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ONUFER, JOHNMD NPI 1023084100 Clinician

Clinical Cardiac Electrophysiology · RICHMOND, VA

Specialty Clinical Cardiac Electrophysiology — from billed Medicare claims
Trained WASHINGTON UNIVERSITY SCHOOL OF MEDICINE — medical school, self-reported to CMS
In practice about 42 years since medical school (class of 1984, self-reported to CMS)
Location RICHMOND, VA · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 45 codes billed · 11,402 disclosed services (CY2024 — most recent year in data)
Current groups

Group affiliation since 2019

20192026
VIRGINIA CARDIOVASCULAR SPECIALISTS
2020–2026
NORTHWEST COMMUNITY HEALTH SERVICES INC
2019

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 2025-04

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
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
99454 Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days
99457 Management using the results of remote vital sign monitoring per calendar month, first 20 minutes
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
93296 Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
93294 Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days
93295 Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days
99439 Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month
93298 Evaluation of cardiac rhythm monitor system, remote up to 30 days
99458 Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
93657 Destruction of tissue of upper heart chamber through tube to treat abnormal heart rhythm
93280 Programming of dual lead pacemaker system
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function
93656 Comprehensive electrophysiologic evaluation with catheter destruction of abnormality causing atrial fibrillation (uncoordinated contraction of upper chambers of heart) by pulmonary vein isolation
93655 Insertion of catheters and destruction of tissue to treat abnormal heart rhythm
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
93325 Ultrasound of heart with color-depicted blood flow, rate and valve function
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
93356 Heart muscle strain imaging
93312 Ultrasound of heart with probe in esophagus, with report
93320 Ultrasound of heart blood flow, valves and chambers
93284 Programming of multiple lead implantable defibrillator system
99152 Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
99453 Remote monitoring of physiologic parameters, initial set-up and patient education on use of equipment
33340 Repair of left upper heart chamber with implant with review by radiologist
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
93662 Ultrasound evaluation of heart blood vessel with review by radiologist
33208 Insertion of pacemaker and upper and lower heart chamber electrode
93248 Heart rhythm review and interpretation of continous external ekg over 8-15 days
93283 Programming of dual lead implantable defibrillator system
93282 Programming of single lead implantable defibrillator system
93281 Programming of multiple lead pacemaker system
99238 Hospital discharge day management, 30 minutes or less
93623 Programming of heart rhythm stimulation after drug infusion
93224 Electrocardiogram (ecg) 2-day continuous with review and report by health care professional
93244 Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days
93308 Ultrasound of heart, follow-up
93321 Ultrasound of heart blood flow, valves and chambers, follow-up
33228 Removal and replacement of dual lead permanent pacemaker

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.