RYAN O'NEILL D.O.
NPI 1104080175
Emergency Medicine in Las Vegas, NV
About Ryan O'neill D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RYAN O'NEILL D.O. (NPI 1104080175) is an individual emergency medicine provider in Las Vegas, Nevada, licensed in Nevada (DO1804) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS, is affiliated with Ns/lij Hs Huntington Hospital, and is a graduate of Other (2008).
NPPES Registry Identity
Specialties & Licenses
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
Ryan O'neill D.o. 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
7Medicare enrollment records show Ryan O'neill reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cooperstown, NY 13326
- Reassigned Medicare billing, New York enrollment
- 1,052 clinicians in this Medicare group
Delhi, NY 13753
- Reassigned Medicare billing, New York enrollment
- 199 clinicians in this Medicare group
Little Falls, NY 13365
- Reassigned Medicare billing, New York enrollment
- 202 clinicians in this Medicare group
Harris, NY 12742
- Reassigned Medicare billing, New York enrollment
- 75 clinicians in this Medicare group
Cobleskill, NY 12043
- Reassigned Medicare billing, New York enrollment
- 202 clinicians in this Medicare group
Far Rockaway, NY 11691
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Island Emergency Medical Services PC
- 290 clinicians in this Medicare group
Great Neck, NY 11021
- Reassigned Medicare billing, New York enrollment
- 9,353 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 4
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ns/Lij Hs Huntington Hospital
Acute Care Hospitals · Huntington, NYAurelia Osborn Fox Memorial Hospital
Acute Care Hospitals · Oneonta, NYEllis Hospital
Acute Care Hospitals · Schenectady, NYNorthwell Hospital Glen Cove
Acute Care Hospitals · Glen Cove, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 89107 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
LAS VEGAS, NV 89107
LAS VEGAS, NV 89107
LAS VEGAS, NV 89107
LAS VEGAS, NV 89107
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 Ryan O'neill's NPI number?
The NPI number for Ryan O'neill is 1104080175. It was assigned to this individual provider in the NPPES registry on July 17, 2008.
Where is Ryan O'neill located?
Ryan O'neill practices at 500 N Rainbow Blvd Suite 203, Las Vegas, NV 89107. The listed phone number is (702) 259-1228.
What is Ryan O'neill's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Ryan O'neill enrolled in Medicare?
Yes. Ryan O'neill 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 Ryan O'neill's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ryan O'neill reassigns Medicare benefits to 7 organizations: Mary Imogene Bassett Hospital (Cooperstown, NY), O'connor Hospital (Delhi, NY), Little Falls Hospital (Little Falls, NY), Sullivan Emergency Services PC (Harris, NY), Bassett Hospital Of Schoharie County (Cobleskill, NY) and 2 more organizations, listed in the Medicare section above. 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 Ryan O'neill's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Ryan O'neill affiliated with any hospitals?
According to CMS data, Ryan O'neill is affiliated with Ns/Lij Hs Huntington Hospital, Aurelia Osborn Fox Memorial Hospital, Ellis Hospital and Northwell Hospital Glen Cove.
When was this NPI record last updated?
The NPPES record for Ryan O'neill was last updated on February 25, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Ryan O'neill, D.O. · NPI 1104080175
Emergency Medicine physician in Las Vegas, Nevada. Individual provider, active in the CMS NPPES registry since July 17, 2008.
## Identity
- **NPI:** 1104080175 (Entity type: Individual)
- **Enumerated:** July 17, 2008
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** DO1804 (Nevada)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 500 N RAINBOW BLVD, SUITE 203, Las Vegas, NV 89107-1082
- **Phone:** (702) 259-1228
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Mary Imogene Bassett Hospital (NPI 1083664221, Cooperstown, NY); O'connor Hospital (NPI 1891728192, Delhi, NY); Little Falls Hospital (NPI 1558321919, Little Falls, NY); Sullivan Emergency Services PC (NPI 1528338480, Harris, NY); Bassett Hospital Of Schoharie County (NPI 1891862579, Cobleskill, NY); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** February 25, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1104080175) · Data from the CMS NPPES public registry.