ALEXANDER F AU M.D.
NPI 1386821700
Plastic Surgery in Trumbull, CT
About Alexander F Au M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALEXANDER F AU M.D. (NPI 1386821700) is an individual plastic surgery provider in Trumbull, Connecticut, licensed in New Jersey (25MA09904900) and active in the NPI registry since January 2008. He is enrolled in Medicare PECOS, is affiliated with West Jersey Hospital, and is a graduate of University Of Rochester School Of Medicine And Dentistry (2004).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Alexander F Au M.d. 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
3Medicare enrollment records show Alexander Au reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Trumbull, CT 06611
- Reassigned Medicare billing, Connecticut enrollment
- 4 clinicians in this Medicare group
Mount Holly, NJ 08060
- Reassigned Medicare billing, New Jersey enrollment
- 2,074 clinicians in this Medicare group
Doylestown, PA 18901
- Reassigned Medicare billing, Pennsylvania enrollment
- 3,488 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
West Jersey Hospital
Acute Care Hospitals · Voorhees, NJVirtua Mount Holly Hospital
Acute Care Hospitals · Mount Holly, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06611 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Alexander Au's NPI number?
The NPI number for Alexander Au is 1386821700. It was assigned to this individual provider in the NPPES registry on January 28, 2008.
Where is Alexander Au located?
Alexander Au practices at 5520 Park Ave Ste Wp-2300, Trumbull, CT 06611. The listed phone number is (203) 200-0828.
What is Alexander Au's specialty?
The primary specialty registered for this NPI is Plastic Surgery with taxonomy code 208200000X.
Is Alexander Au enrolled in Medicare?
Yes. Alexander 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.
Which organizations bill Medicare for Alexander Au's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Au reassigns Medicare benefits to 3 organizations: The Diep Group Ct PLLC (Trumbull, CT), Virtua Medical Group, PA (Mount Holly, NJ) and University Of Penn - Medical Group (Doylestown, PA). 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 Alexander Au's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alexander Au accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Alexander 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.
Is Alexander Au affiliated with any hospitals?
According to CMS data, Alexander Au is affiliated with West Jersey Hospital and Virtua Mount Holly Hospital.
When was this NPI record last updated?
The NPPES record for Alexander Au was last updated on September 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 days 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.
# Alexander F Au, M.D. · NPI 1386821700
Plastic Surgery physician in Trumbull, Connecticut. Individual provider, active in the CMS NPPES registry since January 28, 2008.
## Identity
- **NPI:** 1386821700 (Entity type: Individual)
- **Enumerated:** January 28, 2008
- **Primary specialty:** Plastic Surgery · taxonomy 208200000X
- **State license:** 25MA09904900 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 5520 PARK AVE STE WP-2300, Trumbull, CT 06611-3463
- **Phone:** (203) 200-0828
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): The Diep Group Ct PLLC (NPI 1164143566, Trumbull, CT); Virtua Medical Group, PA (NPI 1851841696, Mount Holly, NJ); University Of Penn - Medical Group (NPI 1538056163, Doylestown, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Rochester School Of Medicine And Dentistry, class of 2004
## Record status
- **NPPES last updated:** September 22, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1386821700) · Data from the CMS NPPES public registry.