RIANNON HERR APRN
NPI 1578342010
Nurse Practitioner - Critical Care Medicine in Indianapolis, IN
About Riannon Herr Aprn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RIANNON HERR APRN (NPI 1578342010) is an individual critical care medicine provider in Indianapolis, Indiana, licensed in Nevada (861707) and active in the NPI registry since September 2023. She is enrolled in Medicare PECOS, is affiliated with Eskenazi Health, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 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
Riannon Herr Aprn 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
2Medicare enrollment records show Riannon Herr reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 386 clinicians in this Medicare group
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 5,212 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 3
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.
Eskenazi Health
Acute Care Hospitals · Indianapolis, INPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 46202 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 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 Riannon Herr's NPI number?
The NPI number for Riannon Herr is 1578342010. It was assigned to this individual provider in the NPPES registry on September 25, 2023.
Where is Riannon Herr located?
Riannon Herr practices at 720 Eskenazi Ave, Indianapolis, IN 46202. The listed phone number is (317) 880-7666.
What is Riannon Herr's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Critical Care Medicine, with taxonomy code 363LC0200X.
Is Riannon Herr enrolled in Medicare?
Yes. Riannon Herr 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 Riannon Herr's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Riannon Herr reassigns Medicare benefits to 2 organizations: Eskenazi Medical Group Inc (Indianapolis, IN) and Iu Health Medical Group, LLC (Indianapolis, IN). 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 Riannon Herr's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Riannon Herr accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, CareSource and Cigna Healthcare list Riannon Herr 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 Riannon Herr affiliated with any hospitals?
According to CMS data, Riannon Herr is affiliated with Eskenazi Health.
When was this NPI record last updated?
The NPPES record for Riannon Herr was last updated on December 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.
# Riannon Herr, APRN · NPI 1578342010
Critical Care Medicine physician in Indianapolis, Indiana. Individual provider, active in the CMS NPPES registry since September 25, 2023.
## Identity
- **NPI:** 1578342010 (Entity type: Individual)
- **Enumerated:** September 25, 2023
- **Primary specialty:** Nurse Practitioner - Critical Care Medicine · taxonomy 363LC0200X
- **State license:** 861707 (Nevada)
- **Sole proprietor:** No
## Practice location
- **Address:** 720 ESKENAZI AVE, Indianapolis, IN 46202-5187
- **Phone:** (317) 880-7666
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Eskenazi Medical Group Inc (NPI 1730451063, Indianapolis, IN); Iu Health Medical Group, LLC (NPI 1326893777, Indianapolis, IN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** December 19, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1578342010) · Data from the CMS NPPES public registry.