MARIAM RIAD MD
NPI 1255891610
Internal Medicine - Interventional Cardiology in Alexandria, LA
About Mariam Riad Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIAM RIAD MD (NPI 1255891610) is an individual interventional cardiology provider in Alexandria, Louisiana, licensed in Louisiana (349178) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mariam Riad Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mariam Riad reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Tyler, TX 75702
- Reassigned Medicare billing, Louisiana enrollment
- 213 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 71301 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ALEXANDRIA, LA 71301
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 Mariam Riad's NPI number?
The NPI number for Mariam Riad is 1255891610. It was assigned to this individual provider in the NPPES registry on March 21, 2019.
Where is Mariam Riad located?
Mariam Riad practices at 3311 Prescott Rd Ste 318, Alexandria, LA 71301. The listed phone number is (318) 528-5500.
What is Mariam Riad's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.
Is Mariam Riad enrolled in Medicare?
Yes. Mariam Riad is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mariam Riad's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mariam Riad reassigns Medicare benefits to Christus Trinity Clinic Texas (Tyler, TX). 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 Mariam Riad'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 Mariam Riad was last updated on September 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 42 days 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.
# Mariam Riad, MD · NPI 1255891610
Interventional Cardiology physician in Alexandria, Louisiana. Individual provider, active in the CMS NPPES registry since March 21, 2019.
## Identity
- **NPI:** 1255891610 (Entity type: Individual)
- **Enumerated:** March 21, 2019
- **Primary specialty:** Internal Medicine - Interventional Cardiology · taxonomy 207RI0011X
- **State license:** 349178 (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 3311 PRESCOTT RD STE 318, Alexandria, LA 71301-3984
- **Phone:** (318) 528-5500
## 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:** Christus Trinity Clinic Texas (NPI 1285684225, Tyler, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 17, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1255891610) · Data from the CMS NPPES public registry.