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GRUENSTEIN, STEVENM.D. NPI 1407855307 Clinician

Hematology-Oncology · NEW YORK, NY

Specialty Hematology-Oncology — from billed Medicare claims
In practice about 42 years since medical school (class of 1984, self-reported to CMS)
Location NEW YORK, NY · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 84 codes billed · 109,830 disclosed services (CY2024 — most recent year in data)
Current groups

Group affiliation since 2019

20192026
NORTH SHORE HEMATOLOGY ONCOLOGY ASSOCIATES 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 2020-01

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
J1439 Injection, ferric carboxymaltose, 1 mg
J0881 Injection, darbepoetin alfa, 1 microgram (non-esrd use)
88185 Flow cytometry technique for dna or cell analysis, each additional marker
J0897 Injection, denosumab, 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
80053 Blood test, comprehensive group of blood chemicals
84100 Phosphate level
83615 Lactate dehydrogenase (enzyme) level
83735 Magnesium level
84550 Uric acid level, blood
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
82728 Ferritin (blood protein) level
83540 Iron level
83550 Iron binding capacity
J1100 Injection, dexamethasone sodium phosphate, 1 mg
82784 Gammaglobulin (immune system protein) measurement
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
85651 Red blood cell sedimentation rate, to detect inflammation, non-automated
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
83521 Measurement of immunoglobulin light chains
82607 Cyanocobalamin (vitamin b-12) level
84165 Protein measurement, serum
86334 Immunologic analysis technique on serum (immunofixation)
85044 Red blood count, manual test
88184 Flow cytometry technique for dna or cell analysis, first marker
84443 Blood test, thyroid stimulating hormone (tsh)
96372 Injection of drug or substance under skin or into muscle
82746 Folic acid level, serum
84153 Psa (prostate specific antigen) measurement, total
82378 Carcinoembryonic antigen (cea) protein level
83010 Haptoglobin (serum protein) level
82306 Vitamin d-3 level
83036 Hemoglobin a1c level
86147 Cardiolipin antibody (tissue antibody) measurement
85610 Blood test, clotting time
86146 Beta 2 glycoprotein 1 antibody (autoantibody) measurement
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 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
82232 Beta-2 microglobulin (protein) level
96375 Injection of additional new drug or substance into vein
96413 Administration of chemotherapy into vein, 1 hour or less
86141 Measurement c-reactive protein for detection of infection or inflammation, high sensitivity
82785 Ige (immune system protein) level
85730 Coagulation assessment blood test, plasma or whole blood
82248 Bilirubin level, direct
96374 Injection of drug or substance into vein
82668 Erythropoietin (protein) level
85379 Coagulation function measurement, d-dimer; quantitative
96367 Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less
84439 Thyroxine (thyroid chemical), free
J1200 Injection, diphenhydramine hcl, up to 50 mg
80074 Acute hepatitis panel
99195 Drawing of blood for a medical problem
96415 Administration of chemotherapy into vein, each additional hour
86304 Immunologic analysis for detection of tumor antigen, quantitative; ca 125
86300 Immunologic analysis for detection of tumor antigen, quantitative; ca 15-3
86301 Immunologic analysis for detection of tumor antigen, quantitative; ca 19-9
96365 Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
99426 Principal care management services for a single high-risk disease, first 30 minutes of clinical staff time directed by health care professional, per calendar month
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
80061 Blood test, lipids (cholesterol and triglycerides)
84403 Testosterone (hormone) level, total
96402 Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle
83090 Homocysteine (amino acid) level
38222 Biopsy and aspiration of bone marrow sample for diagnosis
J1454 Injection, fosnetupitant 235 mg and palonosetron 0.25 mg
96417 Administration of additional new drug or substance into vein, 1 hour or less
85536 Blood smear for iron
G0452 Molecular pathology procedure; physician interpretation and report
81002 Urinalysis, manual test
96366 Infusion into a vein for therapy, prevention, or diagnosis, each additional hour
85384 Fibrinogen (factor 1) activity measurement
99439 Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month
86038 Screening test for autoimmune disorder
86431 Rheumatoid factor level
81219 Gene analysis (calreticulin), common variants
81270 Gene analysis (janus kinase 2) variant
81279 Gene analysis (janus kinase 2) targeted sequence analysis
81338 Gene analysis (mpl proto-oncogene, thrombopoietin receptor) for detection of common variants
82533 Cortisol (hormone) measurement, total
87389 Detection test by immunoassay technique for hiv-1 antigen and hiv-1 and hiv-2 antibodies
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 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.