RUBY CHIEN MD
NPI 1417650227
Internal Medicine in Orange, CA
About Ruby Chien Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUBY CHIEN MD (NPI 1417650227) is an individual internal medicine provider in Orange, California, licensed in California (A201192) and active in the NPI registry since March 2023. She is enrolled in Medicare PECOS and is a graduate of University Of Illinois College Of Med (chi/peor/rock/chm-urb) (2023).
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
Ruby Chien 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 Ruby Chien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 250 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 92868 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.
ORANGE, CA 92868
ORANGE, CA 92868
ORANGE, CA 92868
ORANGE, CA 92868
ORANGE, CA 92868
ORANGE, CA 92868
ORANGE, CA 92868
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 Ruby Chien's NPI number?
The NPI number for Ruby Chien is 1417650227. It was assigned to this individual provider in the NPPES registry on March 22, 2023.
Where is Ruby Chien located?
Ruby Chien practices at 101 The City Dr S Ste 400, Orange, CA 92868. The listed phone number is (714) 456-5691.
What is Ruby Chien's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ruby Chien enrolled in Medicare?
Yes. Ruby Chien 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 Ruby Chien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ruby Chien reassigns Medicare benefits to The Regents Of The University Of California-Irvine (Orange, 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 Ruby Chien'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 Ruby Chien was last updated on March 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Ruby Chien, MD · NPI 1417650227
Internal Medicine physician in Orange, California. Individual provider, active in the CMS NPPES registry since March 22, 2023.
## Identity
- **NPI:** 1417650227 (Entity type: Individual)
- **Enumerated:** March 22, 2023
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A201192 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 101 THE CITY DR S STE 400, Orange, CA 92868-3201
- **Phone:** (714) 456-5691
## 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:** The Regents Of The University Of California-Irvine (NPI 1154479723, Orange, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Illinois College Of Med, class of 2023
## Record status
- **NPPES last updated:** March 23, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1417650227) · Data from the CMS NPPES public registry.