Experienced in HER2 Negative Breast Cancer

Dr. Jeffrey M. Stewart

Hematology Oncology | Hematology | Oncology
Crystal Run Healthcare Physicians Llp
300 Crystal Run Rd, 
Middletown, NY 
Clinical Trials:Currently Recruiting for 2 Trials
Experienced in HER2 Negative Breast Cancer
Crystal Run Healthcare Physicians Llp
300 Crystal Run Rd, 
Middletown, NY 
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Overview

Jeffrey Stewart is a Hematologist Oncology specialist and a Hematologist in Middletown, New York. Dr. Stewart is rated as an Experienced provider by MediFind in the treatment of HER2 Negative Breast Cancer. His top areas of expertise are Neuroendocrine Tumor, Lung Cancer, Shwartzman Phenomenon, Pleuropulmonary Blastoma, and Bone Marrow Aspiration.

His clinical research consists of co-authoring 6 peer reviewed articles and participating in 19 clinical trials. MediFind looks at clinical research from the past 15 years. In particular, he has participated in 1 clinical trial in the study of HER2 Negative Breast Cancer.

Graduate Institution
University Of Florida College Of Medicine
Specialties
Hematology Oncology
Hematology
Oncology
Licenses
Internal Medicine in NY
Hospital Affiliations
St Anthony Community Hospital
Garnet Health Medical Center Catskills
Garnet Health Medical Center
St Luke's Cornwall Hospital
Languages Spoken
English
Gender
Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
BMC HealthNet
  • HMO
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE SNP
Capital District Physicians Health
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
Cigna
  • EPO
  • HMO
  • PPO
EmblemHealth
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE PART D
Geisinger
  • HMO
  • POS
  • PPO
Highmark
  • EPO
  • HMO
  • PPO
Horizon Healthcare
  • EPO
  • POS
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
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  • STATE MEDICAID
MVP Health
  • EPO
  • PPO
Nippon Life
  • INSURANCE PLAN
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Walgreens
  • MEDICARE DISCOUNT CARD
  • MEDICARE PDP
  • OTHER MEDICARE
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
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Locations

CRYSTAL RUN HEALTHCARE PHYSICIANS LLP
300 Crystal Run Rd, Middletown, NY 10941

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

19 Clinical Trials

Phase II Study of Osimertinib (AZD9291) in Advanced NSCLC Patients With Exon 20 Insertion Mutations in EGFR
Phase II Study of Osimertinib (AZD9291) in Advanced NSCLC Patients With Exon 20 Insertion Mutations in EGFR
Enrollment Status: Recruiting
Publish Date: November 28, 2025
Intervention Type: Procedure, Drug
Study Phase: Phase 2
Phase II Randomized Trial of Radiotherapy With or Without Cisplatin for Surgically Resected Squamous Cell Carcinoma of the Head and Neck (SCCHN) With TP53 Sequencing
Phase II Randomized Trial of Radiotherapy With or Without Cisplatin for Surgically Resected Squamous Cell Carcinoma of the Head and Neck (SCCHN) With TP53 Sequencing
Enrollment Status: Recruiting
Publish Date: November 13, 2025
Intervention Type: Drug, Other, Radiation
Study Drug: Cisplatin
Study Phase: Phase 2
A Phase II/III Study of Peri-Operative Nivolumab and Ipilimumab in Patients With Locoregional Esophageal and Gastroesophageal Junction Adenocarcinoma
A Phase II/III Study of Peri-Operative Nivolumab and Ipilimumab in Patients With Locoregional Esophageal and Gastroesophageal Junction Adenocarcinoma
Enrollment Status: Suspended
Publish Date: December 17, 2025
Intervention Type: Biological, Drug, Procedure, Radiation
Study Drugs: Carboplatin, Ipilimumab, Nivolumab, Paclitaxel
Study Phase: Phase 2/Phase 3
A Phase II Randomized Study of Adjuvant Versus NeoAdjuvant Pembrolizumab (MK-3475) for Clinically Detectable Stage III-IV High-Risk Melanoma
A Phase II Randomized Study of Adjuvant Versus NeoAdjuvant Pembrolizumab (MK-3475) for Clinically Detectable Stage III-IV High-Risk Melanoma
Enrollment Status: Active_not_recruiting
Publish Date: December 05, 2025
Intervention Type: Procedure, Biological
Study Drug: Pembrolizumab
Study Phase: Phase 2
A Phase II Clinical Trial Platform of Sensitization Utilizing Total Neoadjuvant Therapy (TNT) in Rectal Cancer
A Phase II Clinical Trial Platform of Sensitization Utilizing Total Neoadjuvant Therapy (TNT) in Rectal Cancer
Enrollment Status: Completed
Publish Date: December 04, 2025
Intervention Type: Drug, Radiation, Biological
Study Phase: Phase 2
A Phase II Trial of Trametinib With Docetaxel in Patients With KRAS Mutation Positive Non-Small Cell Lung Cancer (NSCLC) and Progressive Disease Following One or Two Prior Systemic Therapies
A Phase II Trial of Trametinib With Docetaxel in Patients With KRAS Mutation Positive Non-Small Cell Lung Cancer (NSCLC) and Progressive Disease Following One or Two Prior Systemic Therapies
Enrollment Status: Active_not_recruiting
Publish Date: December 02, 2025
Intervention Type: Other, Drug
Study Drugs: Docetaxel, Trametinib
Study Phase: Phase 2
Randomized Phase II Study of 2nd Line FOLFIRI Versus Modified FOLFIRI With PARP Inhibitor ABT-888 (Veliparib) (NSC-737664) in Metastatic Pancreatic Cancer
Randomized Phase II Study of 2nd Line FOLFIRI Versus Modified FOLFIRI With PARP Inhibitor ABT-888 (Veliparib) (NSC-737664) in Metastatic Pancreatic Cancer
Enrollment Status: Active_not_recruiting
Publish Date: December 01, 2025
Intervention Type: Drug, Other
Study Drugs: Fluorouracil, Irinotecan Hydrochloride, Leucovorin Calcium, Veliparib
Study Phase: Phase 2
Phase III Randomized Adjuvant Study of Pembrolizumab in muScle invaSive and locAlly aDvanced urOthelial caRcinoma (AMBASSADOR) Versus Observation
Phase III Randomized Adjuvant Study of Pembrolizumab in muScle invaSive and locAlly aDvanced urOthelial caRcinoma (AMBASSADOR) Versus Observation
Enrollment Status: Active_not_recruiting
Publish Date: November 17, 2025
Intervention Type: Other, Biological, Procedure
Study Drug: Pembrolizumab
Study Phase: Phase 3
A Randomized, Phase III Trial to Evaluate the Efficacy and Safety of Pembrolizumab (MK-3475) as Adjuvant Therapy for Triple Receptor-Negative Breast Cancer With >/= 1 CM Residual Invasive Cancer or Positive Lymph Nodes (ypN1mi, ypN1-3) After Neoadjuvant Chemotherapy
A Randomized, Phase III Trial to Evaluate the Efficacy and Safety of Pembrolizumab (MK-3475) as Adjuvant Therapy for Triple Receptor-Negative Breast Cancer With >/= 1 CM Residual Invasive Cancer or Positive Lymph Nodes (ypN1mi, ypN1-3) After Neoadjuvant Chemotherapy
Enrollment Status: Active_not_recruiting
Publish Date: November 17, 2025
Intervention Type: Other, Radiation, Procedure, Biological
Study Drug: Pembrolizumab
Study Phase: Phase 3
Randomized Phase III Trial of MEDI4736 (Durvalumab) as Concurrent and Consolidative Therapy or Consolidative Therapy Alone for Unresectable Stage 3 NSCLC
Randomized Phase III Trial of MEDI4736 (Durvalumab) as Concurrent and Consolidative Therapy or Consolidative Therapy Alone for Unresectable Stage 3 NSCLC
Enrollment Status: Active_not_recruiting
Publish Date: November 17, 2025
Intervention Type: Drug, Biological
Study Drugs: Carboplatin, Cisplatin, Durvalumab, Etoposide, Paclitaxel, Pemetrexed Disodium
Study Phase: Phase 3
Phase II Study of Adding the Anti-PD-1 Pembrolizumab to Tyrosine Kinase Inhibitors in Patients With Chronic Myeloid Leukemia and Persistently Detectable Minimal Residual Disease
Phase II Study of Adding the Anti-PD-1 Pembrolizumab to Tyrosine Kinase Inhibitors in Patients With Chronic Myeloid Leukemia and Persistently Detectable Minimal Residual Disease
Enrollment Status: Active_not_recruiting
Publish Date: November 13, 2025
Intervention Type: Drug, Other, Biological
Study Drugs: Dasatinib, Imatinib Mesylate, Nilotinib, Pembrolizumab
Study Phase: Phase 2
Phase III IGRT and SBRT vs IGRT and Hypofractionated IMRT for Localized Intermediate Risk Prostate Cancer
Phase III IGRT and SBRT vs IGRT and Hypofractionated IMRT for Localized Intermediate Risk Prostate Cancer
Enrollment Status: Active_not_recruiting
Publish Date: September 05, 2025
Intervention Type: Other, Radiation
Study Phase: Phase 3
Randomized Phase II Clinical Trial of Cisplatin/Carboplatin and Etoposide (CE) Alone or in Combination With Nivolumab as Frontline Therapy for Extensive Stage Small Cell Lung Cancer (ED-SCLC)
Randomized Phase II Clinical Trial of Cisplatin/Carboplatin and Etoposide (CE) Alone or in Combination With Nivolumab as Frontline Therapy for Extensive Stage Small Cell Lung Cancer (ED-SCLC)
Enrollment Status: Completed
Publish Date: July 03, 2025
Intervention Type: Drug, Biological
Study Drugs: Carboplatin, Cisplatin, Etoposide, Nivolumab
Study Phase: Phase 2
A Randomized Phase I/II Study of Optimal Induction Therapy of Bortezomib, Dexamethasone and Lenalidomide With or Without Elotuzumab (NSC-764479) for Newly Diagnosed High Risk Multiple Myeloma (HRMM)
A Randomized Phase I/II Study of Optimal Induction Therapy of Bortezomib, Dexamethasone and Lenalidomide With or Without Elotuzumab (NSC-764479) for Newly Diagnosed High Risk Multiple Myeloma (HRMM)
Enrollment Status: Active_not_recruiting
Publish Date: June 10, 2025
Intervention Type: Drug, Other, Biological
Study Drugs: Bortezomib, Dexamethasone, Elotuzumab, Lenalidomide
Study Phase: Phase 1/Phase 2
A Phase III Randomized Study of Nivolumab Plus Ipilimumab Versus Nivolumab for Previously Treated Patients With Stage IV Squamous Cell Lung Cancer and No Matching Biomarker (Lung-Map Sub-Study)
A Phase III Randomized Study of Nivolumab Plus Ipilimumab Versus Nivolumab for Previously Treated Patients With Stage IV Squamous Cell Lung Cancer and No Matching Biomarker (Lung-Map Sub-Study)
Enrollment Status: Active_not_recruiting
Publish Date: May 21, 2025
Intervention Type: Other, Biological
Study Drugs: Ipilimumab, Nivolumab
Study Phase: Phase 3
Phase III Randomized, Placebo-Controlled Clinical Trial Evaluating the Use of Adjuvant Endocrine Therapy +/- One Year of Everolimus in Patients With High-Risk, Hormone Receptor-Positive and HER2/Neu Negative Breast Cancer
Phase III Randomized, Placebo-Controlled Clinical Trial Evaluating the Use of Adjuvant Endocrine Therapy +/- One Year of Everolimus in Patients With High-Risk, Hormone Receptor-Positive and HER2/Neu Negative Breast Cancer
Enrollment Status: Active_not_recruiting
Publish Date: December 27, 2024
Intervention Type: Drug, Other
Study Drugs: Anastrozole, Everolimus, Exemestane, Goserelin Acetate, Letrozole, Leuprolide Acetate, Tamoxifen Citrate
Study Phase: Phase 3
A Phase II/III Trial of Neoadjuvant FOLFOX With Selective Use of Combined Modality Chemoradiation Versus Preoperative Combined Modality Chemoradiation for Locally Advanced Rectal Cancer Patients Undergoing Low Anterior Resection With Total Mesorectal Excision (PROSPECT)
A Phase II/III Trial of Neoadjuvant FOLFOX With Selective Use of Combined Modality Chemoradiation Versus Preoperative Combined Modality Chemoradiation for Locally Advanced Rectal Cancer Patients Undergoing Low Anterior Resection With Total Mesorectal Excision (PROSPECT)
Enrollment Status: Active_not_recruiting
Publish Date: February 02, 2024
Intervention Type: Procedure, Other, Drug
Study Phase: Phase 2/Phase 3
A Randomized Phase III Double Blinded Placebo Controlled Trial of Aspirin as Adjuvant Therapy for HER2 Negative Breast Cancer: The ABC Trial
A Randomized Phase III Double Blinded Placebo Controlled Trial of Aspirin as Adjuvant Therapy for HER2 Negative Breast Cancer: The ABC Trial
Enrollment Status: Terminated
Publish Date: April 05, 2023
Intervention Type: Other, Drug
Study Drug: Aspirin
Study Phase: Phase 3
A Phase II Study of Palbociclib for Previously Treated Cell Cycle Gene Alteration Positive Patients With Stage IV Squamous Cell Lung Cancer (Lung-Map Sub-Study)
A Phase II Study of Palbociclib for Previously Treated Cell Cycle Gene Alteration Positive Patients With Stage IV Squamous Cell Lung Cancer (Lung-Map Sub-Study)
Enrollment Status: Completed
Publish Date: May 27, 2021
Intervention Type: Other, Drug
Study Drugs: Docetaxel, Palbociclib
Study Phase: Phase 2/Phase 3
View 17 Less Clinical Trials

6 Total Publications

Radiation Therapy for Gastric Cancer: An ASTRO Clinical Practice Guideline.
Radiation Therapy for Gastric Cancer: An ASTRO Clinical Practice Guideline.
Journal: Practical radiation oncology
Published: October 06, 2025
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Areas of Expertise

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