DR. ERIKA LYNN O'BRIEN DNP, AGACNP-BC, CCRN
NPI 1255904322
Nurse Practitioner - Gerontology in Rock Island, IL
About Dr. Erika Lynn O'brien Dnp, Agacnp-bc, Ccrn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ERIKA LYNN O'BRIEN DNP, AGACNP-BC, CCRN (NPI 1255904322) is an individual gerontology provider in Rock Island, Illinois, licensed in Illinois (041426969) and active in the NPI registry since July 2021. She is enrolled in Medicare PECOS, is affiliated with Trinity Rock Island, and is a graduate of University Of Illinois College Of Med (chi/peor/rock/chm-urb) (2021).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Erika Lynn O'brien Dnp, Agacnp-bc, Ccrn 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 Reassignment
Medicare enrollment records show Erika O'brien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Rock Island, IL 61201
- Reassigned Medicare billing, Iowa and Illinois enrollments
- 138 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Trinity Rock Island
Acute Care Hospitals · Rock Island, ILTrinity Muscatine
Acute Care Hospitals · Muscatine, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 61201 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Erika O'brien's NPI number?
The NPI number for Erika O'brien is 1255904322. It was assigned to this individual provider in the NPPES registry on July 19, 2021.
Where is Erika O'brien located?
Erika O'brien practices at 2570 24th St Ste 24, Rock Island, IL 61201. The listed phone number is (309) 779-3670.
What is Erika O'brien's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Gerontology, with taxonomy code 363LG0600X.
Is Erika O'brien enrolled in Medicare?
Yes. Erika O'brien 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 organization bills Medicare for Erika O'brien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Erika O'brien reassigns Medicare benefits to Trinity Medical Center (Rock Island, IL). 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 Erika O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Erika O'brien accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Wellmark Health Plan of Iowa, Inc. list Erika O'brien 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 Erika O'brien affiliated with any hospitals?
According to CMS data, Erika O'brien is affiliated with Trinity Rock Island and Trinity Muscatine.
When was this NPI record last updated?
The NPPES record for Erika O'brien was last updated on July 19, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Erika Lynn O'brien, DNP, AGACNP-BC, CCRN · NPI 1255904322
Gerontology physician in Rock Island, Illinois. Individual provider, active in the CMS NPPES registry since July 19, 2021.
## Identity
- **NPI:** 1255904322 (Entity type: Individual)
- **Enumerated:** July 19, 2021
- **Primary specialty:** Nurse Practitioner - Gerontology · taxonomy 363LG0600X
- **State license:** 041426969 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 2570 24TH ST STE 24, Rock Island, IL 61201-5394
- **Phone:** (309) 779-3670
## 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:** Trinity Medical Center (NPI 1568414134, Rock Island, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Illinois College Of Med, class of 2021
## Record status
- **NPPES last updated:** July 19, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1255904322) · Data from the CMS NPPES public registry.