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Meet Our Providers

Dr. Madeline David


Madeline is a doctorly prepared, board-certified family nurse practitioner at Mountcastle Medical Spa and Laser Center with 6+ years of experience in cosmetic surgery and aesthetics. She specializes in non-invasive aesthetic medicine and is passionate about delivering beautiful and natural results and promoting overall health and wellness. Madeline specializes in Botox and Dysport injections, Kybella, dermal fillers, PRF ezGel, PRF hair restoration, and Morpheus 8.

After graduating from George Mason University, Madeline gained experience in critical care nursing and shortly after transitioned into aesthetics bringing her passion for art and science together. Trained by several recognized aesthetic leaders, plastic surgeons, and injection experts, Madeline joins Mountcastle Medical Spa and Laser Center with diverse training and experience.

When not in the office, Madeline can be found traveling, exploring local restaurants, and spending time with her husband and dog, Bruno.

Follow Madeline on Instagram @injector_madeline!

Bachelor of Science in Nursing, Summa Cum Laude, George Mason University
Doctor of Nursing Practice, Magna Cum Laude, George Mason University.

Accreditations and Professional Affiliations:
ANCC Board Certified Family Nurse Practitioner
American Academy of Dermatology
American Association of Nurse Practitioners
Virginia Counsel of Nurse Practitioners
Sigma Theta Tau International Honors Society of Nursing


Meredith West

Physician Assistant

Meredith West PA-C has worked with Dr. Mountcastle since 2009, specializing in plastic surgery and aesthetic injectables. Meredith consistently facilitates successful outcomes for patients in the Northern Virginia area, performing procedures in the office, including Botox, Dysport, Sculptra, PRF ezGel, PRF Hair Restoration, Full Facial Balancing, and dermal fillers to any other areas needed.

Meredith prioritizes patient education and spends quality time with her patients to ensure their questions and concerns are addressed. Her patients return to her time and time again due to the stellar results she delivers.

She earned a bachelor’s degree at James Madison University, and a master’s degree in Physician Assistant studies at Shenandoah University. Now, Meredith is a nationally board-certified Physician Assistant at Mountcastle Medical Spa and Laser Center.

Meredith is married, has two beautiful daughters, and an adorable dog named Ruby. Quality time at the West household includes spending time at the beach and simply enjoying time together as a family.

Follow Meredith on Instagram at !

Ashley Schwab


During her time at Mountcastle Medical Spa and Laser Center, Ashley Schwab has served as an Aesthetic Injector. Ashley specializes in Botox and Dysport injections, Sclerotherapy, Kybella, and dermal fillers. Lips by Ashley are known far and wide in NOVA.

She was raised in Ashburn, VA, and attended Broad Run High School. After graduating, Ashley obtained a bachelor’s degree in nursing from Shenandoah University. Ashley has been employed in several healthcare settings but has primarily worked most of her career experience in critical care.

You may find Ashley singing when she is not working, and devoting time to family and friends.

Follow Ashley on Instagram at @aestheticsbyads!


Maria Foster


Maria Foster is a Licensed Master Esthetician and Laser Technician with more than ten years of experience in dermatology and cosmetic procedures. She specializes in microdermabrasion, chemical peels, skin rejuvenation, facials, eyelashes, acne, rosacea, and Morpheus 8. She has eight years of experience with aesthetic laser treatments (Palomar MaxR laser hair removal, Veingogh, Fraxel, Clear + Brilliant, Sciton BroadBand Light (BBL), and Palomar MaxG Vascular/Pigmented laser technologies).

She has worked at Mountcastle Medical Spa and Laser Center since early 2015 and specializes in customizing patient procedures with skincare products.

After hours, Maria volunteers at INOVA Loudoun Hospital and enjoys being with her family and friends. She was born and raised in Quito, Ecuador, and has lived in Northern Virginia for 15 years. She is bilingual and has a strong following of both Spanish-speaking patients and English-speaking patients. She is loved by all and has a calm and warm demeanor.

Follow Maria on Instagram at @beautifulyoubymaria!

Ragan Riley


Ragan Riley is a Licensed Master Esthetician and Laser Technician in facial rejuvenation, lasers, Morpheus 8, and waxing at Mountcastle Medical Spa and Laser Center. She takes pride in her work with Dr. Mountcastle and provides the best noninvasive treatments on the market to patients. Ragan upholds every experience with the professionalism and gentleness that our patients value.

She is exceptionally knowledgeable about many skin treatments like the chemical peels, lasers, and derma injectables we provide (and she loves making our patients look beautiful and healthy).

In addition, Ragan has set herself apart by being the foremost ZO skincare expert. Ragan has logged numerous training hours and was even invited to attend an exclusive ZO Conference where she met Dr. Zein Obagi and attended his workshop!

Ragan is also one of our CoolSculpting experts. She is a CoolSculpting Masters Graduate, a title honored only to those who have attended the CoolSculpting Masters Academy Course. Across the board, Ragan absolutely delivers on results and assists her patients in reaching their goals.

When not in the office, Ragan can often be found spending time with her wife and mini zoo or assisting with local animal shelters.

Follow Ragan on Instagram at @wholebeauty_byragan!

Jillian Caldwell


Jillian Caldwell is a Licensed Master Esthetician & Laser Technician at Mountcastle Medical Spa and Laser Center with 10+ years of experience in non-invasive skincare & advanced treatments.

She specializes in customized facials, microdermabrasion, laser hair removal, IPL, Fraxel, Cool Peel CO2 laser skin re-surfacing, photofacials, chemical peels, microneedling, dermaplaning, waxing, brow/lash tinting, BBL, Morpheus 8, and skin tightening. She has extensive knowledge of product ingredients & applications. With her breadth of knowledge, Jillian understands that patient care must extend outside of the treatments in the office. Consultations and/or treatments with Jillian leave our patients with a wealth of information on how to further care for their skin at home and in between treatments.

After many successful years working as a PM in a corporate environment, Jillian graduated from Dermal Science International in Reston, VA. She also has a BA from the University of New Mexico in Education. She has a great passion for skincare & tailors all of her treatments to achieve the goals that patients hope to achieve while setting realistic expectations.

In her spare time, she is a “foodie” and loves to travel & cook.

Follow Jillian on Instagram at @estheticsbyjillian!

Mallory Geiger


Mallory Geiger serves as the head nurse at Mountcastle Plastic Surgery and Vein Institute in Ashburn, VA. Working alongside Dr. Mountcastle for four years, Mallory specializes in surgeries of the breast, body, and liposuction, helping patients navigate the pre-op and post-op processes and providing aftercare. At Mountcastle Medical Spa, Mallory performs PRF hair restoration, Sclerotherapy, and Steroid Injections for Keloids. Mallory emphasizes connecting with and educating patients to ensure they feel comfortable throughout the consultation and procedure stages of treatment.

Mallory grew up in Pennsylvania and earned her bachelor’s degree in Psychology with a minor in Sociology at Penn State University. Mallory then continued to ECPI University and graduated as a Registered Nurse, class of 2021.

When not at the office, Mallory enjoys spending time with her family and Norwegian Elkhound, Freya!