STEPHEN S. WEST MD
NPI 1194873075
Surgery - Surgery of the Hand in Fontana, CA
About Stephen S. West Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEPHEN S. WEST MD (NPI 1194873075) is an individual surgery of the hand provider in Fontana, California, licensed in California (G78623) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS and is a graduate of Loma Linda University School Of Medicine (1992).
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
Stephen S. West Md 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 Stephen West reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fontana, CA 92335
- Reassigned Medicare billing, California enrollment
- 5,228 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.
Physician 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 Stephen West's NPI number?
The NPI number for Stephen West is 1194873075. It was assigned to this individual provider in the NPPES registry on January 8, 2007.
Where is Stephen West located?
Stephen West practices at 9961 Sierra Ave, Fontana, CA 92335. The listed phone number is (909) 427-3910.
What is Stephen West's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Surgery of the Hand, with taxonomy code 2086S0105X.
Is Stephen West enrolled in Medicare?
Yes. Stephen West 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 Stephen West's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephen West reassigns Medicare benefits to Southern California Permanente Medical Group (Fontana, CA). 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 Stephen West's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Stephen West was last updated on December 1, 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.
# Stephen S. West, MD · NPI 1194873075
Surgery of the Hand physician in Fontana, California. Individual provider, active in the CMS NPPES registry since January 8, 2007.
## Identity
- **NPI:** 1194873075 (Entity type: Individual)
- **Enumerated:** January 8, 2007
- **Primary specialty:** Surgery - Surgery of the Hand · taxonomy 2086S0105X
- **State license:** G78623 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 9961 SIERRA AVE, Fontana, CA 92335-6720
- **Phone:** (909) 427-3910
## 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:** Southern California Permanente Medical Group (NPI 1689606196, Fontana, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Loma Linda University School Of Medicine, class of 1992
## Record status
- **NPPES last updated:** December 1, 2021
---
Source: [NPI Profile](https://npiprofile.com/npi/1194873075) · Data from the CMS NPPES public registry.