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MR. MATTHEW S. BAY P.A.
NPI 1033359401
Physician Assistant - Surgical in Appleton, WI

Active since February 25, 2009PECOS EnrolledAccepts Medicare Assignment
2000 E MILESTONE DR, APPLETON, WI 54913(920) 731-8131(920) 832-0444 Get Directions Write a Review

NPPES record last updated: January 5, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mr. Matthew S. Bay P.a. NPPES

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

MR. MATTHEW S. BAY P.A. (NPI 1033359401) is an individual surgical provider in Appleton, Wisconsin, licensed in Wisconsin (2387-23) and active in the NPI registry since February 2009. He is enrolled in Medicare PECOS, is affiliated with Thedacare Regional Medical Center - Appleton Inc, and is a graduate of University Of Nebraska College Of Medicine (2009).

NPPES Registry Identity

NPI1033359401
Entity TypeIndividualMale
Primary Taxonomy363AS0400X
Provider Legal NameMR. MATTHEW S. BAYCredential: P.A.
Location Address2000 E MILESTONE DRAppleton, WI 54913-6701
Mailing Address2000 E Milestone Dr, Fox Valley Surgical AssociatesAppleton, WI 54913-6701 · (920) 731-8131 · Fax (920) 832-0444
Phone(920) 731-8131
Fax(920) 832-0444
Sole ProprietorNo
Medical School CMSUniversity Of Nebraska College Of MedicineGraduated 2009
Enumeration DateFebruary 25, 2009
Last NPPES UpdateJanuary 5, 2026
NPPES CertifiedJanuary 5, 2026
✔ NPI 1033359401 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician Assistant · SurgicalPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363AS0400X
License✔ Licensed in WI · 2387-23
2000 E MILESTONE DR, Appleton, WI 54913
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare) and more.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

Mr. Matthew S. Bay P.a. 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.

PECOS PAC ID9739237108
PECOS Enrollment IDI20090423000655
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.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Thedacare Regional Medical Center - Appleton Inc

Acute Care Hospitals · Appleton, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520160
Location1818 N Meade StAppleton, WI 54911 · Outagamie County
Emergency services Birthing friendly

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.

ALEXIS D WELHOUSE CST
Specialist/Technologist, Other (Surgical Technologist)
2000 E MILESTONE DR
APPLETON, WI 54913
Outagamie County (920) 731-8131
KAYLA NICOLE BODART NP
Nurse Practitioner
2000 E MILESTONE DR
APPLETON, WI 54913
Outagamie County (920) 731-8131
MORGAN BRE JOSSIE
Physician Assistant
2000 E MILESTONE DR
APPLETON, WI 54913
Outagamie County (920) 731-8131
CHARLES C CHENG MD
Surgery
2000 E MILESTONE DR
APPLETON, WI 54913
Outagamie County (920) 731-8289
ARIEL L STILP APNP
Nurse Practitioner
2000 E MILESTONE DR
APPLETON, WI 54913
Outagamie County (920) 731-8131
CHRISTINE ARENDT NP
Nurse Practitioner
2000 E MILESTONE DR
APPLETON, WI 54913
Outagamie County (920) 731-8131
FOX VALLEY SURGICAL ASSOCIATES LTD
Surgery
2000 E MILESTONE DR
APPLETON, WI 54913
Outagamie County (920) 731-8131
JODI L BEGGS
Nurse Practitioner (Adult Health)
2000 E MILESTONE DR
APPLETON, WI 54913
Outagamie County (920) 731-8131

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 Bay's NPI number?

The NPI number for Matthew Bay is 1033359401. It was assigned to this individual provider in the NPPES registry on February 25, 2009.

Where is Matthew Bay located?

Matthew Bay practices at 2000 E Milestone Dr, Appleton, WI 54913. The listed phone number is (920) 731-8131.

What is Matthew Bay's specialty?

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

Is Matthew Bay enrolled in Medicare?

Yes. Matthew Bay 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 Bay accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and Network Health and 2 other insurers list Matthew Bay 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 Matthew Bay affiliated with any hospitals?

According to CMS data, Matthew Bay is affiliated with Thedacare Regional Medical Center - Appleton Inc.

When was this NPI record last updated?

The NPPES record for Matthew Bay was last updated on January 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.