DR. WES JAMES IRWIN MD MS
NPI 1538166715
Anesthesiology in Reno, NV
About Dr. Wes James Irwin Md Ms NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WES JAMES IRWIN MD MS (NPI 1538166715) is an individual anesthesiology provider in Reno, Nevada, licensed in Nevada (10912) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, is affiliated with Renown Regional Medical Center, and is a graduate of Other (2000).
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
Dr. Wes James Irwin Md Ms 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
4Medicare enrollment records show Wes Irwin reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Reno, NV 89502
- Reassigned Medicare billing, Nevada enrollment
- 735 clinicians in this Medicare group
Reno, NV 89503
- Reassigned Medicare billing, Nevada enrollment
- 60 clinicians in this Medicare group
Reno, NV 89511
- Reassigned Medicare billing, Nevada enrollment
- 53 clinicians in this Medicare group
South Lake Tahoe, CA 96150
- Reassigned Medicare billing, California and Nevada enrollments
- 18 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Renown Regional Medical Center
Acute Care Hospitals · Reno, NVNorthern Nevada Medical Center
Acute Care Hospitals · Sparks, NVMedicare 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 4
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 Wes Irwin's NPI number?
The NPI number for Wes Irwin is 1538166715. It was assigned to this individual provider in the NPPES registry on July 4, 2005.
Where is Wes Irwin located?
Wes Irwin practices at 300 E 2nd St Ste 1230, Reno, NV 89501. The listed phone number is (530) 545-1175.
What is Wes Irwin's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Wes Irwin enrolled in Medicare?
Yes. Wes Irwin 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 Wes Irwin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Wes Irwin reassigns Medicare benefits to 4 organizations: Community Care Services LLC (Reno, NV), Metcalf, Tiller & Chen, Inc. (Reno, NV), Reno Tahoe Anesthesia Weaver PC (Reno, NV) and South Tahoe Anesthesia Medical Group (South Lake Tahoe, CA). 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 Wes Irwin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Wes Irwin affiliated with any hospitals?
According to CMS data, Wes Irwin is affiliated with Renown Regional Medical Center and Northern Nevada Medical Center.
When was this NPI record last updated?
The NPPES record for Wes Irwin was last updated on February 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# Dr. Wes James Irwin, MD MS · NPI 1538166715
Anesthesiology physician in Reno, Nevada. Individual provider, active in the CMS NPPES registry since July 4, 2005.
## Identity
- **NPI:** 1538166715 (Entity type: Individual)
- **Enumerated:** July 4, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 10912 (Nevada)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 300 E 2ND ST STE 1230, Reno, NV 89501-1587
- **Phone:** (530) 545-1175
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Community Care Services LLC (NPI 1780155309, Reno, NV); Metcalf, Tiller & Chen, Inc. (NPI 1811237431, Reno, NV); Reno Tahoe Anesthesia Weaver PC (NPI 1548816895, Reno, NV); South Tahoe Anesthesia Medical Group (NPI 1962513770, South Lake Tahoe, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2000
## Record status
- **NPPES last updated:** February 6, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1538166715) · Data from the CMS NPPES public registry.