dispensing Site · taxonomy 332900000X
- **Legal business name:** Meridian Oncology Associates Pllc
- **Organization subpart:** No
- **Authorized official:** Wendy Turner, CLINIC MANAGER
## Practice location
- **Address:** 1704 23RD AVE, 2ND FLR, Meridian, MS 39301-3103
- **Phone:** (601) 482-1555 · **Fax:** (601) 696-4611
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 4 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Hematology/Oncology (2), Medical Oncology (2); 4 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 11, 2017
- **Other identifiers:** Other 2586610; Other CF9149 (MS); Other 5939260001 (MS); and 1 more
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1164433678) · Data from the CMS NPPES public registry.