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SAGE ALSTON
NPI 1366926362
Counselor - Professional in Oshkosh, WI

Active since September 17, 2018PECOS Enrolled
220 WASHINGTON AVE, OSHKOSH, WI 54901(920) 236-4700 Get Directions Write a Review

NPPES record last updated: November 19, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 19, 2025, Oct 3, 2024, Oct 24, 2023 and 1 more (4 updates tracked since 2018).

About Sage Alston NPPES

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

SAGE ALSTON (NPI 1366926362) is an individual professional provider in Oshkosh, Wisconsin, licensed in Wisconsin (7825) and active in the NPI registry since September 2018. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1366926362
Entity TypeIndividualFemale
Primary Taxonomy101YP2500X
Provider Legal NameSAGE ALSTON
Location Address220 WASHINGTON AVEOshkosh, WI 54901-5030
Mailing Address220 Washington AveOshkosh, WI 54901-5030 · (920) 236-4700
Phone(920) 236-4700
Sole ProprietorNo
Enumeration DateSeptember 17, 2018
Last NPPES UpdateNovember 19, 20254 updates tracked since enumeration
NPPES CertifiedNovember 19, 2025
✔ NPI 1366926362 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyCounselor · ProfessionalBehavioral Health & Social Service Providers
Taxonomy Code101YP2500X
License✔ Licensed in WI · 7825
Also ListedCounselor · Addiction (Substance Use Disorder)Taxonomy 101YA0400X · License 18471 (WI)
220 WASHINGTON AVE, Oshkosh, WI 54901
Open in Google Maps ↗

Other Names 1

Former Name (1)Sage S Stiebs-mathewson

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sage Alston 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.

Medicare Billing Reassignment

Medicare enrollment records show Sage Alston reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of Winnebago
Same address
Mental Health (Including Community Mental Health Center)
220 WASHINGTON AVE
Oshkosh, WI 54901
  • Reassigned Medicare billing, Wisconsin enrollment
  • 20 clinicians in this Medicare group
NPI 1508960675 (920) 236-4700

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

SANDRA MAGNUSON
Social Worker (Clinical)
220 WASHINGTON AVE
OSHKOSH, WI 54901
Winnebago County (920) 236-4600
STACEY CARLSON CNA
Nurse's Aide
220 WASHINGTON AVE
OSHKOSH, WI 54901
Winnebago County (920) 236-4700
RACHEL A KELBERT A.P.S.W.
Case Manager/Care Coordinator
220 WASHINGTON AVE
OSHKOSH, WI 54901
Winnebago County (920) 236-4700
SAMANTHA N BECKER
Social Worker (Clinical)
220 WASHINGTON AVE
OSHKOSH, WI 54901
Winnebago County (920) 236-4700
SHARON SCHNECKENBERG B.S.
Case Manager/Care Coordinator
220 WASHINGTON AVE
OSHKOSH, WI 54901
Winnebago County (920) 236-4700
LAURA A CRAIG RN
Registered Nurse (Psychiatric/Mental Health)
220 WASHINGTON AVE
OSHKOSH, WI 54901
Winnebago County (920) 236-4700
THERESA A BOUDREAU-VNUK B.X.
Social Worker (Clinical)
220 WASHINGTON AVE
OSHKOSH, WI 54901
Winnebago County (920) 236-4700
MARISSA B LEE
Social Worker (Clinical)
220 WASHINGTON AVE
OSHKOSH, WI 54901
Winnebago County (920) 236-4700

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 Sage Alston's NPI number?

The NPI number for Sage Alston is 1366926362. It was assigned to this individual provider in the NPPES registry on September 17, 2018. The provider is also known as Sage S Stiebs-Mathewson.

Where is Sage Alston located?

Sage Alston practices at 220 Washington Ave, Oshkosh, WI 54901. The listed phone number is (920) 236-4700.

What is Sage Alston's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.

Is Sage Alston enrolled in Medicare?

Yes. Sage Alston is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Sage Alston's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sage Alston reassigns Medicare benefits to County Of Winnebago (Oshkosh, WI). The 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 Sage Alston's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sage Alston accept?

Health plans from Anthem Blue Cross and Blue Shield, CareSource (Common Ground Healthcare), HealthPartners, Network Health and Security Health Plan and 1 other insurer list Sage Alston 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 Sage Alston was last updated on November 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.