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LYON, JAMESMD NPI 1689647331 Clinician

Diagnostic Radiology · SAN DIEGO, CA

Specialty Diagnostic Radiology — from billed Medicare claims
Trained INDIANA UNIVERSITY SCHOOL OF MEDICINE — medical school, self-reported to CMS
In practice about 47 years since medical school (class of 1979, self-reported to CMS)
Location SAN DIEGO, CA · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 15 codes billed · 507 disclosed services (CY2024 — most recent year in data)
Current groups
member of 2 groups; the volumes below are this clinician's personal volume and are not attributed to any single group

Group affiliation since 2019

20192026
SAN DIEGO IMAGING-CHULA VISTA LLC
2025–2026
SAN DIEGO DIAGNOSTIC RADIOLOGY MEDICAL GROUP INC
2019–2026

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 2007-10

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. Unlock to see the figure.

  • 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
99152 Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes
77012 Review by radiologist of ct guidance for needle placement
32555 Aspiration of fluid from chest cavity using imaging guidance
49083 Drainage of fluid from abdominal cavity using imaging guidance
77001 Fluoroscopic guidance for insertion or removal of central vein access device
49424 Injection of contrast through abdominal cavity tube for x-ray study
76080 Review by radiologist of abscess or sinus cavity study
32408 Core needle biopsy of lung or center cavity of chest (mediastinum), accessed through skin
50200 Needle biopsy of kidney
36561 Insertion of central venous tube with port (5 years or older)
71045 X-ray of chest, 1 view
76937 Ultrasonic guidance for blood vessel access
47000 Needle biopsy of liver through skin
77013 Ct guidance for tissue removal
49440 Insertion of stomach tube using fluoroscopic guidance with contrast

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.