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

DR. GREGG ERIC NIELSEN D.C.
NPI 1689623423
Chiropractor in Waterford, WI

Q: What is Gregg Nielsen's NPI number?

The NPI number for Gregg Nielsen is 1689623423. It was assigned to this individual provider in the NPPES registry on May 9, 2006.

Q: What is Gregg Nielsen's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Gregg Nielsen was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 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.

Active since May 09, 2006

505 ABER DR, WATERFORD, WI 53185(262) 534-3767(262) 534-2363 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Gregg Eric Nielsen D.c. NPPES

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

DR. GREGG ERIC NIELSEN D.C. (NPI 1689623423) is an individual chiropractor in Waterford, Wisconsin, licensed in Wisconsin (1969) and active in the NPI registry since May 2006. He is a graduate of Cleveland Chiropractic College - Kansas City (1984).

NPPES Registry Identity

NPI1689623423

Entity TypeIndividualMale

Primary Taxonomy111N00000X

Provider Legal NameDR. GREGG ERIC NIELSENCredential: D.C.

Location Address505 ABER DRWaterford, WI 53185-4401

Mailing Address505 Aber Dr, P.o. Box 86Waterford, WI 53185-4401 · (262) 534-3767 · Fax (262) 534-2363

Phone(262) 534-3767

Fax(262) 534-2363

Sole ProprietorNo

Medical School CMSCleveland Chiropractic College - Kansas CityGraduated 1984

Enumeration DateMay 9, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1689623423 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyChiropractorChiropractic Providers

Taxonomy Code111N00000X

License✔ Licensed in WI · 1969

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.

505 ABER DR, Waterford, WI 53185

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Gregg Eric Nielsen D.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2466576202

PECOS Enrollment IDI20100831000103

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Chiropractic manipulative treatment, 1-2 spinal regions 98940

Chiropractic manipulative treatment focuses on adjusting your spine to improve your body's physical function. In this service, a chiropractor applies controlled force to 1-2 spinal regions. This helps to restore mobility and alleviate discomfort in those areas.

122 services18 patients

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 Gregg Nielsen's NPI number?

The NPI number for Gregg Nielsen is 1689623423. It was assigned to this individual provider in the NPPES registry on May 9, 2006.

Where is Gregg Nielsen located?

Gregg Nielsen practices at 505 Aber Dr, Waterford, WI 53185. The listed phone number is (262) 534-3767.

What is Gregg Nielsen's specialty?

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

Is Gregg Nielsen enrolled in Medicare?

Yes. Gregg Nielsen is registered in the Medicare PECOS enrollment system.

What insurance does Gregg Nielsen accept?

Health plans from Anthem Blue Cross and Blue Shield list Gregg Nielsen 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 Gregg Nielsen was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 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.