DR. CHRISTEPHER DAVID YAO MD, MPH
NPI 1649237637
Emergency Medicine in Orange, CA
About Dr. Christepher David Yao Md, Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHRISTEPHER DAVID YAO MD, MPH (NPI 1649237637) is an individual emergency medicine provider in Orange, California, licensed in California (A94000) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS and is a graduate of Other (2004).
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. Christepher David Yao Md, Mph 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 Christepher Yao 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
- 97 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 5
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 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
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 Christepher Yao's NPI number?
The NPI number for Christepher Yao is 1649237637. It was assigned to this individual provider in the NPPES registry on April 26, 2006.
Where is Christepher Yao located?
Christepher Yao practices at 1010 W La Veta Ave Suite 755, Orange, CA 92868. The listed phone number is (714) 543-8911.
What is Christepher Yao's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Christepher Yao enrolled in Medicare?
Yes. Christepher Yao 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 Christepher Yao's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christepher Yao reassigns Medicare benefits to Emergency Medicine Specialists Of Orange County (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 Christepher Yao'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 Christepher Yao was last updated on March 8, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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. Christepher David Yao, MD, MPH · NPI 1649237637
Emergency Medicine physician in Orange, California. Individual provider, active in the CMS NPPES registry since April 26, 2006.
## Identity
- **NPI:** 1649237637 (Entity type: Individual)
- **Enumerated:** April 26, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A94000 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1010 W LA VETA AVE, SUITE 755, Orange, CA 92868-4300
- **Phone:** (714) 543-8911
## 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:** Emergency Medicine Specialists Of Orange County (NPI 1740214733, Orange, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2004
## Record status
- **NPPES last updated:** March 8, 2013
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Source: [NPI Profile](https://npiprofile.com/npi/1649237637) · Data from the CMS NPPES public registry.