Expertise in
7
conditions

Dr. Shiela H. Haffar

Oncology
Texas Oncology, P.A.
1005 W. Ralph Hall Parkway, Suite 211, 
Rockwall, TX 
Accepting New Patients
Offers Telehealth
Referral may be required
Before you request
Expertise in
7
conditions
Texas Oncology, P.A.
1005 W. Ralph Hall Parkway, Suite 211, 
Rockwall, TX 

Overview

Shiela Haffar is an Oncologist practicing medicine in Rockwall, Texas.

Dr. Haffar is highly rated in 7 conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Paget Disease of the Breast, Saddle Pulmonary Embolism, and Venous Thromboembolism (VTE).

Dr. Haffar is board certified in Medical Oncology- American Board Of Internal Medicine and Medical Oncology- American Board Of Internal Med/Medical Oncology. She is actively involved in clinical research, participating in 5 clinical trials. Dr. Haffar is currently accepting new patients.

Specialties

Oncology

Licenses

Emergency Medicine in TX

Board Certifications

Medical Oncology- American Board Of Internal Medicine
Medical Oncology- American Board Of Internal Med/Medical Oncology

Fellowships

Hematology/Oncology, UT Southwestern Medical Center - 2007
UT Southwestern Medical Center - 2007

Hospital Affiliations

Texas Health Presbyterian Hospital Rockwall
Hunt Regional Medical Center
Baylor Scott And White Medical Center Lake Pointe

Languages Spoken

English

Gender

Female

Insurance

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

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
Baylor Scott & White Health
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • OTHER COMMERCIAL
Blue Shield of California
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
CareFirst
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Friday Health

Accepted plan types not found. Please verify directly with the provider.

Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Medicare
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE PART D
Oscar
  • EPO
  • HMO
  • PPO
Scott and White Health
  • HMO
  • POS
Superior Health Plan
  • MANAGED MEDICAID PLAN
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
TeamCare
  • OTHER COMMERCIAL
Trustmark
  • PPO
Tufts
  • HMO
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 15 Less Insurance Carriers -

Locations

Texas Oncology, P.A.
1005 W. Ralph Hall Parkway, Suite 211, Rockwall, TX 75032

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.

5 Clinical Trials

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 24, 2026
Intervention Type: Drug
Study Drugs: Abemaciclib, Standard Adjuvant Endocrine Therapy
Study Phase: Phase 3
postMONARCH: A Randomized, Double Blind, Placebo-Controlled, Phase 3 Study to Compare the Efficacy of Abemaciclib Plus Fulvestrant to Placebo Plus Fulvestrant in Participants With HR+, HER2-, Advanced or Metastatic Breast Cancer Following Progression on a CDK4 & 6 Inhibitor and Endocrine Therapy
postMONARCH: A Randomized, Double Blind, Placebo-Controlled, Phase 3 Study to Compare the Efficacy of Abemaciclib Plus Fulvestrant to Placebo Plus Fulvestrant in Participants With HR+, HER2-, Advanced or Metastatic Breast Cancer Following Progression on a CDK4 & 6 Inhibitor and Endocrine Therapy
Enrollment Status: Active_not_recruiting
Publish Date: January 16, 2026
Intervention Type: Drug
Study Drugs: Abemaciclib, Fulvestrant
Study Phase: Phase 3
Elacestrant Monotherapy vs. Standard of Care for the Treatment of Patients With ER+/HER2- Advanced Breast Cancer Following CDK4/6 Inhibitor Therapy: A Phase 3 Randomized, Open-label, Active-controlled, Multicenter Trial
Elacestrant Monotherapy vs. Standard of Care for the Treatment of Patients With ER+/HER2- Advanced Breast Cancer Following CDK4/6 Inhibitor Therapy: A Phase 3 Randomized, Open-label, Active-controlled, Multicenter Trial
Enrollment Status: Completed
Publish Date: September 15, 2025
Intervention Type: Drug
Study Drugs: Elacestrant, Standard of Care
Study Phase: Phase 3
The Circulating Cell-free Genome Atlas Study
The Circulating Cell-free Genome Atlas Study
Enrollment Status: Unknown
Publish Date: September 13, 2023
A Single-Arm, Global, Phase 4 Study of Abemaciclib, a CDK 4 & 6 Inhibitor, in Combination With Nonsteroidal Aromatase Inhibitors (Anastrozole or Letrozole) in Participants With Hormone Receptor Positive, Human Epidermal Growth Factor Receptor 2 Negative Advanced Breast Cancer With Poor Prognostic Factors
A Single-Arm, Global, Phase 4 Study of Abemaciclib, a CDK 4 & 6 Inhibitor, in Combination With Nonsteroidal Aromatase Inhibitors (Anastrozole or Letrozole) in Participants With Hormone Receptor Positive, Human Epidermal Growth Factor Receptor 2 Negative Advanced Breast Cancer With Poor Prognostic Factors
Enrollment Status: Withdrawn
Publish Date: September 06, 2019
Intervention Type: Drug
Study Phase: Phase 4
View 4 Less Clinical Trials
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Before you request

Texas Oncology, P.A.

3410 Worth Street, Suite 400, 
Dallas, TX 
 (19.2 miles away)
214-370-1000
Experience:
44+ years
Languages Spoken:
English, Spanish
See accepted insurances
Accepting New Patients
Offers Telehealth

Dr. O'Shaughnessy is a Medical Oncologist that focuses on breast cancer prevention and treatment. She founded The School of Breast Oncology, a program providing a curriculum-based program focused exclusively on breast cancer clinical management. Dr. O'Shaughnessy attended medical school at Yale University School of Medicine in New Haven, CT. She then completed her Internal Medicine residency at Massachusetts General Hospital in Boston, MA and a Medical Oncology fellowship at National Cancer Institute in Bethesda, MD. She is co-chair of Breast Cancer Research, chair of Breast Cancer Prevention Research at Baylor Charles A. Sammons Cancer Center and a member of the Scientific Advisory Board for US Oncology Research Network. Dr. O'shaughnessy is highly rated in 14 conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Triple-Negative Breast Cancer, PIK3CA-Related Overgrowth Spectrum, Inflammatory Breast Cancer, and Tissue Biopsy. Dr. O'shaughnessy is board certified in Medical Oncology- American Board Of Internal Medicine, Medical Oncology- American Board Of Internal Med/Medical Oncology, Internal Medicine- American Board Of Internal Med, and Internal Medicine- American Board Of Internal Medicine. Dr. O'shaughnessy is currently accepting new patients.

Expertise in
10
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Expertise in
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conditions
Referral may be required

Office

2201 Inwood Rd, 
Dallas, TX 
 (22.1 miles away)
214-645-4673
Languages Spoken:
English
See accepted insurances
Offers Telehealth

Hans Hammers is an Oncologist practicing medicine in Dallas, Texas. Dr. Hammers is highly rated in 10 conditions, according to our data. His clinical expertise encompasses Renal Cell Carcinoma (RCC), Chromophobe Renal Cell Carcinoma, Wilms Tumor, Nephrectomy, and Thrombectomy.

Frequently Asked Questions about Dr. Shiela H. Haffar

How do I make an appointment with Dr. Shiela H. Haffar?

You can book an appointment with Dr. Shiela H. Haffar by calling their office at 972-771-3322. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. Shiela H. Haffar a top-rated expert for Breast Cancer?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. Shiela H. Haffar is classified as an Distinguished expert for Breast Cancer, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. Shiela H. Haffar specialize in?

While Dr. Shiela H. Haffar is a Oncology, they have specific expertise in Breast Cancer, Paget Disease of the Breast, and Saddle Pulmonary Embolism. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Oncology.

Does Dr. Shiela H. Haffar accept my insurance?

Dr. Shiela H. Haffar accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 972-771-3322 to verify that your specific plan is currently accepted before your visit.

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.

Learn more about MediFind’s expert tiers

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