CHARLES W MASON M.D.
NPI 1124039193
Internal Medicine in Monroe, LA
About Charles W Mason M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHARLES W MASON M.D. (NPI 1124039193) is an individual internal medicine provider in Monroe, Louisiana, licensed in Louisiana (017714) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Monroe.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Charles W Mason M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Charles Mason reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Monroe, LA 71201
- Reassigned Medicare billing, Louisiana enrollment
- 156 clinicians in this Medicare group
Ruston, LA 71270
- Reassigned Medicare billing, Louisiana enrollment
- 42 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.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 71201 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Charles Mason's NPI number?
The NPI number for Charles Mason is 1124039193. It was assigned to this individual provider in the NPPES registry on August 11, 2006.
Where is Charles Mason located?
Charles Mason practices at 920 Oliver Rd, Monroe, LA 71201. The listed phone number is (318) 807-4730.
What is Charles Mason's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Charles Mason enrolled in Medicare?
Yes. Charles Mason is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Charles Mason's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Charles Mason reassigns Medicare benefits to 2 organizations: Affinity Health Group LLC (Monroe, LA) and Northern Louisiana Emergency Physicians LLP (Ruston, LA). Each 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 Charles Mason's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Charles Mason accept?
Health plans from CHRISTUS Health Plan and HMO Louisiana list Charles Mason 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 Charles Mason was last updated on February 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Charles W Mason, M.D. · NPI 1124039193
Internal Medicine physician in Monroe, Louisiana. Individual provider, active in the CMS NPPES registry since August 11, 2006.
## Identity
- **NPI:** 1124039193 (Entity type: Individual)
- **Enumerated:** August 11, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 017714 (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 920 OLIVER RD, Monroe, LA 71201-5702
- **Phone:** (318) 807-4730 · **Fax:** (318) 812-6450
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Affinity Health Group LLC (NPI 1053957944, Monroe, LA); Northern Louisiana Emergency Physicians LLP (NPI 1598995847, Ruston, LA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 7, 2023
- **Other identifiers:** Medicaid 1347744 (LA)
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Source: [NPI Profile](https://npiprofile.com/npi/1124039193) · Data from the CMS NPPES public registry.