McKnight Pediatrics

Our Practice

To All of our Families;
Saturday February 13th, 2020 will be our last Saturday open until further notice.
McKnight Pediatrics continues to try to do its part in helping to contain this virus and "flatten the curve". Everything we know tells us the only way to do that is encourage our citizens to stay home, only going out for necessities. In order to comply with these recommendations, keep our families and staff safe, and provide the necessary well and sick care for our patients we have implemented the following changes as of Monday January 1st, 2021.

As we are navigating through COVID and adhering to the constant changes and requirements of social distancing we are requesting that when you arrive to the garage we are asking that you complete the contactless check-in thru the Healow app to let us know you have arrived. Once you have completed the check in please call the office for instructions on entering the office for your appointment.

Please be aware that we do not have a grace period and if you arrive late for your appointment you will have your appointment rescheduled and there is a $25 "missed appointment fee" that will need to be paid before the next appointment can be made.
McKnight Pediatrics monitors the changes occurring and policy recommendations being made on a daily basis. We will make changes accordingly. It is our hope that we will return to life as usual sooner rather than later. Reality and data tell us we must all take this pandemic seriously and do our part.

Please do not hesitate to call us if you have questions. Stay tuned for updates.

Thank you for choosing McKnight Pediatrics! Here you can learn a little about us, how to reach the office and what services we offer.



Welcome to our website! First, we'd like to thank you for your interest in us and for taking the time to search for us. We hope you will like what you find and we invite you to return frequently. Next, we'd like to extend our gratitude for the many families who continue to entrust us with the care of their children. Without you we could not exist. We thank you for choosing us, trusting in us, and allowing us to be a part of your village.

We hope that you find our website helpful, informational, and easy to navigate. We welcome any and all comments. Click on the 'Contact Us' tab to learn how to send comments.

Bon voyage!


Marjorie B. McKnight, M.D.
Dr. McKnight is a native Washingtonian and graduate of Howard University and George Washington University Medical School. She has practiced pediatrics in Washington, DC since 1986. While practicing general pediatrics, her passion lies in wellness and disease prevention.

Dr. McKnight's interests outside of practice include gardening, cooking, walking, swimming and spending time with family and friends, especially her grandchildren Carter, Chase, and Claude

Fatima Tariq, M.D.

Dr. Tariq attended Dow Medical College in Pakistan, following which she completed pediatric residency at Southern Illinois University in Springfield, Illinois and subsequently moved to the DC area to be closer to family. She enjoys all aspects of pediatrics and has a penchant for preventive pediatrics and mental health. She is a strong believer in "it takes a village to raise a child", and with a collaborative patient-parent-doctor relationship wants to ensure children flourish, are happy and healthy, and reach the maximum potential of growth and development.

Her interests outside of the Practice include watching animated movies, traveling to national parks, and hosting dinners for friends and family. Dr. Tariq is bilingual and is fluent in English and Urdu.

Hugh Calkins, M.D.

Dr. Calkins was born at Andrews Air Force Base before moving to the Pacific Northwest. He completed a pediatric residency at Crozer-Chester Medical Center and was honored with the Gerald B. Kolski Award for Outstanding Dedication and Teamwork for two consecutive years by the residency program.
His interests outside of pediatrics include outdoor activities, such as running and biking, spending time with family and friends, and immersing himself in the community to help and serve others. He balances his love for science with photography.

Beth Dolan, N.P.
Beth Dolan is a Family Nurse Practitioner certified through the American Association of Nurse Practitioners. She earned her Masters Degree in Nursing from The George Washington University (GWU), and she graduated with honors from The Catholic University of America with a Bachelors Degree in Nursing.
Prior to joining Washington Pediatric Associates, for eight years, Beth worked as a Registered Nurse in the Intensive Care Unit at the GWU Hospital, where she specialized in cardiac, trauma, and neuro care. In 2014, Beth was awarded the Critical Care Nursing Mentor Award. She spent the past 3 years working in a pediatric practice here in Washington, DC.

Beth is a member of the American Association of Nurse Practitioners and the Nurse Practitioner Association of the District of Columbia.

In her spare time, Beth enjoys cooking, reading books, traveling and trying new restaurants in the DC area.


Our front office staff works together as a team to ensure the practice operates effectively and efficiently. Their responsibilities include answering your calls, taking and sending messages to the doctors, scheduling appointments, maintaining your records, and providing assistance during your visit among many others.

The members of our front office staff are: Kyle Butler-Myers, Dorian Degrandez, and Patricia Lancaster.

Stephanie Redmond, our office manager, has been with the practice since 1992 and knows all there is to know about the office. She is always happy to help you in any way. Stephanie is also a parent in the practice.

Doretha Carroll is our operations manager. She works very hard before, during, and after office hours to keep this ship afloat.

Kyle Butler-Myers is an administrative assistant and the office's IT guru who re-joined the practice in March of 2019.

Xenia Brown is an human resource assistant who joined our practice in February of 2020.

Dorian Degrandez is an administrative assistant who joined our practice in May of 2021.

Torree Davis is an administrative assistant who joined our practice in September of 2021.

Our clinical office is outstanding! We are fortunate to have well qualified, well trained medical assistants who all began their careers with our practice. They work every day to deliver the best possible care to you and your children. In addition, they strive to get to know your children, to ease their fears and to comfort them when needed.

Angelica Lara is a medical assistant who joined our practice in August 2012.

Angela Henry is a medical assistant who joined our practice in February of 2019 (seen below)
small IMG_6295.jpg

Endia Hamner is a medical assistant who joined our practice in March of 2019 (seen above)

Jernae Hawkins is a medical assistant who joined our practice in August of 2021.

Patient Portal

The Patient Portal is now up and running! Click the link below to login.

Patient Portal

Contact the office to set up an account. You will need to provide an email address and we will web enable you so that you will be able to access the portal. You get one set of login information per child. If you are unable to remember your information or get locked out then please contact the office, so we can reset and resend your information. Passwords last for seven days,so please try to login within the week you receive the login information. New patients can pre-register before their first appointment with the practice.

Although you can currently do a lot with the portal, there are some features that are not enabled yet.

  • - You can view when your next appointment is, but you cannot schedule or cancel one. You must still call the office to do that.
  • - You can view patient visit summaries. This is the printout you usually receive at checkout after an appointment.
  • - You can view and print out a immunization records at home.
  • - You can view normal results labs. If an abnormal result occurs, the doctor will reach you.
  • - You may send a general message to the practice or a message about a prescription refill, but the portal is monitored by the front office staff, not the doctors. You cannot directly message the doctors.
  • - Please fill out the family history questionnaire as soon as possible. You can find it under the "Questionnaire" tab with the developmental checklists..

Office/Change of Information Forms

New Paitent Form.doc
Request records TO McKnight Pediatrics.doc
Request records from McKnight Pediatrics.doc
Permission to Publicize Graduation Announcement.doc
Patient Pre- Well Visit COVID-19 Screening Questionnaire

Office Information

Mon - Fri: 7am - 4pm

Sat: Currently Suspended Visits by appointment only.

$25 fee for missed appointments and same day cancellations; $75 fee for missed consult appointments Travel vaccines are available for our patients. Please call the office for more information.

106 Irving Street NW Suite 2300 Washington DC 20010 (202) 291-6257 Fax: (202) 726-4926

Services Provided:

All routine pediatric care for newborns through 21 years, travel vaccines and ear piercings for all ages, and informational workshops are available for our patients.

Flu vaccines are by appointment only, please call the office to set up an appointment.

Requests for any records from the office can be made in person or requires a signature from parent. This request form can be filled out in the office or faxed.

The practice only accepts school forms by:
1) mail with a self-addressed stamped envelope including payment of $25.00 per child
2) walk-in with the form and payment
No fax or email

We have a 10-14 business day turn around period. Call first to confirm forms are completed prior to pick-up. If needed, please call to schedule a physical in advance.

Please call the office for more information.

Accepted Insurances:

  • Aetna (HMO, POS, & PPO)
  • Amerihealth
  • Carefirst BCBS (HMO, POS, & PPO)
  • Cigna (POS & PPO only)
  • Medstar Select
  • PHCS
  • Tricare
  • United Healthcare (POS & PPO only)