Expertise in
23
conditions

Dr. Donald Northfelt

Oncology
Mayo Clinic Hospital In Arizona
5777 E Mayo Blvd, 
Phoenix, AZ 
Offers Telehealth
Expertise in
23
conditions
Mayo Clinic Hospital In Arizona
5777 E Mayo Blvd, 
Phoenix, AZ 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

Donald Northfelt is an Oncologist in Phoenix, Arizona. Dr. Northfelt is highly rated in 23 conditions, according to our data. His top areas of expertise are Breast Cancer, HER-2 Positive Breast Cancer, Angiosarcoma, Inflammatory Breast Cancer, and Bone Marrow Aspiration.

His clinical research consists of co-authoring 115 peer reviewed articles and participating in 23 clinical trials. MediFind looks at clinical research from the past 15 years.

Specialties
Oncology
Licenses
Internal Medicine in CO
Hospital Affiliations
Mayo Clinic Hospital
Phoenix Indian Medical Center
Languages Spoken
English
Gender
Male

Insurance

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Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem BCBS
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  • HMO
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Blue Cross Blue Shield
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Blue Shield of California
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  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
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  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Cambia Health Solutions
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  • INSURANCE PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
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Cigna
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EmblemHealth
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Health Care Services Corporation
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Health Net

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Humana
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Managed Medicaid
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Moda Health
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Oscar
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Premera Blue Cross
  • INSURANCE PLAN
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  • OTHER COMMERCIAL
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Sanford Health
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  • PPO
SelectHealth
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UnitedHealthcare
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  • HMO
  • POS
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VibrantRx
  • MEDICARE PDP
  • OTHER MEDICARE
Walgreens
  • MEDICARE DISCOUNT CARD
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Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
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Locations

Mayo Clinic Hospital In Arizona
5777 E Mayo Blvd, Phoenix, AZ 85054

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.

21 Clinical Trials

A Randomized, Open Label, Phase III Trial to Evaluate the Efficacy and Safety of Palbociclib + Anti-HER2 Therapy + Endocrine Therapy vs. Anti-HER2 Therapy + Endocrine Therapy After Induction Treatment for Hormone Receptor Positive (HR+)/HER2-Positive Metastatic Breast Cancer
A Randomized, Open Label, Phase III Trial to Evaluate the Efficacy and Safety of Palbociclib + Anti-HER2 Therapy + Endocrine Therapy vs. Anti-HER2 Therapy + Endocrine Therapy After Induction Treatment for Hormone Receptor Positive (HR+)/HER2-Positive Metastatic Breast Cancer
Enrollment Status: Active_not_recruiting
Publish Date: February 12, 2026
Intervention Type: Drug
Study Drugs: Palbociclib, Trastuzumab, Pertuzumab, Letrozole, Anastrozole, Exemestane, Fulvestrant
Study Phase: Phase 3
BYLieve: A Phase II, Multicenter, Open-label, Three-cohort, Non- Comparative Study to Assess the Efficacy and Safety of Alpelisib Plus Fulvestrant or Letrozole in Patients With PIK3CA Mutant, Hormone Receptor (HR) Positive, HER2-negative Advanced Breast Cancer (aBC), Who Have Progressed on or After Prior Treatments
BYLieve: A Phase II, Multicenter, Open-label, Three-cohort, Non- Comparative Study to Assess the Efficacy and Safety of Alpelisib Plus Fulvestrant or Letrozole in Patients With PIK3CA Mutant, Hormone Receptor (HR) Positive, HER2-negative Advanced Breast Cancer (aBC), Who Have Progressed on or After Prior Treatments
Enrollment Status: Completed
Publish Date: January 13, 2026
Intervention Type: Drug
Study Drugs: Alpelisib, Fulvestrant, Letrozole, Goserelin, Leuprolide
Study Phase: Phase 2
A Phase II Trial of Neoadjuvant PD 0332991, a Cyclin-Dependent Kinase (Cdk) 4/6 Inhibitor, in Combination With Anastrozole in Women With Clinical Stage 2 or 3 Estrogen Receptor Positive and HER2 Negative Breast Cancer
A Phase II Trial of Neoadjuvant PD 0332991, a Cyclin-Dependent Kinase (Cdk) 4/6 Inhibitor, in Combination With Anastrozole in Women With Clinical Stage 2 or 3 Estrogen Receptor Positive and HER2 Negative Breast Cancer
Enrollment Status: Active_not_recruiting
Publish Date: December 09, 2025
Intervention Type: Procedure, Drug
Study Drugs: PD0332991, Anastrozole, Goserelin
Study Phase: Phase 2
Window Trial of Abemaciclib for Surgically Resectable, Chemotherapy-Resistant, Triple Negative Breast Cancer (a BEAUTY Study*)
Window Trial of Abemaciclib for Surgically Resectable, Chemotherapy-Resistant, Triple Negative Breast Cancer (a BEAUTY Study*)
Enrollment Status: Terminated
Publish Date: November 12, 2025
Intervention Type: Procedure, Drug
Study Drug: Abemaciclib
Study Phase: Phase 2
Randomized Phase 2 Study of Neoadjuvant Chemotherapy, Carboplatin and Paclitaxel, With or Without Atezolizumab in Triple Negative Breast Cancer (TNBC)
Randomized Phase 2 Study of Neoadjuvant Chemotherapy, Carboplatin and Paclitaxel, With or Without Atezolizumab in Triple Negative Breast Cancer (TNBC)
Enrollment Status: Active_not_recruiting
Publish Date: October 16, 2025
Intervention Type: Procedure, Drug
Study Drugs: carboplatin, paclitaxel, atezolizumab
Study Phase: Phase 2
A Phase 1/2 Trial of ABT-888, an Inhibitor of Poly(ADP-ribose) Polymerase (PARP), and Topotecan (TPT) in Patients With Solid Tumors (Phase 1) and Relapsed Ovarian Cancer or Primary Peritoneal Cancer (Phase 2) After Prior Platinum Containing First-Line Chemotherapy
A Phase 1/2 Trial of ABT-888, an Inhibitor of Poly(ADP-ribose) Polymerase (PARP), and Topotecan (TPT) in Patients With Solid Tumors (Phase 1) and Relapsed Ovarian Cancer or Primary Peritoneal Cancer (Phase 2) After Prior Platinum Containing First-Line Chemotherapy
Enrollment Status: Active_not_recruiting
Publish Date: September 15, 2025
Intervention Type: Other, Drug
Study Drugs: Topotecan Hydrochloride, Veliparib
Study Phase: Phase 1/Phase 2
Phase II Trial to Evaluate the Efficacy of the FASN Inhibitor, TVB-2640, in Combination With Trastuzumab Plus Paclitaxel or Endocrine Therapy in Patients With HER2+ Metastatic Breast Cancer Resistant to Trastuzumab-Based Therapy
Phase II Trial to Evaluate the Efficacy of the FASN Inhibitor, TVB-2640, in Combination With Trastuzumab Plus Paclitaxel or Endocrine Therapy in Patients With HER2+ Metastatic Breast Cancer Resistant to Trastuzumab-Based Therapy
Enrollment Status: Active_not_recruiting
Publish Date: July 16, 2025
Intervention Type: Procedure, Drug, Biological
Study Drugs: FASN Inhibitor TVB-2640, Paclitaxel, Trastuzumab
Study Phase: Phase 2
A Randomized, Open-Label, Phase 3 Study of Abemaciclib Combined With Standard Adjuvant Endocrine Therapy Versus Standard Adjuvant Endocrine Therapy Alone in Patients With High Risk, Node Positive, Early Stage, Hormone Receptor Positive, Human Epidermal Receptor 2 Negative, Breast Cancer
A Randomized, Open-Label, Phase 3 Study of Abemaciclib Combined With Standard Adjuvant Endocrine Therapy Versus Standard Adjuvant Endocrine Therapy Alone in Patients With High Risk, Node Positive, Early Stage, Hormone Receptor Positive, Human Epidermal Receptor 2 Negative, Breast Cancer
Enrollment Status: Active_not_recruiting
Publish Date: April 20, 2025
Intervention Type: Drug
Study Drugs: Abemaciclib, Standard Adjuvant Endocrine Therapy
Study Phase: Phase 3
Prospective Study to Evaluate the Role of Tumor Sequencing in Women Receiving Palbociclib for Advanced Hormone Receptor (HR)-Positive, Breast Cancer (PROMISE)
Prospective Study to Evaluate the Role of Tumor Sequencing in Women Receiving Palbociclib for Advanced Hormone Receptor (HR)-Positive, Breast Cancer (PROMISE)
Enrollment Status: Active_not_recruiting
Publish Date: March 06, 2025
Intervention Type: Procedure, Other
A Phase III Randomized Double-blind, Placebo Controlled Study of Alpelisib in Combination With Fulvestrant for Men and Postmenopausal Women With Hormone Receptor Positive, HER2-negative Advanced Breast Cancer Which Progressed on or After Aromatase Inhibitor Treatment
A Phase III Randomized Double-blind, Placebo Controlled Study of Alpelisib in Combination With Fulvestrant for Men and Postmenopausal Women With Hormone Receptor Positive, HER2-negative Advanced Breast Cancer Which Progressed on or After Aromatase Inhibitor Treatment
Enrollment Status: Completed
Publish Date: February 13, 2025
Intervention Type: Drug
Study Drugs: Fulvestrant, Alpelisib
Study Phase: Phase 3
A Phase I/II Dose Escalation and Expansion Study to Investigate the Safety, Pharmacokinetics, Pharmacodynamics and Clinical Activity of GSK525762 in Combination With Fulvestrant in Subjects With Hormone Receptor-positive/HER2-negative (HR+/HER2-) Advanced or Metastatic Breast Cancer
A Phase I/II Dose Escalation and Expansion Study to Investigate the Safety, Pharmacokinetics, Pharmacodynamics and Clinical Activity of GSK525762 in Combination With Fulvestrant in Subjects With Hormone Receptor-positive/HER2-negative (HR+/HER2-) Advanced or Metastatic Breast Cancer
Enrollment Status: Terminated
Publish Date: August 29, 2024
Intervention Type: Drug
Study Drugs: GSK525762, Fulvestrant
Study Phase: Phase 1
A Randomized Phase III Trial of Eribulin Compared to Standard Weekly Paclitaxel as First- or Second-Line Therapy for Locally Recurrent or Metastatic Breast Cancer
A Randomized Phase III Trial of Eribulin Compared to Standard Weekly Paclitaxel as First- or Second-Line Therapy for Locally Recurrent or Metastatic Breast Cancer
Enrollment Status: Suspended
Publish Date: August 20, 2024
Intervention Type: Other, Drug
Study Phase: Phase 3
A Phase 1, Open-Label, Dose-Escalation Study Evaluating the Safety, Pharmacokinetics, and Clinical Effects of Intravenously Administered PT-112 Injection in Subjects With Advanced Solid Tumors and Subsequent Dose Expansion Cohorts
A Phase 1, Open-Label, Dose-Escalation Study Evaluating the Safety, Pharmacokinetics, and Clinical Effects of Intravenously Administered PT-112 Injection in Subjects With Advanced Solid Tumors and Subsequent Dose Expansion Cohorts
Enrollment Status: Active_not_recruiting
Publish Date: April 05, 2024
Intervention Type: Drug
Study Drug: PT-112
Study Phase: Phase 2
A Phase 1 Study of PD-1 Inhibition With Pembrolizumab Combined With JAK2 Inhibition in Triple Negative Breast Cancer
A Phase 1 Study of PD-1 Inhibition With Pembrolizumab Combined With JAK2 Inhibition in Triple Negative Breast Cancer
Enrollment Status: Completed
Publish Date: January 31, 2024
Intervention Type: Drug, Other, Biological
Study Drugs: Pembrolizumab, Ruxolitinib Phosphate
Study Phase: Phase 1
Phase II Trial to Evaluate Immune-Related Biomarkers for Pathological Response in Stage II-III HER2-Positive Breast Cancer Receiving Neoadjuvant Chemotherapy With Subsequent Randomization to Multi-Epitope HER2 Vaccine vs. Placebo in Patients With Residual Disease Post-Neoadjuvant Chemotherapy
Phase II Trial to Evaluate Immune-Related Biomarkers for Pathological Response in Stage II-III HER2-Positive Breast Cancer Receiving Neoadjuvant Chemotherapy With Subsequent Randomization to Multi-Epitope HER2 Vaccine vs. Placebo in Patients With Residual Disease Post-Neoadjuvant Chemotherapy
Enrollment Status: Unknown
Publish Date: December 18, 2023
Intervention Type: Biological, Other
Study Drugs: Pertuzumab, Sargramostim, Trastuzumab, Trastuzumab Emtansine, Vaccine Therapy
Study Phase: Phase 2
Double Blind, Parallel Groups, Controlled, Randomized Phase II Trial to Evaluate Vaccination With Folate Receptor Alpha Peptide Vaccine With GM-CSF as Vaccine Adjuvant Following Oral Cyclophosphamide Versus GM-CSF/Placebo to Prevent Recurrence in Patients With Triple Negative Breast Cancer
Double Blind, Parallel Groups, Controlled, Randomized Phase II Trial to Evaluate Vaccination With Folate Receptor Alpha Peptide Vaccine With GM-CSF as Vaccine Adjuvant Following Oral Cyclophosphamide Versus GM-CSF/Placebo to Prevent Recurrence in Patients With Triple Negative Breast Cancer
Enrollment Status: Active_not_recruiting
Publish Date: January 13, 2023
Intervention Type: Drug, Other, Biological
Study Drugs: Cyclophosphamide, Multi-epitope Folate Receptor Alpha Peptide Vaccine, Sargramostim
Study Phase: Phase 2
An International, Multi-Center, Open-Label, Randomized, Phase III Trial of Sacituzumab Govitecan Versus Treatment of Physician Choice in Patients With Metastatic Triple-Negative Breast Cancer Who Received at Least Two Prior Treatments
An International, Multi-Center, Open-Label, Randomized, Phase III Trial of Sacituzumab Govitecan Versus Treatment of Physician Choice in Patients With Metastatic Triple-Negative Breast Cancer Who Received at Least Two Prior Treatments
Enrollment Status: Completed
Publish Date: June 15, 2022
Intervention Type: Drug
Study Phase: Phase 3
Phase II Trial of Abemaciclib and T-DM1 in Women and Men With HER2-positive Advanced or Metastatic Breast Cancer Who Progressed on Treatment With a Taxane, Trastuzumab and Pertuzumab
Phase II Trial of Abemaciclib and T-DM1 in Women and Men With HER2-positive Advanced or Metastatic Breast Cancer Who Progressed on Treatment With a Taxane, Trastuzumab and Pertuzumab
Enrollment Status: Withdrawn
Publish Date: May 26, 2022
Intervention Type: Drug, Biological
Study Drugs: Abemaciclib, Trastuzumab Emtansine
Study Phase: Phase 2
A Phase II Neoadjuvant Study of Palbociclib in Combination With Letrozole and Trastuzumab as Neoadjuvant Treatment of Stage II-III ER+ HER2+ Breast Cancer (PALTAN)
A Phase II Neoadjuvant Study of Palbociclib in Combination With Letrozole and Trastuzumab as Neoadjuvant Treatment of Stage II-III ER+ HER2+ Breast Cancer (PALTAN)
Enrollment Status: Terminated
Publish Date: September 29, 2021
Intervention Type: Procedure, Drug, Genetic, Biological
Study Phase: Phase 2
A Phase 1b Study of Aurora A Kinase Inhibitor LY3295668 Erbumine in Monotherapy and Combination Therapy in Patients With Metastatic Breast Cancer Post CDK4/6 Inhibitor and Endocrine Therapy
A Phase 1b Study of Aurora A Kinase Inhibitor LY3295668 Erbumine in Monotherapy and Combination Therapy in Patients With Metastatic Breast Cancer Post CDK4/6 Inhibitor and Endocrine Therapy
Enrollment Status: Completed
Publish Date: June 01, 2020
Intervention Type: Drug
Study Phase: Phase 1
Pilot Study of Effects of Tai Chi Easy on Cancer Survivors Experiencing Neuropathy
Pilot Study of Effects of Tai Chi Easy on Cancer Survivors Experiencing Neuropathy
Enrollment Status: Withdrawn
Publish Date: March 12, 2018
Intervention Type: Behavioral, Other
Study Phase: Not Applicable
View 20 Less Clinical Trials

115 Total Publications

Erratum: Prospective Study of Supplemental Screening With Contrast-Enhanced Mammography in Women With Elevated Risk of Breast Cancer: Results of the Prevalence Round.
Erratum: Prospective Study of Supplemental Screening With Contrast-Enhanced Mammography in Women With Elevated Risk of Breast Cancer: Results of the Prevalence Round.
Journal: Journal of clinical oncology : official journal of the American Society of Clinical Oncology
Published: September 02, 2025
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Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

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