ARNOLD YIN FAI SIN M.D
NPI 1649212408
Emergency Medicine in Colton, CA
About Arnold Yin Fai Sin M.d NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ARNOLD YIN FAI SIN M.D (NPI 1649212408) is an individual emergency medicine provider in Colton, California, licensed in California (G60935) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Arnold Yin Fai Sin M.d is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Arnold Sin reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Colton, CA 92324
- Reassigned Medicare billing, California enrollment
- 2,323 clinicians in this Medicare group
Corona, CA 92882
- Reassigned Medicare billing, California enrollment
- 114 clinicians in this Medicare group
Inglewood, CA 90301
- Reassigned Medicare billing, California enrollment
- 111 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 9
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 92324 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare 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.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
COLTON, CA 92324
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 Arnold Sin's NPI number?
The NPI number for Arnold Sin is 1649212408. It was assigned to this individual provider in the NPPES registry on June 12, 2006.
Where is Arnold Sin located?
Arnold Sin practices at 400 N Pepper Ave, Colton, CA 92324. The listed phone number is (909) 580-1400.
What is Arnold Sin's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Arnold Sin enrolled in Medicare?
Yes. Arnold Sin is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Arnold Sin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Arnold Sin reassigns Medicare benefits to 3 organizations: Cep America - California (Colton, CA), Corona Regional Emergency Medical Associates Inc (Corona, CA) and Centinela Freeman Emergency Medical Associates, Inc. (Inglewood, 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 Arnold Sin'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 Arnold Sin was last updated on July 25, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Arnold Yin Fai Sin, M.D · NPI 1649212408
Emergency Medicine physician in Colton, California. Individual provider, active in the CMS NPPES registry since June 12, 2006.
## Identity
- **NPI:** 1649212408 (Entity type: Individual)
- **Enumerated:** June 12, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** G60935 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 400 N PEPPER AVE, Colton, CA 92324-1801
- **Phone:** (909) 580-1400
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Cep America - California (NPI 1306899166, Colton, CA); Corona Regional Emergency Medical Associates Inc (NPI 1134629298, Corona, CA); Centinela Freeman Emergency Medical Associates, Inc. (NPI 1528333101, Inglewood, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 25, 2012
- **Other identifiers:** Medicaid 00G609350 (CA); Medicare PIN WG60935F (CA); Medicare UPIN A53625 (CA); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1649212408) · Data from the CMS NPPES public registry.