MALLORY ELISE WILLETT
NPI 1881108462
Nurse Practitioner - Family in Pittsburgh, PA
About Mallory Elise Willett NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MALLORY ELISE WILLETT (NPI 1881108462) is an individual family provider in Pittsburgh, Pennsylvania, licensed in Pennsylvania (SP018132) and active in the NPI registry since November 2017. She is enrolled in Medicare PECOS.
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 (PECOS)
Mallory Elise Willett is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Mallory Willett reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Aliquippa, PA 15001
- Reassigned Medicare billing, Pennsylvania enrollment
- 7 clinicians in this Medicare group
Uniontown, PA 15401
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: Ars Treatment Centers PC
- 140 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 15237 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 16
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 Mallory Willett's NPI number?
The NPI number for Mallory Willett is 1881108462. It was assigned to this individual provider in the NPPES registry on November 19, 2017.
Where is Mallory Willett located?
Mallory Willett practices at 611 Duncan Ave, Pittsburgh, PA 15237. The listed phone number is (412) 358-8690.
What is Mallory Willett's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Mallory Willett enrolled in Medicare?
Yes. Mallory Willett is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mallory Willett's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mallory Willett reassigns Medicare benefits to 2 organizations: Opioid Addiction Recovery Services (Aliquippa, PA) and Ars Treatment Centers, P.C. (Uniontown, 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 Mallory Willett's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mallory Willett accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Mallory Willett 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 Mallory Willett was last updated on April 20, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.