NEVVI Medicare utilization intelligence

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LINN, ALEXM.D. NPI 1003177338 Clinician

Neurology · SIOUX FALLS, SD

Specialty Neurology — from billed Medicare claims
In practice about 15 years since medical school (class of 2011, self-reported to CMS)
Location SIOUX FALLS, SD · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 17 codes billed · 565 disclosed services (CY2024 — most recent year in data)
Current groups

Group affiliation since 2019

20202026
AVERA MCKENNAN
2020–2026

The roster archive begins in 2019, so a span starting at 2019 may reach back further. Membership spans only — no volume is attributed to any group here.

NPPES registry · CMS Doctors & Clinicians registry · Medicare Part B physician/supplier claims · NPPES record last updated 2026-05

Year: 2024 · 2023 · 2022  · 2021  · 2020 

Provider overview · all codes · CY2024

The full analytics for this provider

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The billed-volume positioning, practice focus, and economics behind this provider — computed on the same disclosed Medicare Part B data.

This provider's disclosed Medicare payments across all codes were in CY2024. Included with Platform.

  • Payment, service & beneficiary totals — the disclosed scale, all codes
  • Practice profile — focus & reach — top codes by share of services
  • Office vs. facility setting mix — place-of-service code split
  • Volume over five years — discrete yearly counts, no rate
  • Peer positioning — service volume — percentile among specialty peers, cohort & year disclosed
  • Peer positioning — code breadth — how many codes billed, vs peers

Peer positioning shows billed-volume and code-breadth positions among specialty peers, not measures of care (a provider's true volume position can only be higher, never lower). All figures disclosed Medicare Part B fee-for-service; volumes are personal to this NPI, not attributed to any group.

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Procedures billed to Medicare Part B (2024)

Medicare Part B FFS · CY2024 · as published by CMS
CodeDescription Services Beneficiary-episodes Avg charge Avg Medicare payment
36224 Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist
36226 Insertion of tube into brain artery for diagnosis or treatment with review by radiologist
76937 Ultrasonic guidance for blood vessel access
36227 Insertion of tube into external neck artery for diagnosis or treatment with review by radiologist
75894 Review by radiologist of image for insertion of material to block blood flow
75898 Imaging of blood vessel
61624 Occlusion of central nervous system or spinal cord artery
76377 3d radiographic procedure with computerized image postprocessing
37215 Insertion of stent and blood clot protection device in neck artery with review by radiologist
36225 Insertion of tube into chest artery for diagnosis or treatment with review by radiologist
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
61645 Removal of blood clot and injection to dissolve blood clot from head artery using fluoroscopic guidance
99291 Critical care, first 30-74 minutes
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
99152 Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes
36223 Insertion of tube into intracranial artery for diagnosis or treatment with review by radiologist
99239 Hospital discharge day management, more than 30 minutes

These are this provider's own Medicare Part B fee-for-service volumes (CMS public data). CMS suppresses rows with fewer than 11 beneficiaries, so low-volume codes may be missing entirely — absence is not zero. Beneficiary-episodes count CMS's per-setting beneficiary figures, not unique patients. Average charge and average Medicare payment are weighted by service volume across office and facility settings. Volumes on this page are personal to the NPI and are not attributed to any physician group. See Methods & Sources.