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GREGORY J NYSTROM DC
NPI 1871572321
Chiropractor in Green Bay, WI

Active since January 12, 2006Accepts Medicare Assignment
1110 KEPLER DR, GREEN BAY, WI 54311(920) 288-5555(920) 288-5550 Get Directions Write a Review

NPPES record last updated: May 7, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 7, 2026, May 6, 2025, Nov 23, 2021 and 1 more (4 updates tracked since 2017).

About Gregory J Nystrom Dc NPPES

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

GREGORY J NYSTROM DC (NPI 1871572321) is an individual chiropractor in Green Bay, Wisconsin, licensed in Wisconsin (3062) and active in the NPI registry since January 2006. He maintains a secondary practice location in Green Bay and is a graduate of National College Of Chiropractic (1993).

NPPES Registry Identity

NPI1871572321
Entity TypeIndividualMale
Primary Taxonomy111N00000X
Provider Legal NameGREGORY J NYSTROMCredential: DC
Location Address1110 KEPLER DRGreen Bay, WI 54311-8306
Mailing Address1035 Kepler DrGreen Bay, WI 54311-8320 · (920) 490-9046 · Fax (920) 405-8005
Phone(920) 288-5555
Fax(920) 288-5550
Sole ProprietorNo
Medical School CMSNational College Of ChiropracticGraduated 1993
Enumeration DateJanuary 12, 2006
Last NPPES UpdateMay 7, 20264 updates tracked since enumeration
NPPES CertifiedMay 7, 2026
✔ NPI 1871572321 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyChiropractorChiropractic Providers
Taxonomy Code111N00000X
License✔ Licensed in WI · 3062
Definition
A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems.
1110 KEPLER DR, Green Bay, WI 54311
Open in Google Maps ↗

Secondary Practice Location 1

Location 11441 Bellevue St, Bellevue Chiropractic ClinicGreen Bay, WI 54311-5605 · Phone (920) 465-7772 · Fax (920) 468-9785

Other Identifiers 1

Medicaid3889700WI

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, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gregory J Nystrom Dc 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 ID4183517196
PECOS Enrollment IDI20040204000432

Medicare Billing Reassignments

3

Medicare enrollment records show Gregory Nystrom reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Baycare Aurora, LLC
0.4 mi
General Acute Care Hospital
2845 GREENBRIER RD
Green Bay, WI 54311
  • Reassigned Medicare billing, Wisconsin enrollment
  • 394 clinicians in this Medicare group
NPI 1255387726 (920) 288-8000
Baycare Clinic LLP
0.4 mi
Emergency Medicine
2845 GREENBRIER RD
Green Bay, WI 54311
  • Reassigned Medicare billing, Wisconsin enrollment
  • 275 clinicians in this Medicare group
NPI 1588609648 (920) 288-8000
Aurora Medical Group, Inc.
51 mi
Clinic/Center
2414 KOHLER MEMORIAL DR
Sheboygan, WI 53081
  • Reassigned Medicare billing, Wisconsin enrollment
  • 4,609 clinicians in this Medicare group
NPI 1174670244 (920) 457-4461

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.

ETHAN T SHAVER PA
Physician Assistant
1110 KEPLER DR
GREEN BAY, WI 54311
Brown County (920) 288-5555
KALIA XIONG OT
Occupational Therapist
1110 KEPLER DR
GREEN BAY, WI 54311
Brown County (920) 932-6050
DR. RYAN WOODS
Physical Medicine & Rehabilitation (Sports Medicine)
1110 KEPLER DR
GREEN BAY, WI 54311
Brown County (920) 288-5555
BAYCARE CLINIC, LLP
Orthopaedic Surgery
1110 KEPLER DR
GREEN BAY, WI 54311
Brown County (920) 288-5555
BRIAN MIKOLAJCZYK MD, PHD
Physical Medicine & Rehabilitation
1110 KEPLER DR
GREEN BAY, WI 54311
Brown County (920) 304-9695
SARAH J BURTON NP
Nurse Practitioner
1110 KEPLER DR
GREEN BAY, WI 54311
Brown County (920) 288-5555
NICOLE S HERZOG DPT
Physical Therapist
1110 KEPLER DR
GREEN BAY, WI 54311
Brown County (920) 288-4712
TAYLOR NIER PT
Physical Therapist
1110 KEPLER DR
GREEN BAY, WI 54311
Brown County (920) 932-6050

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 Gregory Nystrom's NPI number?

The NPI number for Gregory Nystrom is 1871572321. It was assigned to this individual provider in the NPPES registry on January 12, 2006.

Where is Gregory Nystrom located?

Gregory Nystrom practices at 1110 Kepler Dr, Green Bay, WI 54311. The listed phone number is (920) 288-5555.

What is Gregory Nystrom's specialty?

The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.

Is Gregory Nystrom enrolled in Medicare?

Yes. Gregory Nystrom 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 Gregory Nystrom's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Nystrom reassigns Medicare benefits to 3 organizations: Baycare Aurora, LLC (Green Bay, WI), Baycare Clinic LLP (Green Bay, WI) and Aurora Medical Group, Inc. (Sheboygan, WI). 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 Gregory Nystrom's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Nystrom accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and Network Health list Gregory Nystrom 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 Gregory Nystrom was last updated on May 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.