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NACKOS, ELENIMD NPI 1023339819 Clinician

Hematology-Oncology · WESTBROOK, ME

Specialty Hematology-Oncology — from billed Medicare claims
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Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 44 codes billed · 9,619 disclosed volume (CY2024 — most recent year in data)
Current groups
Hospital affiliations
  • MAINE GENERAL MEDICAL CENTER · Hospital · CCN 200039
  • MAINEHEALTH MAINE MEDICAL CENTER · Hospital · CCN 200009
  • MAINEHEALTH MID COAST HOSPITAL · Hospital · CCN 200021
  • MEMORIAL HOSPITAL, THE · Hospital · CCN 301307
  • NORTHERN LIGHT MERCY HOSPITAL · Hospital · CCN 200008
registry affiliations from the CMS Doctors & Clinicians facility file — an administrative affiliation, not a statement about where care is delivered

Group affiliation since 2019

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Membership spans across every group on this clinician's 2019+ registry record, departed groups included. 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 2026-04
Data year CY2024 CY2023 CY2022  CY2021  CY2020 

Provider overview · all codes · CY2024

The full analytics for this provider

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The full billed-volume analytics for this provider — its position among specialty peers, practice focus, and the payments behind it — computed from 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
J0897 Injection, denosumab, 1 mg
J9395 Injection, fulvestrant, 25 mg
J1626 Injection, granisetron hydrochloride, 100 mcg
J1100 Injection, dexamethasone sodium phosphate, 1 mg
80053 Blood test, comprehensive group of blood chemicals
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
36415 Insertion of needle into vein for collection of blood sample
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
86300 Immunologic analysis for detection of tumor antigen, quantitative; ca 15-3
96375 Injection of additional new drug or substance into vein
96413 Administration of chemotherapy into vein, 1 hour or less
J3489 Injection, zoledronic acid, 1 mg
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
96402 Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
96372 Injection of drug or substance under skin or into muscle
J7030 Infusion, normal saline solution , 1000 cc
96365 Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
83735 Magnesium level
84443 Blood test, thyroid stimulating hormone (tsh)
82306 Vitamin d-3 level
82728 Ferritin (blood protein) level
83540 Iron level
83550 Iron binding capacity
96361 Infusion into a vein for hydration, each additional hour

Showing the top 25 of 44 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.