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RYDER, DAVIDM.D. NPI 1477501054 Clinician

Diagnostic Radiology · PHOENIX, AZ

Specialty Diagnostic Radiology — from billed Medicare claims
Trained UNIVERSITY OF TEXAS MEDICAL SCHOOL AT HOUSTON — medical school, self-reported to CMS
In practice about 38 years since medical school (class of 1988, self-reported to CMS)
Location PHOENIX, AZ · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 54 codes billed · 4,296 disclosed services (CY2024 — most recent year in data)
Current groups
member of 3 groups; the volumes below are this clinician's personal volume and are not attributed to any single group

Group affiliation since 2019

20192026
HEALTH DIAGNOSTICS OF CALIFORNIA A PROFESSIONAL CORPORATION
2026
GILA RIVER HEALTH CARE CORPORATION
2024–2026
SMI IMAGING LLC
2019–2026
HEALTH DIAGNOSTICS OF CALIFORNIA A PROFESSIONAL CORPORATION
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 2011-01

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
A9575 Injection, gadoterate meglumine, 0.1 ml
77063 Screening 3d breast mammography
77067 Screening mammography
A9595 Piflufolastat f-18, diagnostic, 1 millicurie
71046 X-ray of chest, 2 views
77080 Dxa bone density measurement of hip, pelvis, spine
72148 Mri scan of lower spinal canal without contrast
G0279 Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function
77065 Diagnostic mammography of 1 breast
78815 Nuclear medicine study from skull base to mid-thigh with ct scan
76641 Complete ultrasound scan of 1 breast
76770 Complete ultrasound scan behind abdominal cavity
76642 Limited ultrasound scan of 1 breast
76700 Complete ultrasound scan of abdomen
72141 Mri scan of upper spinal canal without contrast
71250 Ct scan of chest without contrast
77066 Diagnostic mammography of both breasts
A9552 Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries
73721 Mri scan of leg joint without contrast
73030 X-ray of shoulder, minimum of 2 views
74176 Ct scan of abdomen and pelvis without contrast
19083 Biopsy of breast and placement of locating device using ultrasound, first growth
73562 X-ray of knee, 3 views
72100 X-ray of lower and sacral spine, 2-3 views
72146 Mri scan of middle spinal canal without contrast
70551 Mri scan of brain without contrast
73502 X-ray of hip, 2-3 views
73221 Mri scan of arm joint without contrast
72110 X-ray of lower and sacral spine, minimum of 4 views
76536 Ultrasound scan of head and neck soft tissue
70450 Ct scan head or brain without contrast
A9503 Technetium tc-99m medronate, diagnostic, per study dose, up to 30 millicuries
70486 Ct scan of face without contrast
72040 X-ray of upper spine, 2-3 views
71271 Low dose ct scan of chest for lung cancer screening
75571 Ct scan of heart with evaluation of blood vessel calcium
93971 Ultrasound study of one arm or leg veins with compression and maneuvers
73560 X-ray of knee, 1-2 views
78830 Nuclear medicine study, spect imaging with concurrent ct scan, 1 area or single acquisition, single day imaging
72131 Ct scan of lower spine without contrast
76882 Limited ultrasound scan of joint or other extremity structure except blood vessels
72050 X-ray of upper spine, 4-5 views
93970 Ultrasound study of arm or leg veins with compression and maneuvers
73130 X-ray of hand, minimum of 3 views
73630 X-ray of foot, minimum of 3 views
76377 3d radiographic procedure with computerized image postprocessing
73700 Ct scan of leg without contrast
78803 Nuclear medicine study, spect imaging, 1 area or single acquisition, single day imaging
93925 Ultrasound of leg arteries or artery grafts
A9584 Iodine 1-123 ioflupane, diagnostic, per study dose, up to 5 millicuries
93880 Ultrasound of both sides of head and neck blood flow
74018 X-ray of abdomen, 1 view
76856 Complete ultrasound scan of pelvis

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.