Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

OLIVIA KATHRYN MASON PA-C
NPI 1063351609
Physician Assistant - Surgical in Highland Park, IL

Active since March 27, 2026PECOS Enrolled
777 PARK AVE W, HIGHLAND PARK, IL 60035(847) 432-9000 Get Directions Write a Review

NPPES record last updated: August 11, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Aug 11, 2026, Apr 11, 2026, Mar 27, 2026 (3 updates tracked since 2026).

About Olivia Kathryn Mason Pa-c NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

OLIVIA KATHRYN MASON PA-C (NPI 1063351609) is an individual surgical provider in Highland Park, Illinois, licensed in Illinois (085012286) and active in the NPI registry since March 2026. She is enrolled in Medicare PECOS and maintains a secondary practice location in Kennett Square.

NPPES Registry Identity

NPI1063351609
Entity TypeIndividualFemale
Primary Taxonomy363AS0400X
Provider Legal NameOLIVIA KATHRYN MASONCredential: PA-C
Location Address777 PARK AVE WHighland Park, IL 60035-2433
Mailing Address2650 Ridge AveEvanston, IL 60201-1700
Sole ProprietorNo
Enumeration DateMarch 27, 2026
Last NPPES UpdateAugust 11, 20263 updates tracked since enumeration
NPPES CertifiedAugust 11, 2026
NPI 1063351609 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyPhysician Assistant · SurgicalPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363AS0400X
License Licensed in IL · 085012286
Also ListedPhysician AssistantTaxonomy 363A00000X
777 PARK AVE W, Highland Park, IL 60035

Secondary Practice Location 1

Location 1283 Cherry LnKennett Square, PA 19348-4708 · Phone (484) 844-1287

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Olivia Kathryn Mason Pa-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

Clinical Nurse Specialist
777 PARK AVE W, EP LAB, RM 1111
HIGHLAND PARK, IL 60035
Occupational Therapist (Hand)
777 PARK AVE W
HIGHLAND PARK, IL 60035
Speech-Language Pathologist
777 PARK AVE W, ROOM 2102
HIGHLAND PARK, IL 60035
Physician Assistant (Surgical)
777 PARK AVE W
HIGHLAND PARK, IL 60035
Physician Assistant
777 PARK AVE W, DEPARTMENT OF SURGERY
HIGHLAND PARK, IL 60035
Physician Assistant
777 PARK AVE W
HIGHLAND PARK, IL 60035
Physician Assistant (Surgical)
777 PARK AVE W
HIGHLAND PARK, IL 60035
Nurse Practitioner
777 PARK AVE W
HIGHLAND PARK, IL 60035

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 Olivia Mason's NPI number?

The NPI number for Olivia Mason is 1063351609. It was assigned to this individual provider in the NPPES registry on March 27, 2026.

Where is Olivia Mason located?

Olivia Mason practices at 777 Park Ave W, Highland Park, IL 60035. The listed phone number is (847) 432-9000.

What is Olivia Mason's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Surgical, with taxonomy code 363AS0400X.

Is Olivia Mason enrolled in Medicare?

Yes. Olivia Mason is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Olivia Mason was last updated on August 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.