Doctor profile · Federal record

Dr. Alex Linn, M.D.

Vascular Neurology Physician (CMS: Neurology) · Neurology Physician · Sioux Falls, SD

  • NPI 1003177338
  • Accepts Medicare
  • 15 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

Operates at 4 locations .

NPPES Updated May 11, 2026
Primary practice
1301 S Cliff Ave Ste 610
Sioux Falls, SD 57105
(605) 322-8860
fax (605) 322-8868
Additional location
1215 E Michigan Ave
Lansing, MI 489121811
(517) 432-9277
fax (517) 432-9414
Additional location
788 Service RD Ste B-401
East Lansing, MI 488247013
(517) 432-9277
Show 1 more location
Additional location
1325 S. Cliff Ave, Dept of Neuro-Endovascular Surgery
Sioux Falls, SD 571051032
(605) 332-8000

Credentials & registration

NPPES · NUCC
NPI registered
June 2012 — 14 yrs on file
Profile last updated
May 24, 2019
Year of graduation
2011 — 15 yrs since
Specialty taxonomy
2084V0102X — NUCC code
State license (1)
Michigan #4301112294

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1003177338. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
664
Distinct HCPCS
10
Medicare allowed
$130,607
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99 49 $114
36226 Insertion of tube into brain artery for diagnosis or treatment with review by radiologist 59 52 $204
36224 Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist 53 46 $337
36227 Insertion of tube into external neck artery for diagnosis or treatment with review by radiologist 48 42 $147
76937 Ultrasonic guidance for blood vessel access 42 36 $13
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 42 41 $166
75898 Imaging of blood vessel 41 22 $82
76377 3d radiographic procedure with computerized image postprocessing 34 23 $36
G2212 Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or 34 19 $30
75894 Review by radiologist of image for insertion of material to block blood flow 31 24 $65

In context: peer comparison

Among 2 peers in Sioux Falls Vascular Neurology Physician, average services per provider: 37. This provider delivers 18× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$94
Transactions
4
Manufacturers
3
Payer (manufacturer) Industry Txns Amount
DePuy Synthes Sales INC. 2 $50.24
MicroVention, INC. 1 $22.13
Microtransponder, INC. 1 $21.37

By nature of payment

Food and Beverage
$94

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
82
Patients
0
Total drug cost
$15,698
Drug Type Claims Patients Total cost
Eliquis (Apixaban) Brand 29 0 $15,299
Atorvastatin Calcium Generic 16 0 $67
Clopidogrel (Clopidogrel Bisulfate) Brand 15 0 $120
Amitriptyline Hcl Generic 11 0 $171
Sertraline Hcl Generic 11 0 $42

Frequently asked questions

Auto-generated from federal data
What is Dr. Alex Linn's medical specialty?
Dr. Alex Linn practices Vascular Neurology Physician in Sioux Falls, SD.
Where does Dr. Alex Linn practice?
Dr. Alex Linn practices at 1301 S Cliff Ave Ste 610, Sioux Falls, SD 57105. Office phone: 6053228860.
What is Dr. Alex Linn's NPI?
Dr. Alex Linn's National Provider Identifier (NPI) is 1003177338, issued by NPPES.
Does Dr. Alex Linn accept Medicare assignment?
Yes. Dr. Alex Linn accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Alex Linn commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Insertion of tube into brain artery for diagnosis or treatment with review by radiologist (HCPCS 36226); Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist (HCPCS 36224). Source: CMS Medicare Physician & Other Practitioners file.