MATTHEW LI-AN AU MD
NPI 1013654664
Internal Medicine in Mesa, AZ
About Matthew Li-an Au Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MATTHEW LI-AN AU MD (NPI 1013654664) is an individual internal medicine provider in Mesa, Arizona, licensed in Arizona (74247) and active in the NPI registry since May 2022. He is enrolled in Medicare PECOS and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Matthew Li-an Au 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 85209 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 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MESA, AZ 85209
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 Matthew Au's NPI number?
The NPI number for Matthew Au is 1013654664. It was assigned to this individual provider in the NPPES registry on May 16, 2022.
Where is Matthew Au located?
Matthew Au practices at 1917 S Crismon Rd, Mesa, AZ 85209. The listed phone number is (480) 610-7100.
What is Matthew Au's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Matthew Au enrolled in Medicare?
Yes. Matthew Au 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.
What insurance does Matthew Au accept?
Health plans from Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona and UnitedHealthcare list Matthew Au as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Matthew Au was last updated on September 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Matthew Li-An Au, MD · NPI 1013654664
Internal Medicine physician in Mesa, Arizona. Individual provider, active in the CMS NPPES registry since May 16, 2022.
## Identity
- **NPI:** 1013654664 (Entity type: Individual)
- **Enumerated:** May 16, 2022
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 74247 (Arizona)
- **Sole proprietor:** No
## Practice location
- **Address:** 1917 S CRISMON RD, Mesa, AZ 85209-6216
- **Phone:** (480) 610-7100
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** September 25, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1013654664) · Data from the CMS NPPES public registry.