CLAY WU D.O.
NPI 1184002420
Internal Medicine - Critical Care Medicine in Los Angeles, CA
About Clay Wu D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CLAY WU D.O. (NPI 1184002420) is an individual critical care medicine provider in Los Angeles, California, licensed in California (20A15317) and active in the NPI registry since May 2015. He is enrolled in Medicare PECOS and is a graduate of Touro Un College Of Osteopathic Medicine, Vallejo (2015).
NPPES Registry Identity
Specialties & Licenses 2
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
Clay Wu D.o. 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
2Medicare enrollment records show Clay Wu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 1,216 clinicians in this Medicare group
Gilroy, CA 95020
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1629301346 (California), NPI 1588721500 (California)
- 2,460 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 2
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 90033 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.
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
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 Clay Wu's NPI number?
The NPI number for Clay Wu is 1184002420. It was assigned to this individual provider in the NPPES registry on May 6, 2015.
Where is Clay Wu located?
Clay Wu practices at 2051 Marengo St, Los Angeles, CA 90033. The listed phone number is (323) 409-1000.
What is Clay Wu's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Clay Wu enrolled in Medicare?
Yes. Clay 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 Clay Wu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Clay Wu reassigns Medicare benefits to 2 organizations: Inpatient Specialists Of California, PC (San Bernardino, CA) and County Of Santa Clara (Gilroy, CA). 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 Clay 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 Clay Wu was last updated on April 5, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Clay Wu, D.O. · NPI 1184002420
Critical Care Medicine physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since May 6, 2015.
## Identity
- **NPI:** 1184002420 (Entity type: Individual)
- **Enumerated:** May 6, 2015
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 20A15317 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2051 MARENGO ST, Los Angeles, CA 90033
- **Phone:** (323) 409-1000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Inpatient Specialists Of California, PC (NPI 1952792475, San Bernardino, CA); County Of Santa Clara (NPI 1922093533, Gilroy, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Touro Un College Of Osteopathic Medicine, Vallejo, class of 2015
## Record status
- **NPPES last updated:** April 5, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1184002420) · Data from the CMS NPPES public registry.