John Isaiah Oreilly, M.D.
Infectious Disease (CMS) · Las Vegas, NV
At a glance
2435 Fire Mesa St Ste 120, Las Vegas, NV 89128-9009
NPPES record updated Sep 24, 2021. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
2435 Fire Mesa St Ste 120Las Vegas, NV 89128-9009
Education & affiliations
- Medical / professional school
- Tulane University School Of Medicine
- Graduation year
- 2016
- CMS specialties
- Infectious Disease
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
Reported hospital affiliations
- Mountainview Hospital Las Vegas, NV
- Saint Rose Dominican Hospitals - Siena Campus Henderson, NV
- Southern Hills Hospital And Medical Center Las Vegas, NV
- Sunrise Hospital And Medical Center Las Vegas, NV
- Valley Hospital Medical Center Las Vegas, NV
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $756.63 |
Reporting companies
| Company | Amount |
|---|---|
| MELINTA THERAPEUTICS, LLC | $165.83 |
| GLAXOSMITHKLINE, LLC. | $160.63 |
| SHIONOGI INC | $153.73 |
| PFIZER INC. | $99.70 |
| VIIV HEALTHCARE COMPANY | $79.15 |
| MERCK SHARP & DOHME LLC | $53.93 |
| ABBVIE INC. | $30.01 |
| INSMED, INC. | $13.65 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Infectious Disease (CMS)
- Taxonomy code
- 207RI0200X
- Enumeration date
- Jun 30, 2009
- Record updated
- Sep 24, 2021
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207R00000X
License reported: 21365 NV
207RI0200X · Primary
License reported: 21365 NV
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
2435 Fire Mesa St Ste 120Las Vegas, NV 89128-9009
- Phone
- (702) 968-2437
- Fax
- (702) 479-1796
Mailing address
622 W 168TH STNEW YORK, NY 100323720
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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