NEVVI Medicare utilization intelligence

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SCHAMBLIN, MARKM.D. NPI 1083645360 Clinician

Orthopedic Surgery · VAN NUYS, CA

Specialty Orthopedic Surgery — from billed Medicare claims
Trained SAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE — medical school, self-reported to CMS
In practice about 28 years since medical school (class of 1998, self-reported to CMS)
Location VAN NUYS, CA · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 15 codes billed · 3,338 disclosed services (CY2024 — most recent year in data)
Current groups

Group affiliation since 2019

20192026
REGENTS OF THE UNIVERSITY OF CALIFORNIA
2020–2026
SOUTHERN CALIFORNIA ORTHOPEDIC INSTITUTE L.P
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 2011-02

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 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
J7325 Hyaluronan or derivative, synvisc or synvisc-one, for intra-articular injection, 1 mg
J1010 Injection, methylprednisolone acetate, 1 mg
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
73030 X-ray of shoulder, minimum of 2 views
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
20611 Aspiration and/or injection of fluid large joint using ultrasound guidance
73564 X-ray of knee, 4 or more views
20610 Aspiration and/or injection of fluid from large joint
29827 Repair of shoulder rotator cuff using an endoscope
29826 Shaving of part of shoulder bone and repair of ligament using an endoscope
29828 Release of tendon connecting biceps muscle and shoulder using an endoscope
23472 Prosthetic repair of shoulder joint, total shoulder
29823 Removal of extensive shoulder joint tissue using an endoscope
73080 X-ray of elbow, minimum of 3 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.