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JOHNSON, DANAM.D. NPI 1235556671 Clinician

Cardiology · MAYWOOD, IL

Specialty Cardiology — from billed Medicare claims
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Active in data Billed Medicare 2022–2024 (3 consecutive years)
Scale 11 codes billed · 601 disclosed volume (CY2024 — most recent year in data)
Current groups
Hospital affiliations
  • UNIVERSITY OF ILLINOIS HOSPITAL AND CLINICS · Hospital · CCN 140150
registry affiliations from the CMS Doctors & Clinicians facility file — an administrative affiliation, not a statement about where care is delivered

Group affiliation since 2019

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Membership spans across every group on this clinician's 2019+ registry record, departed groups included. 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 2020-06
Data year CY2024 CY2023 CY2022 

Provider overview · all codes · CY2024

The full analytics for this provider

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The full billed-volume analytics for this provider — its position among specialty peers, practice focus, and the payments behind it — computed from the same disclosed Medicare Part B data.

This provider's disclosed submitted charges across all codes were in CY2024. Included with Platform.

  • Charge, 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
  • 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 Volume Beneficiary-episodes Avg charge Avg Medicare payment
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
93248 Heart rhythm review and interpretation of continous external ekg over 8-15 days
93294 Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days
93284 Programming of multiple lead implantable defibrillator system
93295 Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days
93655 Insertion of catheters and destruction of tissue to treat abnormal heart rhythm
93228 Electrocardiogram (ecg) up to 30 days continuous with review and report by health care professional
93272 Electrocardiogram (ecg) up to 30 days continuous with symptom monitoring, transmission and review and report by health care professional
93656 Comprehensive electrophysiologic evaluation with catheter destruction of abnormality causing atrial fibrillation (uncoordinated contraction of upper chambers of heart) by pulmonary vein isolation

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.