Sack Chiropractic PC

Sack Chiropractic PC is a healthcare organization registered as Chiropractor in Spearfish, SD, holding Type 2 (organization) NPI 1538340518 since 2007. The authorized official on file is Michael Sack, President.

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NPI	1538340518
Entity type	Organization (Type 2)
Legal business name	Sack Chiropractic PC
Practice address	144 N MAIN ST, Spearfish, SD, 57783
Phone	6056441111
Fax	6056441234
Enumeration date	2007-11-19
Last updated in NPPES	2014-09-17

Authorized official

Name	Michael Sack
Title	President
Phone	6056441111

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
111N00000X	Chiropractor	Primary	588	SD

Other identifiers

Identifier	Type	State	Issuer
S7826	Other	SD	MEDICARE PROVIDER NUMBER

Copy-ready billing details

Provider: Sack Chiropractic PC
NPI: 1538340518
Taxonomy: 111N00000X (Chiropractor)
Address: 144 N MAIN ST, Spearfish, SD, 57783

Providers at this address

NPI	Name	Type	Specialty	Location
1639100076	Michael Sack	Individual	Chiropractor	Spearfish, SD
1386091338	Acupuncture of the Black Hills, LLC	Organization	Acupuncturist	Spearfish, SD
1104273150	Dylan Brandenburg	Individual	Acupuncturist	Spearfish, SD

Verify this record

Cross-check NPI 1538340518 against the authoritative CMS record: view Sack Chiropractic PC on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

Where is Sack Chiropractic PC located?

The practice location on file with NPPES is in Spearfish, SD.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2014-09-17. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2014-09-17.