MONA M LIU MD
NPI 1043755754
Allergy & Immunology in San Jose, CA
About Mona M Liu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MONA M LIU MD (NPI 1043755754) is an individual allergy & immunology provider in San Jose, California, licensed in California (A146471) and active in the NPI registry since January 2017. She is enrolled in Medicare PECOS and is a graduate of University Of Pittsburgh School Of Medicine (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
Mona M Liu 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
2Medicare enrollment records show Mona Liu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Palo Alto, CA 94301
- Reassigned Medicare billing, California enrollment
- 4,479 clinicians in this Medicare group
Las Vegas, NV 89106
- Reassigned Medicare billing, Nevada enrollment
- 195 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 6
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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 JOSE, CA 95119
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 Mona Liu's NPI number?
The NPI number for Mona Liu is 1043755754. It was assigned to this individual provider in the NPPES registry on January 4, 2017.
Where is Mona Liu located?
Mona Liu practices at 270 International Cir, San Jose, CA 95119. The listed phone number is (408) 890-0629.
What is Mona Liu's specialty?
The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.
Is Mona Liu enrolled in Medicare?
Yes. Mona Liu 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 Mona Liu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mona Liu reassigns Medicare benefits to 2 organizations: Sutter Bay Medical Foundation (Palo Alto, CA) and Optum Medical Group Rhodes P C (Las Vegas, NV). 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 Mona Liu'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 Mona Liu was last updated on December 20, 2021. 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.
# Mona M Liu, MD · NPI 1043755754
Allergy & Immunology physician in San Jose, California. Individual provider, active in the CMS NPPES registry since January 4, 2017.
## Identity
- **NPI:** 1043755754 (Entity type: Individual)
- **Enumerated:** January 4, 2017
- **Primary specialty:** Allergy & Immunology · taxonomy 207K00000X
- **State license:** A146471 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 270 INTERNATIONAL CIR, San Jose, CA 95119-1130
- **Phone:** (408) 890-0629
## 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): Sutter Bay Medical Foundation (NPI 1013950807, Palo Alto, CA); Optum Medical Group Rhodes P C (NPI 1225609464, Las Vegas, NV) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Pittsburgh School Of Medicine, class of 2015
## Record status
- **NPPES last updated:** December 20, 2021
---
Source: [NPI Profile](https://npiprofile.com/npi/1043755754) · Data from the CMS NPPES public registry.