Riannon Herr, APRN
NPI 1578342010 · Critical Care Medicine Nurse Practitioner · Indianapolis, IN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Riannon Herr, APRN is a Critical Care Medicine Nurse Practitioner provider in Indianapolis, IN (NPI 1578342010).
Provider details
- NPI number
- 1578342010
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- No
- License
- 861707 (NV)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
2 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
185 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 131 | $142 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 34 | $96 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 20 | $65 |
Typical Medicare-allowed amounts for these services range $65–$142 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (2)
- 1701 N Senate BlvdIndianapolis, IN 46202-1239Phone: (317) 944-5000
- 715 Mall Ring Cir Ste 202Henderson, NV 89014-6667Phone: (702) 483-6200
Registry dates
- Enumerated
- 2023-09-25
- Last updated
- 2025-12-19
- Certified
- 2025-12-19
Frequently asked questions
- What is Riannon Herr's NPI number?
- Riannon Herr's National Provider Identifier (NPI) is 1578342010, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Riannon Herr's specialty?
- Riannon Herr is listed in the NPPES registry with a primary specialty of Critical Care Medicine Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Riannon Herr located?
- Riannon Herr's practice location on file with NPPES is 720 Eskenazi Ave, Indianapolis, IN 46202-5187.
- What is Riannon Herr's phone number?
- The practice phone number listed in the NPPES registry for Riannon Herr is (317) 880-7666.
- Does Riannon Herr accept Medicare?
- Riannon Herr is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Riannon Herr's NPI active?
- Yes — Riannon Herr's NPI (1578342010) is active in the NPPES registry as of the last update on 2025-12-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.