DIANA HSU
NPI 1386140440
Student in an Organized Health Care Education/Training Program in Oakland, CA
About Diana Hsu NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANA HSU (NPI 1386140440) is an individual student in an organized health care education/training program in Oakland, California and active in the NPI registry since April 2018. She is enrolled in Medicare PECOS and is a graduate of Other (2018).
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 (PECOS)
Diana Hsu is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Diana Hsu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Oxnard, CA 93036
- Reassigned Medicare billing, California enrollment
- 13,921 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.
OAKLAND, CA 94602
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 Diana Hsu's NPI number?
The NPI number for Diana Hsu is 1386140440. It was assigned to this individual provider in the NPPES registry on April 5, 2018.
Where is Diana Hsu located?
Diana Hsu practices at 1411 E 31st St, Oakland, CA 94602. The listed phone number is (510) 437-4965.
What is Diana Hsu's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Diana Hsu enrolled in Medicare?
Yes. Diana Hsu is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Diana Hsu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diana Hsu reassigns Medicare benefits to Southern California Permanente Medical Group (Oxnard, 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 Diana Hsu'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 Diana Hsu was last updated on April 5, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Diana Hsu · NPI 1386140440
Student in an Organized Health Care Education/Training Program provider in Oakland, California. Individual provider, active in the CMS NPPES registry since April 5, 2018.
## Identity
- **NPI:** 1386140440 (Entity type: Individual)
- **Enumerated:** April 5, 2018
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1411 E 31ST ST, Oakland, CA 94602-1018
- **Phone:** (510) 437-4965
## 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:** Southern California Permanente Medical Group (NPI 1275756652, Oxnard, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** April 5, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1386140440) · Data from the CMS NPPES public registry.