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CHAIKEN, LISAMD NPI 1528062023 Clinician

Radiation Oncology · SANTA MONICA, CA

Specialty Radiation Oncology — from billed Medicare claims
Trained UNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE — medical school, self-reported to CMS
In practice about 38 years since medical school (class of 1988, self-reported to CMS)
Location SANTA MONICA, CA · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 32 codes billed · 11,496 disclosed volume (CY2024 — most recent year in data)
Current groups
member of 2 groups; the volumes below are this clinician's personal volume and are not attributed to any single group
Hospital affiliations
  • MERCYONE SIOUXLAND MEDICAL CENTER · Hospital · CCN 160153
  • ST LUKES REGIONAL MEDICAL CENTER · Hospital · CCN 160146
registry affiliations from the CMS Doctors & Clinicians facility file — an administrative affiliation, not a statement about where care is delivered

Group affiliation since 2019

20192026
NORTHWEST IOWA HOSPITAL CORPORATION
2026
SIOUXLAND REGIONAL CANCER CENTER
2023–2026
CITY OF HOPE MEDICAL FOUNDATION
2019–2023

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 2020-11
Data year CY2024 CY2023 CY2022  CY2021  CY2020 

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
Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml
77014 Ct guidance for insertion of radiation therapy fields
G6015 Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session
G6012 Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 6-10 mev
77427 Radiation treatment management, 5 treatment sessions
77336 Continuing radiation therapy consultation per week
77300 Calculation of radiation therapy dose
77334 Design and construction of complex radiation treatment device
G6017 Intra-fraction localization and tracking of target or patient motion during delivery of radiation therapy (eg,3d positional tracking, gating, 3d surface tracking), each fraction of treatment
A9595 Piflufolastat f-18, diagnostic, 1 millicurie
77263 Complex radiation therapy planning
78815 Nuclear medicine study from skull base to mid-thigh with ct scan
77301 High precision radiation therapy planning
77338 Design and construction of radiation treatment device for high precision radiation therapy
A9552 Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
77373 Cranial lesion surgery using radiation over multiple sessions
77470 Special radiation treatment
G6013 Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 11-19 mev
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area
77290 Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved
77295 3d radiation therapy planning
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
77293 Obtaining respiratory data needed to develop the optimal radiation treatment
71046 X-ray of chest, 2 views

Showing the top 25 of 32 procedures this clinician billed. The full list is part of the premium platform. Notify me at launch →

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.