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WOO, DAVIDM.D. NPI 1407988272 Clinician

Diagnostic Radiology · WALNUT CREEK, CA

Specialty Diagnostic Radiology — from billed Medicare claims
Trained NEW YORK UNIVERSITY SCHOOL OF MEDICINE — medical school, self-reported to CMS
In practice about 27 years since medical school (class of 1999, self-reported to CMS)
Location WALNUT CREEK, CA · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 55 codes billed · 5,703 disclosed volume (CY2024 — most recent year in data)
Current groups
member of 4 groups; the volumes below are this clinician's personal volume and are not attributed to any single group

Group affiliation since 2019

20192026
JOHN MUIR PHYSICIAN NETWORK
2025–2026
JOHN MUIR TRAUMA PHYSICIANS BILLING SERVICE
2025–2026
BAY IMAGING CONSULTANTS MEDICAL GROUP INC
2019–2026
JOHN MUIR MAGNETIC IMAGING CENTER
2019–2026
MICHAEL P SHERMAN MD PHD A MEDICAL CORPORATION
2024
JOHN MUIR TRAUMA PHYSICIANS BILLING SERVICE
2019–2023
NEUROSCAN
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 2023-12

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 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
71045 X-ray of chest, 1 view
99152 Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes
71250 Ct scan of chest without contrast
74177 Ct scan of abdomen and pelvis with contrast
71046 X-ray of chest, 2 views
76937 Ultrasonic guidance for blood vessel access
74183 Mri scan of abdomen before and after contrast
77012 Review by radiologist of ct guidance for needle placement
70450 Ct scan head or brain without contrast
77001 Fluoroscopic guidance for insertion or removal of central vein access device
71260 Ct scan of chest with contrast
74176 Ct scan of abdomen and pelvis without contrast
10005 Fine needle aspiration biopsy using ultrasound guidance, first growth
72197 Mri scan of pelvis before and after contrast
74018 X-ray of abdomen, 1 view
74174 Ct scan of blood vessels of abdomen and pelvis with contrast
75574 Ct scan of blood vessels and grafts of heart with contrast
73564 X-ray of knee, 4 or more views
71275 Ct scan of blood vessels of chest with contrast
76770 Complete ultrasound scan behind abdominal cavity
75572 Ct scan of heart structure with contrast
73030 X-ray of shoulder, minimum of 2 views
49083 Drainage of fluid from abdominal cavity using imaging guidance
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)
74230 Imaging for evaluation of swallowing function
76705 Limited ultrasound scan of abdomen
76942 Ultrasonic guidance for needle placement
38222 Biopsy and aspiration of bone marrow sample for diagnosis
75580 Analysis of data from ct study of heart blood vessels to assess severity of heart artery disease, with interpretation and report
93971 Ultrasound study of one arm or leg veins with compression and maneuvers
73502 X-ray of hip, 2-3 views
74178 Ct scan of abdomen and pelvis before and after contrast
75726 Review by radiologist of abdominal artery image
76536 Ultrasound scan of head and neck soft tissue
73630 X-ray of foot, minimum of 3 views
72110 X-ray of lower and sacral spine, minimum of 4 views
93970 Ultrasound study of arm or leg veins with compression and maneuvers
72125 Ct scan of upper spine without contrast
76700 Complete ultrasound scan of abdomen
47000 Needle biopsy of liver through skin
49450 Replacement of stomach or large bowel tube using fluoroscopic guidance with contrast
74221 Double contrast x-ray of esophagus
70498 Ct scan of blood vessels of neck with contrast
73130 X-ray of hand, minimum of 3 views
20206 Needle biopsy of muscle
50432 Placement of tube of kidney using imaging guidance with review by radiologist
71271 Low dose ct scan of chest for lung cancer screening
73560 X-ray of knee, 1-2 views
93880 Ultrasound of both sides of head and neck blood flow
70496 Ct scan of blood vessels of head with contrast
72050 X-ray of upper spine, 4-5 views
73610 X-ray of ankle, minimum of 3 views
72170 X-ray of pelvis, 1-2 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.