Individual Healthcare Provider
Alex James Linn, M.D.
Provider's NPPES record last updated: May 6, 2026
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1003177338
- Primary Specialty
- Psychiatry & Neurology — Vascular Neurology
- Practice Location
- Sioux Falls, South Dakota
- Sole Proprietor
- Yes
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 17, 2026, 9:59 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Psychiatry & Neurology
Vascular Neurology
Allopathic & Osteopathic Physicians
Vascular Neurology is a subspecialty in the evaluation, prevention, treatment and recovery from vascular diseases of the nervous system. This subspecialty includes the diagnosis and treatment of vascular events of arterial or venous origin from a large number of causes that affect the brain or spinal cord such as ischemic stroke, intracranial hemorrhage, spinal cord ischemia and spinal cord hemorrhage.
Taxonomy code 2084V0102X Psychiatry & Neurology
Neurology
Allopathic & Osteopathic Physicians
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
Taxonomy code 2084N0400X
Provider-Reported License Information
- Psychiatry & Neurology (South Dakota)
- 11423
- Psychiatry & Neurology (South Dakota)
- 11423
Practice Locations
Practice Location
1301 S Cliff Ave Ste 610
Sioux Falls, South Dakota 57105
Phone: (605) 322-8860
Additional Practice Location
1215 E Michigan Ave
Lansing, Michigan 48912-1811
Phone: (517) 432-9277
Fax: (517) 432-9414
Additional Practice Location
788 Service Rd Ste B-401
East Lansing, Michigan 48824-7013
Phone: (517) 432-9277
Additional Practice Location
1325 S. Cliff Ave
Dept of Neuro-Endovascular Surgery
Sioux Falls, South Dakota 57105-1032
Phone: (605) 332-8000
Record Information
- Enumeration Date
- June 4, 2012
- Provider's NPPES Record Last Updated
- May 6, 2026
- Certification Date
- May 6, 2026
- NPISignal NPPES Dataset
- August 2026
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