MAIRWEN CHIU
NPI 1780189787
Marriage & Family Therapist in Lompoc, CA
About Mairwen Chiu NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MAIRWEN CHIU (NPI 1780189787) is an individual marriage & family therapist in Lompoc, California and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mairwen Chiu is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mairwen Chiu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Clara, CA 95051
- Reassigned Medicare billing, California enrollment
- 20,078 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 19
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOMPOC, CA 93436
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 Mairwen Chiu's NPI number?
The NPI number for Mairwen Chiu is 1780189787. It was assigned to this individual provider in the NPPES registry on March 29, 2018.
Where is Mairwen Chiu located?
Mairwen Chiu practices at 101 S B St, Lompoc, CA 93436. The listed phone number is (805) 735-4376.
What is Mairwen Chiu's specialty?
The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.
Is Mairwen Chiu enrolled in Medicare?
Yes. Mairwen Chiu is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mairwen Chiu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mairwen Chiu reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, 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 Mairwen Chiu'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 Mairwen Chiu was last updated on April 10, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Mairwen Chiu · NPI 1780189787
Marriage & Family Therapist provider in Lompoc, California. Individual provider, active in the CMS NPPES registry since March 29, 2018.
## Identity
- **NPI:** 1780189787 (Entity type: Individual)
- **Enumerated:** March 29, 2018
- **Primary specialty:** Marriage & Family Therapist · taxonomy 106H00000X
- **Sole proprietor:** No
## Practice location
- **Address:** 101 S B ST, Lompoc, CA 93436-6933
- **Phone:** (805) 735-4376
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Permanente Medical Group Inc (NPI 1073606299, Santa Clara, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 10, 2021
- **Other identifiers:** Other 100990943
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Source: [NPI Profile](https://npiprofile.com/npi/1780189787) · Data from the CMS NPPES public registry.