Seamus D. Lonergan
4835 LBJ Freeway, Suite 900, 
Dallas, TX 

Overview

Dr. Seamus Lonergan attended the University of California San Francisco Medical School in California. He later completed an Emergency Medicine Residency at Alameda County Medical Center/Highland General Hospital, where he also served as Chief Resident. He worked in California for six years at Santa Clara Valley Medical Center as a physician and ED quality improvement director before moving back home to Dallas. Dr. Lonergan began his tenure with Integrative Emergency Services as the Assistant Medical Director for the Emergency Department at BSWH - Grapevine for three years, while also working at Baylor University Medical Center. In 2015, Dr. Lonergan was named as the Medical Director at BSWH - Irving, serving in that role for four years. During that time, he garnered tremendous experience in improving emergency department operations through focused quality improvements efforts. Dr. Lonergan has successfully championed efforts impacting quality, safety, patient experience, and physician engagement at both a local and system level. He is currently serving as the Emergency Department Medical Director for Baylor University Medical Center, where he continues to pursue his passion for public health, continuous quality improvement, operational efficiency, and team work.

His clinical expertise encompasses Inappropriate Sinus Tachycardia (IST), Muscle Spasms, Aseptic and Alopecic Nodules of Scalp (AANS), and Cannabinoid Hyperemesis Syndrome (CHS).

Dr. Lonergan is board certified in Emergency Medicine- American Board Of Emergency Medicine. He is actively involved in clinical research, co-authoring 1 peer reviewed article.

Graduate Institution

University Of California San Francisco - 2003|University Of California San Francisco School Of Medicine - 2003|Alameda County Medical Center - 2004

Residency

Emergency Medicine, Alameda County Medical Center - 2007

Specialties

Emergency Medicine

Licenses

Emergency Medicine in CA

Board Certifications

Emergency Medicine- American Board Of Emergency Medicine

Hospital Affiliations

Baylor Scott & White Medical Center - Irving
Baylor Scott & White Medical Center - Grapevine
Baylor University Medical Center, Part Of Baylor Scott & White Health
Baylor Scott & White Medical Center - Frisco At PGA Parkway

Languages Spoken

English

Gender

Male

Insurance

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

Find your insurance
Find your insuranceClose

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 Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
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
Cook Children's Health Plan
  • MANAGED MEDICAID PLAN
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
Independent Health
  • EPO
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medica
  • EPO
  • HMO
  • PPO
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
Premera Blue Cross
  • INSURANCE PLAN
  • MEDICARE MAPD
  • OTHER COMMERCIAL
  • PPO
Scott and White Health
  • HMO
  • POS
Spectrum Priority Health
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
Superior Health Plan
  • MANAGED MEDICAID PLAN
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
TeamCare
  • OTHER COMMERCIAL
Trustmark
  • PPO
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
View 20 Less Insurance Carriers -

Locations

Beacon Emergency Services Team, PA
4835 LBJ Freeway, Suite 900, Dallas, TX 75244
Other Locations
Baylor Scott & White Medical Center - Irving
1901 N MacArthur Blvd, Irving, TX 75061
Baylor Scott & White Medical Center - Grapevine
1650 W College St, Grapevine, TX 76051
Baylor University Medical Center, part of Baylor Scott & White Health
3500 Gaston Ave, Dallas, TX 75246
Baylor Scott & White Medical Center - Frisco at PGA Parkway
7600 Better Way, Frisco, TX 75033

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.


1 Total Publications

Murine typhus.
Similar Doctors
Expertise in
4
conditions
Emergency Medicine
Expertise in
4
conditions
Emergency Medicine

Texas Phlebology PA

6149 Windhaven Pkwy Ste 130, 
Plano, TX 
 (1475.1 miles away)
Languages Spoken:
English
Offers Telehealth

Satish Vayuvegula is an Emergency Medicine provider practicing medicine in Plano, Texas. Dr. Vayuvegula is highly rated in 4 conditions, according to our data. His clinical expertise encompasses Varicose Veins, Venous Insufficiency, Superficial Thrombophlebitis, and Thrombophlebitis.

Expertise in
1
conditions
Emergency Medicine
Expertise in
1
conditions
Emergency Medicine

Teladoc PA

1945 Lakepointe Dr, 
Lewisville, TX 
 (1466.7 miles away)
Languages Spoken:
English
Offers Telehealth

Miles Hartsfield is an Emergency Medicine provider practicing medicine in Lewisville, Texas. Dr. Hartsfield is highly rated in 1 condition, according to our data. His clinical expertise encompasses End-Stage Renal Disease (ESRD).

Expertise in
2
conditions
Emergency Medicine
Expertise in
2
conditions
Emergency Medicine

Medical City Decatur A Campus Of Medical

609 Medical Center Dr, 
Decatur, TX 
 (1428.2 miles away)
Languages Spoken:
English

Phillip Chapa is an Emergency Medicine provider practicing medicine in Decatur, Texas. Dr. Chapa is highly rated in 2 conditions, according to our data. His clinical expertise encompasses End-Stage Renal Disease (ESRD) and ALK-Positive Non-Small Cell Lung Cancer.

Frequently Asked Questions about Dr. Seamus D. Lonergan

How do I make an appointment with Dr. Seamus D. Lonergan?

You can book an appointment with Dr. Seamus D. Lonergan by calling their office at 469-420-5525. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. Seamus D. Lonergan a top-rated expert for Inappropriate Sinus Tachycardia (IST)?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. Seamus D. Lonergan is classified as an Experienced expert for Inappropriate Sinus Tachycardia (IST), 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. Seamus D. Lonergan specialize in?

While Dr. Seamus D. Lonergan is a Emergency Medicine, they have specific expertise in Inappropriate Sinus Tachycardia (IST), Muscle Spasms, and Aseptic and Alopecic Nodules of Scalp (AANS). MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Emergency Medicine.

Does Dr. Seamus D. Lonergan participate in research or clinical trials?

Yes. Dr. Seamus D. Lonergan has published 1 articles and abstracts on conditions like Inappropriate Sinus Tachycardia (IST). You can view a list of Dr. Seamus D. Lonergan's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Does Dr. Seamus D. Lonergan accept my insurance?

Dr. Seamus D. Lonergan accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 469-420-5525 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

Find Dr. Lonergan's expertise for a condition
ConditionClose
        View All 7 Experienced Conditions
        Want to save this doctor for later?
        Sign Up
        Is this your doctor?
        Find A Second Opinion
        Not sure about your diagnosis?
        Check Your Symptoms
         
         
         
         
        Learn about our expert tiers
        Learn More
        Are you the provider on this profile?
        Claim Profile