1. Home
  2. Directory
  3. Wisconsin
  4. Onalaska
  5. Chiropractor
  6. NPI Profile

DR. MARK A CASSELLIUS D.C.
NPI 1669433462
Chiropractor in Onalaska, WI

Active since March 31, 2006
419 SAND LAKE RD, ONALASKA, WI 54650(608) 783-3307(608) 779-9728 Get Directions Write a Review

NPPES record last updated: April 26, 2011. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Mark A Cassellius D.c. NPPES

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

DR. MARK A CASSELLIUS D.C. (NPI 1669433462) is an individual chiropractor in Onalaska, Wisconsin, licensed in Wisconsin (2293) and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1669433462
Entity TypeIndividualMale
Primary Taxonomy111N00000X
Provider Legal NameDR. MARK A CASSELLIUSCredential: D.C.
Location Address419 SAND LAKE RDOnalaska, WI 54650-2706
Mailing Address419 Sand Lake RdOnalaska, WI 54650-2706 · (608) 783-3307 · Fax (608) 779-9728
Phone(608) 783-3307
Fax(608) 779-9728
Sole ProprietorYes
Enumeration DateMarch 31, 2006
Last NPPES UpdateApril 26, 2011
✔ NPI 1669433462 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyChiropractorChiropractic Providers
Taxonomy Code111N00000X
License✔ Licensed in WI · 2293
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.
419 SAND LAKE RD, Onalaska, WI 54650
Open in Google Maps ↗

Other Identifiers 3

Other350016946WI · Rr Medicare #
Medicaid38800700WI
Medicare UPINT61645WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include HealthPartners, Medica, Quartz.Insurance ›

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CAROLYN SERAUKAS
Massage Therapist
419 SAND LAKE RD
ONALASKA, WI 54650
La Crosse County (608) 783-3307
ACTIVE CHIROPRACTIC CLINIC LLC
Chiropractor
419 SAND LAKE RD
ONALASKA, WI 54650
La Crosse County (608) 783-3307
BRENNAN J QUINN LAC
Acupuncturist
419 SAND LAKE RD
ONALASKA, WI 54650
La Crosse County (608) 313-4327

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 Mark Cassellius's NPI number?

The NPI number for Mark Cassellius is 1669433462. It was assigned to this individual provider in the NPPES registry on March 31, 2006.

Where is Mark Cassellius located?

Mark Cassellius practices at 419 Sand Lake Rd, Onalaska, WI 54650. The listed phone number is (608) 783-3307.

What is Mark Cassellius's specialty?

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

What insurance does Mark Cassellius accept?

Health plans from HealthPartners, Medica and Quartz list Mark Cassellius 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 Mark Cassellius was last updated on April 26, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years 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.