DR. SILAS CHUN-WING CHIU M.D.
NPI 1023370525
Emergency Medicine in Fontana, CA
About Dr. Silas Chun-wing Chiu M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SILAS CHUN-WING CHIU M.D. (NPI 1023370525) is an individual emergency medicine provider in Fontana, California, licensed in California (A127295) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS and is a graduate of Loma Linda University School Of Medicine (2012).
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. Silas Chun-wing Chiu M.d. 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
2Medicare enrollment records show Silas Chiu reassigns Medicare billing to 2 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
Norwalk, CA 90650
- Reassigned Medicare billing, California enrollment
- 47 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 2
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.
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 Silas Chiu's NPI number?
The NPI number for Silas Chiu is 1023370525. It was assigned to this individual provider in the NPPES registry on June 11, 2012.
Where is Silas Chiu located?
Silas Chiu practices at 9961 Sierra Ave, Fontana, CA 92335. The listed phone number is (909) 427-5000.
What is Silas Chiu's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Silas Chiu enrolled in Medicare?
Yes. Silas Chiu 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 Silas Chiu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Silas Chiu reassigns Medicare benefits to 2 organizations: Southern California Permanente Medical Group (Fontana, CA) and Coast Plaza Emergency Physicians Group Inc (Norwalk, 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 Silas Chiu'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 Silas Chiu was last updated on December 6, 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.
# Dr. Silas Chun-Wing Chiu, M.D. · NPI 1023370525
Emergency Medicine physician in Fontana, California. Individual provider, active in the CMS NPPES registry since June 11, 2012.
## Identity
- **NPI:** 1023370525 (Entity type: Individual)
- **Enumerated:** June 11, 2012
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A127295 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 9961 SIERRA AVE, Fontana, CA 92335-6720
- **Phone:** (909) 427-5000 · **Fax:** (310) 782-1763
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Southern California Permanente Medical Group (NPI 1689606196, Fontana, CA); Coast Plaza Emergency Physicians Group Inc (NPI 1912308446, Norwalk, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Loma Linda University School Of Medicine, class of 2012
## Record status
- **NPPES last updated:** December 6, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1023370525) · Data from the CMS NPPES public registry.