DR. CHARLES KLEIN YU M.D.
NPI 1164809620
Student in an Organized Health Care Education/Training Program in San Diego, CA
About Dr. Charles Klein Yu M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHARLES KLEIN YU M.D. (NPI 1164809620) is an individual student in an organized health care education/training program in San Diego, California and active in the NPI registry since May 2015. He is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2015).
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. Charles Klein Yu 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 Reassignment
Medicare enrollment records show Charles Yu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Laguna Hills, CA 92653
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1407487531 (California)
- 116 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.
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.
SAN DIEGO, CA 92120
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 Charles Yu's NPI number?
The NPI number for Charles Yu is 1164809620. It was assigned to this individual provider in the NPPES registry on May 4, 2015.
Where is Charles Yu located?
Charles Yu practices at 4647 Zion Ave, San Diego, CA 92120. The listed phone number is (858) 573-6401.
What is Charles Yu's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Charles Yu enrolled in Medicare?
Yes. Charles Yu 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 Charles Yu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Charles Yu reassigns Medicare benefits to Health Diagnostics Of California A Professional Corporation (Laguna Hills, 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 Charles Yu'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 Charles Yu was last updated on May 4, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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. Charles Klein Yu, M.D. · NPI 1164809620
Student in an Organized Health Care Education/Training Program provider in San Diego, California. Individual provider, active in the CMS NPPES registry since May 4, 2015.
## Identity
- **NPI:** 1164809620 (Entity type: Individual)
- **Enumerated:** May 4, 2015
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **Sole proprietor:** No
## Practice location
- **Address:** 4647 ZION AVE, San Diego, CA 92120-2507
- **Phone:** (858) 573-6401
## 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:** Health Diagnostics Of California A Professional Corporation (NPI 1245861368, Laguna Hills, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Geffen School Of Medicine, class of 2015
## Record status
- **NPPES last updated:** May 4, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1164809620) · Data from the CMS NPPES public registry.