Alexander T. Limkakeng, MD, MHSc
Emergency Medicine Specialist
I am an emergency medicine physician because I love to help people. Emergency medicine is the one specialty that is not defined by an organ system but rather by a dimension – time. We also serve as a community health care resource. We provide care around the clock and for all conditions. The emergency department is, in many ways, the interface between the health care system and the outside world, and it is the only point of health care access for some. I like the acute problem-solving aspect of this job, the fact that I use everything I learned in medical school (and then some), the variety of people I get to meet, and the great team of people with whom I work. I also appreciate being able to help people when they are acutely ill and trying to find new ways to help others through education and research.
Training and Education
Clinical Focus and Research
As director of acute care research for the Duke Division of Emergency Medicine, I study a wide variety of conditions. The common theme is that they all have a time-sensitive component. in other words, something has to be done within a certain amount of time. We work with researchers from all over Duke to do this. For example, we recently participated in a large trial that showed that a less invasive way of caring for patients with severe infections was effective. We are also working together with infectious disease doctors to learn better ways to identify serious infections. We are working with other Duke specialists to study new treatments for stroke and heart failure. We are also working with surgeons to better understand how to help people who are seriously injured or ill from trauma. My personal interest is finding new ways to identify people who are having a heart attack, or are at risk for them in the future. In particular, I am interested in using blood tests to learn more about what happens to the heart when it doesn't get enough blood flow.
Duke Health contracts with most major health insurance carriers and transplant networks, including the ones listed below.
- Aetna Choice POS, Aetna Choice POS II
- Aetna Elect Choice HMO, Aetna Open Access Elect Choice
- Aetna Health Network Only, Aetna Health Network Option
- Aetna HMO
- Aetna Limited Benefit Insurance PPO
- Aetna Managed Choice POS
- Aetna Medicare HMO Open Access
- Aetna Medicare Plan (HMO, PPO)
- Aetna Medicare Premier Plan (PPO)
- Aetna Medicare Prime Plan (HMO, PPO)
- Aetna Open Access HMO, Open Access Aetna Select, Aetna Open Access Managed Choice
- Aetna Open Choice PPO
- Aetna PCP Coordinated POS Plan
- Aetna Quality Point of Service (QPOS)
- Aetna Select HMO
- Aetna Traditional Choice
- Aetna Voluntary Indemnity Group Plan
- Aetna Whole Health – Duke WakeMed WKCC
- Ambetter of North Carolina
Blue Cross Blue Shield of NC
- Blue Advantage
- Blue Medicare (HMO, PPO)*
- Blue Options (123, PPO, HSA)
- Blue Select
- NC State Employees Health Plan
*Duke HomeCare and Hospice does not participate in the plan.
- Cigna Choice Plus
- Cigna Behavioral Health (*Limited eligibility)
- Cigna Open Access
- Cigna Open Access Plus
*Please call Cigna Behavioral Heath to see if the provider is participating in your plan.
Duke Group Plans
- Duke Basic
- Duke Select
- Experience Health Medicare Advantage (HMO) Plan
- First Health
- Gateway Health Alliance
Gateway Health Plan
- Gateway Health Medicare Assured Prime (HMO)
- Gateway Health Medicare Assured Select (HMO)
- Halifax Physician-Hospital Organization
- Humana Choice (PPO)
- Humana ChoiceCare (PPO)
- Humana Gold Choice (PFFS)
- Humana Gold Plus (HMO)
- First Medicare Direct*
- Medicare Part A
- Medicare Part B
*This is for Wake County only.
- MultiPlan / Private Healthcare Systems
- NC Medicaid*
*Not all Duke locations and doctors participate in this plan. Please contact the location you will be visiting to determine what is accepted.
- OneNet PPO
- Optima Family Care (Medicaid HMO in VA)*
- Optima Individual & Family (On & Off Exchange Plans)
- Optima Plus (PPO)
- Optima Vantage (HMO)
*Duke Primary Care, Duke University Hospital, Duke Regional Hospital, and Duke Raleigh Hospital are not participating with this plan.
- TRICARE Prime*
- TRICARE Prime Remote*
- TRICARE Select*
*Duke Primary Care is considered an authorized, non-network participating provider.
- AARP Medicare Complete (HMO, PPO)*
- AARP Medicare Complete Essential (HMO)*
- All Savers Alternate Funding
- All Savers Fully Insured
- State Employee Health Plan (for retirees)
- United Healthcare (HMO, PPO, POS)
- United Healthcare Charter/Charter Balance/Charter Plus
- United Healthcare Choice/Choice Plus
- United Healthcare Core/Core Essential
- United Healthcare Navigate/Navigate Plus/Navigate Balanced
- United Healthcare of the River Valley
- United Healthcare Option PPO
- United Healthcare Options PPO with Harvard Pilgrim
- United Healthcare Passport Connect Choice/Choice Plus
- United Healthcare Passport Connect Options PPO
- United Healthcare Select/Select Plus
- United Medical Resources (UMR)
*Duke HomeCare and Hospice does not participate with the plan.
Before scheduling your appointment, we strongly recommend you contact your insurance company to verify that the Duke Health location or provider you plan to visit is included in your network. Your insurance company will also be able to inform you of any co-payments, co–insurances, or deductibles that will be your responsibility. If you proceed in scheduling an appointment and your health insurance benefits do not participate with Duke, your out of pocket liability may be higher. We will contact you regarding your coverage and patient liability. If you are uninsured, learn more about our financial assistance policy.
- American College of Emergency Physicians
- Creavo Medical Technologies
- Farrell, White, and Legg, PLLC