MR. GARRETT JAMES KERWIN CRNA
NPI 1467868703
Nurse Anesthetist, Certified Registered in Fontana, CA
About Mr. Garrett James Kerwin Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. GARRETT JAMES KERWIN CRNA (NPI 1467868703) is an individual nurse anesthetist, certified registered in Fontana, California, licensed in California (95000227) and active in the NPI registry since July 2014. He is affiliated with West Virginia University Hospitals, Inc and is a graduate of Other (2014).
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
Mr. Garrett James Kerwin Crna 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
3Medicare enrollment records show Garrett Kerwin reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fontana, CA 92335
- Reassigned Medicare billing, California enrollment
- 5,228 clinicians in this Medicare group
Irving, TX 75038
- Reassigned Medicare billing, West Virginia enrollment
- 263 clinicians in this Medicare group
Bridgeport, WV 26330
- Reassigned Medicare billing, West Virginia enrollment
- Medicare enrollment name: West Virginia University Medical Corporation
- 2,471 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.
West Virginia University Hospitals, Inc
Acute Care Hospitals · Morgantown, WVMon Health Medical Center
Acute Care Hospitals · Morgantown, WVPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92335 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
FONTANA, CA 92335
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 Garrett Kerwin's NPI number?
The NPI number for Garrett Kerwin is 1467868703. It was assigned to this individual provider in the NPPES registry on July 8, 2014.
Where is Garrett Kerwin located?
Garrett Kerwin practices at 9961 Sierra Ave, Fontana, CA 92335. The listed phone number is (909) 427-5000.
What is Garrett Kerwin's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Garrett Kerwin enrolled in Medicare?
Yes. Garrett Kerwin 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 Garrett Kerwin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Garrett Kerwin reassigns Medicare benefits to 3 organizations: Southern California Permanente Medical Group (Fontana, CA), Northstar Anesthesia Of West Virginia, PLLC (Irving, TX) and Wvu Medical Corporation (Bridgeport, WV). 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 Garrett Kerwin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Garrett Kerwin accept?
Health plans from Peak Health Insurance list Garrett Kerwin 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 Garrett Kerwin affiliated with any hospitals?
According to CMS data, Garrett Kerwin is affiliated with West Virginia University Hospitals, Inc and Mon Health Medical Center.
When was this NPI record last updated?
The NPPES record for Garrett Kerwin was last updated on November 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Mr. Garrett James Kerwin, CRNA · NPI 1467868703
Nurse Anesthetist, Certified Registered physician in Fontana, California. Individual provider, active in the CMS NPPES registry since July 8, 2014.
## Identity
- **NPI:** 1467868703 (Entity type: Individual)
- **Enumerated:** July 8, 2014
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 95000227 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 9961 SIERRA AVE, Fontana, CA 92335-6720
- **Phone:** (909) 427-5000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Southern California Permanente Medical Group (NPI 1689606196, Fontana, CA); Northstar Anesthesia Of West Virginia, PLLC (NPI 1821448150, Irving, TX); Wvu Medical Corporation (NPI 1245625581, Bridgeport, WV) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** November 29, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1467868703) · Data from the CMS NPPES public registry.