RENA SERIEUX M.D.
NPI 1427304666
Hospitalist in Sioux Falls, SD
About Rena Serieux M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RENA SERIEUX M.D. (NPI 1427304666) is an individual hospitalist provider in Sioux Falls, South Dakota, licensed in South Dakota (9547) and active in the NPI registry since July 2012. She is enrolled in Medicare PECOS, is affiliated with Unitypoint Health - Marshalltown, and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Rena Serieux M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Rena Serieux reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
West Des Moines, IA 50266
- Reassigned Medicare billing, Georgia and Texas enrollments
- 2 clinicians in this Medicare group
Grinnell, IA 50112
- Reassigned Medicare billing, Georgia enrollment
- 2 clinicians in this Medicare group
Dubuque, IA 52001
- Reassigned Medicare billing, Georgia enrollment
- 3 clinicians in this Medicare group
Peoria, IL 61636
- Reassigned Medicare billing, Texas enrollment
- 10 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
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Unitypoint Health - Marshalltown
Acute Care Hospitals · Marshalltown, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 57105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
SIOUX FALLS, SD 57105
SIOUX FALLS, SD 57105
SIOUX FALLS, SD 57105
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 Rena Serieux's NPI number?
The NPI number for Rena Serieux is 1427304666. It was assigned to this individual provider in the NPPES registry on July 25, 2012.
Where is Rena Serieux located?
Rena Serieux practices at 1305 W 18th St, Sioux Falls, SD 57105. The listed phone number is (605) 328-4973.
What is Rena Serieux's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Rena Serieux enrolled in Medicare?
Yes. Rena Serieux is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Rena Serieux's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rena Serieux reassigns Medicare benefits to 4 organizations: Iowa Physicians Clinic Medical Foundation (West Des Moines, IA), Grinnell Regional Medical Center (Grinnell, IA), The Finley Hospital (Dubuque, IA) and Methodist Medical Center Of Illinois (Peoria, IL). 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 Rena Serieux's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Rena Serieux accept?
Health plans from Oscar Insurance Company and Wellmark Health Plan of Iowa, Inc. list Rena Serieux 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.
Is Rena Serieux affiliated with any hospitals?
According to CMS data, Rena Serieux is affiliated with Unitypoint Health - Marshalltown.
When was this NPI record last updated?
The NPPES record for Rena Serieux was last updated on September 28, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Rena Serieux, M.D. · NPI 1427304666
Hospitalist physician in Sioux Falls, South Dakota. Individual provider, active in the CMS NPPES registry since July 25, 2012.
## Identity
- **NPI:** 1427304666 (Entity type: Individual)
- **Enumerated:** July 25, 2012
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 9547 (South Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 1305 W 18TH ST, Sioux Falls, SD 57105-0401
- **Phone:** (605) 328-4973
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Iowa Physicians Clinic Medical Foundation (NPI 1366425274, West Des Moines, IA); Grinnell Regional Medical Center (NPI 1437663242, Grinnell, IA); The Finley Hospital (NPI 1134176308, Dubuque, IA); Methodist Medical Center Of Illinois (NPI 1164474755, Peoria, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** September 28, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1427304666) · Data from the CMS NPPES public registry.