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HALAAS, JEFFREYMD NPI 1851346928 Clinician

Hematology-Oncology · BREWSTER, NY

Specialty Hematology-Oncology — from billed Medicare claims
In practice about 30 years since medical school (class of 1996, self-reported to CMS)
Location BREWSTER, NY · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 49 codes billed · 82,849 disclosed services (CY2024 — most recent year in data)
Current groups

Group affiliation since 2019

20192026
OPTUM MEDICAL CARE PC
2019–2026

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 2016-11

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
J0881 Injection, darbepoetin alfa, 1 microgram (non-esrd use)
Q0138 Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use)
J9271 Injection, pembrolizumab, 1 mg
J1453 Injection, fosaprepitant, 1 mg
36415 Insertion of needle into vein for collection of blood sample
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
J1100 Injection, dexamethasone sodium phosphate, 1 mg
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
J2469 Injection, palonosetron hcl, 25 mcg
80053 Blood test, comprehensive group of blood chemicals
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
96375 Injection of additional new drug or substance into vein
Q5111 Injection, pegfilgrastim-cbqv (udenyca), biosimilar, 0.5 mg
J2919 Injection, methylprednisolone sodium succinate, 5 mg
96413 Administration of chemotherapy into vein, 1 hour or less
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
82728 Ferritin (blood protein) level
96365 Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
96372 Injection of drug or substance under skin or into muscle
83615 Lactate dehydrogenase (enzyme) level
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
83540 Iron level
83550 Iron binding capacity
J3489 Injection, zoledronic acid, 1 mg
J1200 Injection, diphenhydramine hcl, up to 50 mg
82378 Carcinoembryonic antigen (cea) protein level
84153 Psa (prostate specific antigen) measurement, total
84443 Blood test, thyroid stimulating hormone (tsh)
82746 Folic acid level, serum
96415 Administration of chemotherapy into vein, each additional hour
82607 Cyanocobalamin (vitamin b-12) level
85045 Red blood count, automated test
96417 Administration of additional new drug or substance into vein, 1 hour or less
96367 Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less
J3490 Unclassified drugs
96366 Infusion into a vein for therapy, prevention, or diagnosis, each additional hour
84403 Testosterone (hormone) level, total
83010 Haptoglobin (serum protein) level
82306 Vitamin d-3 level
96523 Irrigation of implanted venous access drug delivery device
99195 Drawing of blood for a medical problem
J7030 Infusion, normal saline solution , 1000 cc
85610 Blood test, clotting time
38222 Biopsy and aspiration of bone marrow sample for diagnosis
96361 Infusion into a vein for hydration, each additional hour
96374 Injection of drug or substance into vein
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more

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.