Doctor profile · Federal record
Dr. Michael Sack, D.C.
Chiropractor · Spearfish, SD
- NPI 1639100076
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
144 N Main St
Spearfish, SD 577832754
(605) 644-1111
fax (605) 644-1234
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- August 25, 2014
- Specialty taxonomy
- 111N00000X — NUCC code
- State license (1)
- South Dakota #588
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1639100076. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
273
Distinct HCPCS
1
Medicare allowed
$10,706
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
98941 |
Chiropractic manipulative treatment, 3-4 spinal regions | 273 | 30 | $39 |
In context: peer comparison
Among 6 peers in Spearfish Chiropractor, average services per provider: 329. This provider delivers 0.8× the peer median.Frequently asked questions
What is Dr. Michael Sack's medical specialty?
Dr. Michael Sack practices Chiropractor in Spearfish, SD.
Where does Dr. Michael Sack practice?
Dr. Michael Sack practices at 144 N Main St, Spearfish, SD 577832754. Office phone: 6056441111.
What is Dr. Michael Sack's NPI?
Dr. Michael Sack's National Provider Identifier (NPI) is 1639100076, issued by NPPES.
What procedures does Dr. Michael Sack commonly perform?
Top Medicare-reported procedures in 2023: Chiropractic manipulative treatment, 3-4 spinal regions (HCPCS 98941). Source: CMS Medicare Physician & Other Practitioners file.