NEVVI Medicare utilization intelligence

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CHANG, SEANM.D. NPI 1801108568 Clinician

Diagnostic Radiology · OXNARD, CA

Specialty Diagnostic Radiology — from billed Medicare claims
Trained UNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE — medical school, self-reported to CMS
In practice about 21 years since medical school (class of 2005, self-reported to CMS)
Location OXNARD, CA · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 39 codes billed · 19,348 disclosed volume (CY2024 — most recent year in data)
Current groups
member of 29 groups; the volumes below are this clinician's personal volume and are not attributed to any single group

Group affiliation since 2019

20192026
BAPTIST PHYSICIAN NETWORK
2026
CAMELOT RADIOLOGY ASSOCIATES LTD
2026
CHEYENNE RADIOLOGY GROUP
2026
CHICKASAW NATION DIVISION OF HEALTH
2026
CIBOLA GENERAL HOSPITAL CORPORATION
2026
COLUMBUS REGIONAL HEALTHCARE SYSTEM
2026
CUMBERLAND COUNTY HOSPITAL SYSTEM INC
2026
DIAGNOSTIC RADIOLOGY OF ANDERSON PA
2026
GIBSON COMMUNITY HOSPITAL ASSOCIATION
2026
MAHASKA COUNTY HOSPITAL
2026
OTERO COUNTY HOSPITAL ASSOCIATION
2026
PHYSICIANS OF CAPE COD HOSPITAL
2026
ROSEBUD INDIAN HEALTH SERVICE
2026
SOUTHEAST IOWA REGIONAL MEDICAL CENTER INC
2026
X-RAY ASSOCIATES OF NEW MEXICO PC
2026
ALLEN MEMORIAL HOSPITAL CORPORATION
2025–2026
AVERA MCKENNAN
2025–2026
DIAGNOSTIC RADIOLOGY PC
2025–2026
FREEPORT MEMORIAL HOSPITAL
2025–2026
HANNIBAL REGIONAL HEALTHCARE SYSTEM INC
2025–2026
MCFARLAND CLINIC PC
2025–2026
PLAINS RADIOLOGY SERVICES LLC
2025–2026
RADIANT IMAGING INC
2025–2026
RADIOLOGY CONSULTANTS OF IOWA PLC
2025–2026
SCOTLAND MEMORIAL HOSPITAL, INC
2025–2026
STATE UNIVERSITY OF IOWA
2025–2026
TRINITY HEALTH
2025–2026
VALLEY RADIOLOGY P A
2025–2026
PALMS IMAGING MEDICAL GROUP
2019–2024

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 2026-01

Year: 2024 · 2023 · 2022  · 2021  · 2020 

Provider overview · all codes · CY2024

The full analytics for this provider

Premium

The billed-volume positioning, practice focus, and economics behind this provider — computed on 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
A9585 Injection, gadobutrol, 0.1 ml
Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml
70553 Mri scan of brain before and after contrast
71045 X-ray of chest, 1 view
76536 Ultrasound scan of head and neck soft tissue
70450 Ct scan head or brain without contrast
72148 Mri scan of lower spinal canal without contrast
76770 Complete ultrasound scan behind abdominal cavity
76700 Complete ultrasound scan of abdomen
70551 Mri scan of brain without contrast
76882 Limited ultrasound scan of joint or other extremity structure except blood vessels
74177 Ct scan of abdomen and pelvis with contrast
93970 Ultrasound study of arm or leg veins with compression and maneuvers
72125 Ct scan of upper spine without contrast
72141 Mri scan of upper spinal canal without contrast
76856 Complete ultrasound scan of pelvis
93971 Ultrasound study of one arm or leg veins with compression and maneuvers
76705 Limited ultrasound scan of abdomen
71275 Ct scan of blood vessels of chest with contrast
76830 Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina
74176 Ct scan of abdomen and pelvis without contrast
72197 Mri scan of pelvis before and after contrast
71046 X-ray of chest, 2 views
10005 Fine needle aspiration biopsy using ultrasound guidance, first growth
93925 Ultrasound of leg arteries or artery grafts
70543 Mri scan of bone of eye socket, face, and/or neck before and after contrast
71250 Ct scan of chest without contrast
72131 Ct scan of lower spine without contrast
72158 Mri scan of lower spinal canal before and after contrast
72170 X-ray of pelvis, 1-2 views
74018 X-ray of abdomen, 1 view
93923 Complete ultrasound study of arm and leg arteries
70486 Ct scan of face without contrast
71260 Ct scan of chest with contrast
70544 Mri scan of blood vessels of head without contrast
73221 Mri scan of arm joint without contrast
77049 Mri scan of both breasts
70496 Ct scan of blood vessels of head with contrast
70498 Ct scan of blood vessels of neck 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.