CHEN YING WU MD
NPI 1144576299
Psychiatry & Neurology - Psychiatry in Diamond Bar, CA
About Chen Ying Wu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHEN YING WU MD (NPI 1144576299) is an individual psychiatry provider in Diamond Bar, California, licensed in California (A133011) and active in the NPI registry since July 2012. She is enrolled in Medicare PECOS, maintains a secondary practice location in Fullerton, and is a graduate of Other (2023).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Chen Ying Wu 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 Reassignments
5Medicare enrollment records show Chen Ying Wu reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Covina, CA 91722
- Reassigned Medicare billing, California enrollment
- 194 clinicians in this Medicare group
Norwalk, CA 90650
- Reassigned Medicare billing, California enrollment
- 755 clinicians in this Medicare group
Monterey Park, CA 91754
- Reassigned Medicare billing, California enrollment
- 5 clinicians in this Medicare group
Westlake Village, CA 91362
- Reassigned Medicare billing, California enrollment
- 87 clinicians in this Medicare group
East Liverpool, OH 43920
- Reassigned Medicare billing, Pennsylvania enrollment
- 7,114 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 91765 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Chen Ying Wu's NPI number?
The NPI number for Chen Ying Wu is 1144576299. It was assigned to this individual provider in the NPPES registry on July 26, 2012.
Where is Chen Ying Wu located?
Chen Ying Wu practices at 21015 Pathfinder Rd Ste 101, Diamond Bar, CA 91765. The listed phone number is (999) 999-9999.
What is Chen Ying Wu's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Chen Ying Wu enrolled in Medicare?
Yes. Chen Ying Wu 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 organizations bill Medicare for Chen Ying Wu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Chen Ying Wu reassigns Medicare benefits to 5 organizations: Inland Psychiatric Medical Group, Inc. (Covina, CA), Department Of State Hospitals (Norwalk, CA), M & H Provider Services, LLC (Monterey Park, CA), Pacific Heritage Medical Group Inc (Westlake Village, CA) and University Of Pittsburgh Physicians (East Liverpool, OH). 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 Chen Ying Wu'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 Chen Ying Wu was last updated on October 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Chen Ying Wu, MD · NPI 1144576299
Psychiatry physician in Diamond Bar, California. Individual provider, active in the CMS NPPES registry since July 26, 2012.
## Identity
- **NPI:** 1144576299 (Entity type: Individual)
- **Enumerated:** July 26, 2012
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** A133011 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 21015 PATHFINDER RD STE 101, Diamond Bar, CA 91765-4002
- **Phone:** (999) 999-9999
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Inland Psychiatric Medical Group, Inc. (NPI 1245816198, Covina, CA); Department Of State Hospitals (NPI 1265406565, Norwalk, CA); M & H Provider Services, LLC (NPI 1336974039, Monterey Park, CA); Pacific Heritage Medical Group Inc (NPI 1467899450, Westlake Village, CA); University Of Pittsburgh Physicians (NPI 1811945793, East Liverpool, OH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** October 10, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1144576299) · Data from the CMS NPPES public registry.