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MARCUS, RALPH NPI 1346566056 Clinician

Diagnostic Radiology · IRVINE, CA

Specialty Diagnostic Radiology — from billed Medicare claims
Trained UNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE — medical school, self-reported to CMS
In practice about 17 years since medical school (class of 2009, self-reported to CMS)
Location IRVINE, CA · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 51 codes billed · 2,923 disclosed services (CY2024 — most recent year in data)
Current groups

Group affiliation since 2019

20192026
ST JUDE RADIOLOGY MEDICAL GROUP INC
2019–2026
NORTH OC IMAGING JV, LLC
2023

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 2025-06

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
71045 X-ray of chest, 1 view
70450 Ct scan head or brain without contrast
74176 Ct scan of abdomen and pelvis without contrast
99152 Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes
74018 X-ray of abdomen, 1 view
71250 Ct scan of chest without contrast
74177 Ct scan of abdomen and pelvis with contrast
71275 Ct scan of blood vessels of chest with contrast
76937 Ultrasonic guidance for blood vessel access
49083 Drainage of fluid from abdominal cavity using imaging guidance
73502 X-ray of hip, 2-3 views
70551 Mri scan of brain without contrast
73030 X-ray of shoulder, minimum of 2 views
72125 Ct scan of upper spine without contrast
73564 X-ray of knee, 4 or more views
77001 Fluoroscopic guidance for insertion or removal of central vein access device
71046 X-ray of chest, 2 views
76775 Limited ultrasound scan behind abdominal cavity
70498 Ct scan of blood vessels of neck with contrast
77012 Review by radiologist of ct guidance for needle placement
76376 3d radiographic procedure
70496 Ct scan of blood vessels of head with contrast
32555 Aspiration of fluid from chest cavity using imaging guidance
38222 Biopsy and aspiration of bone marrow sample for diagnosis
74230 Imaging for evaluation of swallowing function
72131 Ct scan of lower spine without contrast
76705 Limited ultrasound scan of abdomen
73562 X-ray of knee, 3 views
36558 Insertion of tunneled central venous tube for infusion (5 years or older)
36561 Insertion of central venous tube with port (5 years or older)
71260 Ct scan of chest with contrast
76700 Complete ultrasound scan of abdomen
78452 Nuclear medicine studies of heart muscle at rest and with stress and spect
70486 Ct scan of face without contrast
72170 X-ray of pelvis, 1-2 views
72100 X-ray of lower and sacral spine, 2-3 views
74174 Ct scan of blood vessels of abdomen and pelvis with contrast
36590 Removal of central venous tube with port or pump
49440 Insertion of stomach tube using fluoroscopic guidance with contrast
73130 X-ray of hand, minimum of 3 views
74181 Mri scan of abdomen without contrast
76377 3d radiographic procedure with computerized image postprocessing
73560 X-ray of knee, 1-2 views
73630 X-ray of foot, minimum of 3 views
78815 Nuclear medicine study from skull base to mid-thigh with ct scan
73110 X-ray of wrist, minimum of 3 views
73700 Ct scan of leg without contrast
76942 Ultrasonic guidance for needle placement
70553 Mri scan of brain before and after contrast
73590 X-ray of lower leg, 2 views
73060 X-ray of upper arm, minimum of 2 views

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.