Accepting new patients!



AEHS is here to serve your Primary Care, Urgent Care, and Cardiology needs.

Weight Management Clinic

AEHS weight management clinic provides a multi-disciplinary approach to weight management and weight loss for our patients.  The program brings together diet, exercise, FDA approved medical therapies and AI technology to ensure weight loss and the maintenance of weight loss.  Our weight loss program is tailored to the patient's medical conditions and we take an active role in monitoring our patients for any potential drug & diet adverse side effects. 
Call (703) 658-7060 to schedule an appointment today.


Family Medicine for the family

At American Executive Health System, you'll find that all your primary care needs are met with attention and care by our team of Board Certified physicians and physician assistants.

Our focus is on prevention of diseases and  on chronic disease management.

New patients accepted  

We are proud with the following recognitions:

Aetna Aexcel

Carefirst (PCMH Plus)

Cigna Care Network Tier 1 Provider

 United Healthcare Premium

United Healthcare Hero for Medicare Advantage


Walk-In & Additional Services

We treat acute medical problems that are not serious enough to require a trip to the emergency room.



Physical exam

Preoperative exam
Employment physical (not covered by ins)

Work physical*
School physical*

Sports physical*

TB & STD testing

COVID-19 testing
   Our urgent care visits are billed as primary care visits
*Not covered by insurance  


Heart and vascular disease management

Care and Management of all types of heart disease for adults patients.

Preoperative evaluation

Advanced hypertension management

Atrial fibrillation diagnosis & management 

Coronary artery disease management

Peripheral artery

disease (PAD) evaluation



American Executive Health System - Home


Did You Know?...

Because we are credentialed as Primary Care Providers, we bill your urgent care visit as a primary care visit, which in many cases might result in a lower co-pay.  

Please check with your insurance for details. 


Mon-Fri:   8:00 AM - 6:00 PM 

Sat-Sun:   8:00 AM - 4:00 PM

  • No appointment necessary
  • Walk-in is welcome
  • Accepting new patients 7 days a week
  • Physical exam & primary care services available 7 days a week
  • Our urgent care visits are billed as primary care visits
  • Last walk-in accepted 15 mins before closing

Annandale Primary Care & Urgent Care

Annandale Little River Shopping Center 

7432 Little River Turnpike
Annandale, VA 22003


Wed & Fri:   8 AM - 4 PM
Please use Annandale clinic or request for same day telemedicine appointment when the office is closed.

Last walk-in accepted 15 minutes before closing  

Virtual visit is available at Pan Am | Fairfax


Pan Am Primary Care & Walk-in

Fairfax Pan Am Shopping Center 

3085 Nutley Street

Fairfax, VA 22031


NEWS:  We are now members of Privia Medical Group

As of May 25, 2021 we are proud members of Privia Medical Group!

American Executive Health System is a proud member of Privia Medical Group. The best doctors in our community have joined together to form Privia Medical Group (PMG), a multi-specialty, high-performance medical group that puts patients first. Our physicians are united by the mission of providing better, more coordinated care for their patients.

To learn more about Privia Medical Group and find other Privia doctors, please visit our website.


Access your personal health information and test results, securely message your care team, and manage payments, all from one spot and at your convenience, 24/7.

  • See your provider's openings and schedule appointments.
  • Review prescription medications and request renewals.
  • View payment history and pay current invoices.


Our health care group can provide your corporation with employment physicals, work place injury evaluation and treatment, travel immunization recommendation, specialist referrals and employment physical exams. We are in-network with most insurances and health plans.

We look forward to being a valuable resource for your organization!

For Corporate Services Inquiries, please contact the

practice manager at (703) 658-7060

Our Services

  • Employment physical exam

  • General medical exam

  • TB testing 

  • COVID-19 testing

  • On-site ultrasounds

Benefits We Offer

  • Flexible monthly invoicing

  • Detailed report of services         performed

  • Detailed charges for ease

      of accounting

  • Open Access: Your staff can

      be seen within the same or 

      next business day, 7-days a

      week, minimizing lost


  • Corporate contract cost


  • Telemedicine service 

Why Choose AEHS?

  • Modern, well equipped, 

      well-lit location and 


  • Electronic medical records 

      (EMR) with drug interaction 

      checker and electronic


  • 2 convenient office 

      locations in Fairfax and


  • Established since 2005


Van-Anh Nguyen, MD

Dr. Van-Anh Nguyen is a native of Vienna, Virginia and attended James Madison High School where she graduated as class salutatorian. Dr. Nguyen attended George Mason University on full scholarship as a George Mason Scholar, graduating with a B.S. in Biology. She received her Doctorate in Medicine from the Virginia Commonwealth University School of Medicine in Richmond, VA, and completed her family practice residency at the University of Maryland's Family Medicine Program in Baltimore, MD.

Prior to joining American Executive Health System in 2008, Dr. Nguyen worked at NOVA Medical and Urgent Care Center in Ashburn, VA. She is a member of the American Academy of Family Medicine and the American Medical Association. Dr. Nguyen is board certified in Family Medicine. Dr. Nguyen has been nominated as a "Rising Star Physician" in the May 2013 edition of the Washington Post Magazine.

Dr. Nguyen enjoys building long-term relationships with her patients. Her goal is to provide quality, comprehensive, and compassionate medical care. She believes in patient education, preventative care, and in-depth evaluation and treatment. Dr. Nguyen strives to actively involve her patients in their medical care and decision-making process to promote improved quality of life, health, and wellness. Dr. Nguyen looks forward to caring for you and your family.

Roger Ewonkem, MD

Dr. Roger Ewonkem is a United States combat veteran and a naturalized citizen born in Cameroon. He obtained his Doctorate in Medicine from the University of Pavia school of medicine Italy and completed his Family Medicine residency at the University of Stony Brook Family medicine program in Long Island New York.

Prior to joining American Executive Health System, Dr. Ewonkem worked at Delaware Valley Hospital New York. He then joined the US Air Force where he served military service members and their families at home and abroad.

He is board certified in family medicine. He is a member of the American Academy of family medicine and the Uniform Services Academy of Family Physicians. Dr. Ewonkem was awarded the US Army Achievement Medal for Heroism with Mass Casualty Intervention in 2010. He also received the Lloyd Cutler Award for Excellence in Family Medicine in June 2004.

Dr. Ewonkem is fluent in Italian, French and Mbo. He looks forward to continuing his compassionate and comprehensive medical care in the community.

Thien M. Do, MD, FACC

Dr. Thien Do attended medical school at the George Washington University School of Medicine in Washington, DC and completed his internal medicine residency at William Beaumont Army Medical Center in Texas. He completed his cardiology fellowship with the U.S. Army at Brooke Army Medical Center in San Antonio, Texas and went on to serve as a staff cardiologist at Walter Reed Army Medical Center in Washington, DC and at Malcolm Grow Hospital with Andrews Air Force Base with the rank of Major.

While at Malcolm Grow Hospital, he served as the director of the Coronary Care Unit, the Intermediate Care Unit, Pacemaker Implantation Service and as the director of the Non-invasive Lab. He also served as an assistant teaching professor at the Uniformed Services University of the Health Sciences as well as medical consultant for the NASA Mishaps Investigation Board. He holds a fellow status at the American College of Cardiology (FACC), and is an active staff member at the INOVA Fairfax Hospital.

Dr. Do also serves as director of the World Health Ambassador program which sends medical and dental teams abroad to treat residents in underserved countries.

Employment Opportunities

American Executive Health System provides a unique and exciting work environment where healthcare professionals can practice their skills with excellence. By placing the needs of the patient first, we aim to provide the highest quality of care. At American Executive Health System, you'll discover a culture of teamwork, professionalism and mutual respect. We support professional development, expansion of skills and opportunities for all our staff to reach the highest levels of personal potential and team success.  

Complete this form to let us know your interest in joining the American Executive Health System Team!  

About Privia Medical Group

Our practice is a proud member of Privia Medical Group - a physician-led, multi-speciality, national medical group. The nation’s top primary care physicians and specialists came together to form Privia Medical Group and share in the mission of providing better, more coordinated care to patients.

Our group focuses on taking accountability for the health and wellness of the patients we serve. We use some of the latest advances in medicine to help our patients remain healthy and better manage disease by offering our patients access to innovative health management technologies, proactive team-based care, and an evidenced-based, patient-centered approach.

Here’s what sets Privia Medical Group apart from traditional practices:

Top Doctors

  • Nationally recognized top physicians and healthcare professionals
  • Physician-led, high-performance medical group
  • Unhurried, comprehensive visits, with time to develop the right care plan
  • Personalized care that exceeds your expectations

Proactive Care

  • Collaborative, team-based medical group
  • Staffed with Health Coaches, Nurse Educators, Pharmacists, and Care Managers
  • Same-day/next-day appointments available
  • Care reminders and alerts
  • Check ins with clinical experts between your office visits

Convenient Technology

  • Book appointments and renew prescriptions online
  • Send and receive secure messages with your care team
  • Secure access to electronic medical records
  • Pay your invoices by credit card, securely and conveniently

Security and Privacy of Patient Information

We work diligently to ensure our patients’ information remains confidential and secure. Not only is our team trained in modern privacy standards (such as HIPAA and PCI compliance), but we also keep your information secure with Secure Socket Layer (SSL) data encryption, firewalls, secure servers (including 24/7 surveillance and biometric access), and many more measures to ensure your information won’t fall into the wrong hands.

To learn more about Privia Medical Group and find other Privia doctors, please visit our website.


Printable versions of our forms can be found at the links below. Please print, fill out and bring all needed forms with you to your next appointment.

Patient Forms

Authorization for Release of Medical Information (PDF) - Allows patients to authorize the disclosure of their health information to a designated individual, company, agency, or facility. Autorización De HIPAA Para Divulgar Información Del Paciente

Authorization and Consent for Treatment (PDF) - All patients must provide their consent for treatment, communications (calls, emails, and text messaging), and agreement of financial responsibility. Autorización y Consentimiento Para el Tratamiento

Preferred Contacts (PDF) - Patients are encouraged to complete and return the Preferred Contacts Form but it is not required. Contactos Preferidos

Virtual Visit Policy (PDF) - This policy describes the process for the documentation, maintenance, and transmission of information using virtual visit technology.

Office Policies

Financial Policy (PDF) - This form advises patients of their complete financial responsibility for all medical services received without regard to insurance eligibility or coverage determinations.

Notice of Privacy Practices (PDF) - Describes how health information about you (as a patient of this Care Center) may be used and disclosed, and how you can get access to your individually identifiable health information. Please review this notice carefully. Aviso de prácticas de privacidad (PDF)

HIPAA Privacy Notice


        Urgent care/Walk-in:
        First time consultation with AEHS                                                                            $135
        Follow up of initial consultation **                                                                             $59

Subsequent visits with AEHS for new problems                                                      $103

Glucose+cholesterol+basic chemistry lab panels                                               $40.00

Pregnancy test                                                                                                          $25.00

EKG                                                                                                                             $33.50
Nebulizer treatment                                                                                                 $27.50

Sport/Camp physical                                                                                                    $49

School physical                                                                                                              $69

*Blood tests, in-house tests & treatments listed are in addition to office consultation fee. 
Follow up of initial consultation must be within 2 weeks of the initial consultation to follow up on the medical problems under evaluation.

Frequently Asked Questions

1. Will you accept my insurance?

    For your convenience, we participate with the following plans:


    Aetna Aexcel Performance Network

    Aetna Innovation Health
    Alliance Amerigroup
    Blue Cross Blue Shield

    CareFirst BCBS
    Cigna Care Network

    Cigna Connect (for primary care & urgent care services)

    Cigna Tier 1 Provider Network




    NPN (National Provider Network)


    Sentara/Optima (commercial)

    Southern Health Network



    United Healthcare/MDIPA
    United Healthcare Premium Provider Network
    United Healthcare 2023 United Hero award for Medicare Advantage Plans


    Medicare Advantage Plans

    AARP MedicareComplete Plan 1 & 2

    Aetna Medicare Prime Plan

    Aetna Medicare Choice Plan

    Anthem MediBlue Plus

    Anthem MediBlue Dual Advantage

    Blue Cross Blue Shield



    Innovation Health Medicare Connection Plan

    Innovation Health Medicare Voyayer Plan (PPO)

    United Healthcare Dual Complete 

    United Healthcare DualComplete RP

    VA Premier Advantage Elite

    Medicaid  Plans


      For delivering quality and efficient medical services, our practice has been designated as preferred providers for the following networks: Carefirst PCMH, Innovation Health, Cigna Care Tier 1, United HealthCare Premium and Aetna Aexcel.

    For patients with HMO plans, please bring referrals from your primary care physicians.

    American Executive Health System is credentialed as a primary care facility with most insurance companies. If you are an HMO or Tricare Prime patient, your insurance company will require a referral and you will be billed for a primary care visit and NOT as an urgent care visit.  Your copay is sometime lower if billed for a primary care visit than an urgent care visit.  You are responsible for payment of any copay and/or balances at time of visit.  

    2. How much will it cost if I don't have insurance?

    If you are uninsured or have a high deductible plan, we offer affordable selfpay rate for walk-in/urgent care. Any additional in-house test will be additional cost. Please contact the office regarding self-pay rate to see our cardiologists.

    A $50 fee is charged for any returned and unpaid check.

    3. Appointment No-Shows and Cancellation

    In order to provide quality health care to our patients, our office policy is enforcing a 48-hour cancellation period.

    Charges incurred will be $50 for Primary and Urgent Care no-shows, and can be up to $300 for Cardiology Services.We ask that you notify our clinic at least 48 hours in advance of any appointment cancellation or rescheduling to avoid incurring unnecessary charges to your account.

    A $50 fee is charged for any returned and unpaid check.

    4. Do I have to make an appointment in advance?

    Appointments are recommended but not required. Same day appointments are offered every clinic day. Please call early in the day to check for availability of these appointment slots.

    5. Notice of change of personal information

    Change of personal information- If you have recently moved or changed your contact information such as address, phone number, or insurance, please inform the receptionist.

    6. Prescription refills

    We are pleased to offer electronic prescription refills. We ask that your prescription refill requests be called to your pharmacy to ensure that correct medication and dosage will be reordered for you. Your pharmacy will handle the rest by faxing or electronically sending us a refill request. Please allow up to 72 hours for completion of prescription refills. To expedite future refills, please notify our staff of your pharmacy name and address so that this information can be entered into your electronic medical record.

    7. Phone messages after clinic hours

    When leaving a message after-clinic hours, we ask that you do not leave any non-urgent messages. Please call back during the regular office hours for these non-urgent matters. In case of an emergency, please dial 911 or go to the nearest ER for emergency care. Otherwise follow the prompt instructions and one of our physicians will call you back shortly.

    8. Lab test results

    If you have not heard from our clinic regarding your lab or imaging results within 5 business days, please call our office and we will be glad to assist you.

    9. College / Work (not DOT) / Sport physical exams

    College, Work (not DOT) and Sport Physical - These should be scheduled in advance of the beginning of school or deadline in order for completion of forms and any necessary lab tests or immunizations. Please bring with you the appropriate school/work/sport physical form to be filled. If you are new to the clinic, please bring with you your previous immunization record.

    10. Medical records

    Record copying protocol and fee: Please allow up to 2 weeks for our office to make a copy of your medical record.

    Call our office to inquire about copying fee.

    11. Form requests

    Some forms are quite lengthy and require additional physician time for completion. There is a $20 to $40 fee for form requests. Please allow sufficient time for our physicians to complete your forms.

    12. Follow-up from emergency room or hospital visits

    On your follow-up visit with the physician, please bring with you your hospital medical record including discharge instructions. This will allow for verification of your diagnosis, lab results, imaging results, and prescribed medications resulting from your hospital visit.

    13. Notice regarding patient protections against surprise billing

    See Your Rights & Protections Against Surprise Medical Bills

    Please note: 

    A $50 fee will be charged for any returned and unpaid check for any clinic visit.

    Your Rights and Protections Against Surprise Medical Bills

    When you get emergency care or receive treatment by an out-of-network provider at an in-network hospital or ambulatory surgical center, you are protected from surprise billing or balance billing.


    What is “balance billing” (sometimes called “surprise billing”)?

    When you see a doctor or other health care provider, you may owe certain out-of-pocket costs, such as a copayment, coinsurance, and/or a deductible. You may have other costs or have to pay the entire bill if you see a provider or visit a health care facility that isn’t in your health plan’s network.

    “Out-of-network” describes providers and facilities that haven’t signed a contract with your health plan. Out-of-network providers may be permitted to bill you for the difference between what your plan agreed to pay and the full amount charged for a service. This is called “balance billing.” This amount is likely more than in-network costs for the same service and might not count toward your annual out-of-pocket limit.

    “Surprise billing” is an unexpected balance bill. This can happen when you can’t control who is involved in your care—like when you have an emergency or when you schedule a visit at an in-network facility but are unexpectedly treated by an out-of-network provider.

    You are protected from balance billing for:

    Emergency services

    If you have an emergency medical condition and get emergency services from an out-of- network provider or facility, the most the provider or facility may bill you is your plan’s in- network cost-sharing amount (such as copayments and coinsurance). You can’t be balance billed for these emergency services. This includes services you may get after you’re in stable condition, unless you give written consent and give up your protections not to be balanced billed for these post-stabilization services.  

    Certain services at an in-network hospital or ambulatory surgical center

    When you get services from an in-network hospital or ambulatory surgical center, certain providers there may be out-of-network. In these cases, the most those providers may bill you is your plan’s in-network cost-sharing amount. This applies to emergency medicine, anesthesia, pathology, radiology, laboratory, neonatology, assistant surgeon, hospitalist, or intensivist services. These providers can’t balance bill you and may not ask you to give up your protections not to be balance billed. If you get other services at these in-network facilities, out-of-network providers cannot balance bill you, unless you give written consent and give up your protections. 

    You are never required to give up your protections from balance billing. 

    You also are not required to get care out-of-network; 

    You can choose a provider or facility who is in your plan’s network.

     When balance billing isn’t allowed, you also have the following protections:

    • You are only responsible for paying your share of the cost (like the copayments, coinsurance, and deductibles that you would pay if the provider or facility was in-network). Your health plan will pay out-of-network providers and facilities directly.

    • Your health plan generally must:

    o Cover emergency services without requiring you to get approval for services in advance (prior authorization).

    o Cover emergency services by out-of-network providers.

    o Base what you owe the provider or facility (cost-sharing) on what it would pay any in-network provider or facility and show that amount in your explanation of benefits.

    o Count any amount you pay for emergency services or out-of-network services toward your deductible and out-of-pocket limit. If you believe you have been wrongly billed by a Privia provider, please call a Privia patient financial specialist at 1-888-774-8428.

    You can also visit for more information about your rights under federal law.

    Recognitions & awards