About Family Allergy & Asthma Care
We’ve brought peace of mind to families for over 25 years. Our friendly, caring team helps both adults and kids find relief from stressful food allergies, bothersome environmental allergies, and debilitating asthma.
Being moms and caring for our own families has given us a deeper understanding of how to care for you and your family. We understand the need for early morning and evening clinic hours, educational resources, a listening ear, and a caring heart. As board-certified allergists we have completed the highest level of training in allergies, asthma, and immunology which allows us to offer you expert care. We’re your devoted partners in solving your healthcare needs.
Meet Our Doctors
Fellowship-trained, board-certified allergists. And, we’re also moms.
Mary Hudelson, MD – DABAI, Director
Treating allergy patients is often like solving a mystery and requires time spent listening and gathering data in order to create a treatment plan that works! Now that’s truly fun!
When I founded FAAC in 1993, I wanted to do things differently to provide an innovative patient-centered experience. That’s why, when you visit us, we are able provide services such as allergy testing, sinus CT scans, and lung function tests in the office at the same time as your appointment; we offer extended office hours; and the same clinical team member stays with you through your entire visit.
My military service as an Army reservist activated for Operation Desert Storm was a life-changing experience. Not only did I meet my husband, I solidified my passion to care for entire families because it was my job to care for the military dependents (children and spouses) of Aviano Base in Italy while their family member was deployed. Upon my return to the U.S., I chose allergy/immunology as a specialty, partly because I would be able to care for all ages of people – babies to centenarians. And that’s just what I have done! And now, I’ve been in practice long enough that I often get to see the children of the children I cared for!
I love being an allergist! Every day, I am thankful for the opportunity I have to compassionately partner with patients and family members to make a positive difference in their lives.
Diplomate: American Board of Allergy & Immunology
Fellowship: American College of Allergy, Asthma and Immunology, American Academy of Allergy, Asthma and Immunology
MD: Texas Tech University; 1987 Internship/Residency: Internal Medicine, Presbyterian Hospital of Dallas, Dallas, TX, 1990
Fellowship: Allergy and Immunology, University of Texas, 1993
BS: Biology, Texas Christian University, 1982. Dr. Hudelson also served in the United States Army Reserves as a medical officer and was active during Operation Desert Storm.
On Staff: Presbyterian Hospital of Flower Mound, 2012–present; Presbyterian Hospital of Denton, 2014–present; Medical City Lewisville, TX, 1993–present; Medical City Denton, 2014–present; Baylor Medical Center of Grapevine, 2014–present; Baylor Medical Center of Carrollton, 2014–present
Chief of Staff: Medical Center of Lewisville, 2003
Assistant Professor: Internal Medicine, Division of Allergy, Asthma and Immunology, University of Texas Southwestern Medical School, Dallas, TX, 1995-present
Member: American Medical Association; Texas Medical Association; Texas Allergy, Asthma and Immunology Society; Denton County Medical Society; Joint Council of Allergy, Asthma and Immunology
Marie Fitzgerald, MD – DABAI,
North Texas Pollen Station Director
I am passionate about improving every patient’s quality of life through better control of their asthma and allergies. I had allergies as a child and my treatment was life changing for me. I want to make that possible for others. It is so rewarding when one of my patients comes in and tells me how their asthma no longer hinders them from sports or their allergies no longer hinder them from their outdoor activities.
My interest and passion in allergies and asthma began at an early age. My dad was one of the early allergists in Texas. When he would come home in the evenings, I saw the joy he received from treating allergy and asthma as well as helping his patients find improved health. My dad was ahead of his time basing treatment for patients on the local pollen he counted at his station on the top of a Dallas building in the early 1950’s. For 15 years, I have enjoyed being the director of our nationally–certified pollen counting station which is one of two certified stations in the metroplex. We provide counts for other allergists in our region which helps everyone better care for families.
As a mom, I’ve experienced the panic and anxiety of raising kids with food allergies and asthma. I know the impact on families firsthand, and it’s created an innate passion for my practice and learning all I can to treat patients of all ages – infants to elders. Just like my colleagues, I’m double-boarded in allergy and immunology, as well as internal medicine. I’m also a fellow of the American Academy of Allergy and Immunology. Through my experience as a mother and doctor and as an associate professor of medicine at UT Southwestern, mother, and doctor, I know that listening to patients and working with them to find the best treatment for their lifestyle is critical.
Diplomate: American Board of Allergy & Immunology
Fellowship: American College of Allergy, Asthma and Immunology, American Academy of Allergy, Asthma and Immunology
MD: Texas Tech University, 1987; Internship/Residency: Internal Medicine, Presbyterian Hospital of Dallas, 1990
Fellowship: Allergy and Immunology, University of Texas, Dallas, 1993
Residency: Internal Medicine, Jewish Hospital, St. Louis, MO, 1989–1992
On Staff: Medical City Lewisville, 1997–present; Presbyterian Hospital of Denton, 2014–present; Baylor Medical Center of Grapevine, TX, 2014-present; Baylor Medical Center of Carrollton, 2014–present
Publications: M.H. Holman, et al., “Immunologic Characterization of Allergic Bipolaris (Fungal) Sinusitis,” Journal of American College of Immunology (1995)
Assistant Professor: Internal Medicine, Division of Allergy, Asthma and Immunology, University of Texas Southwestern Medical School, Dallas, 1995–present
Member: American Medical Association; Texas Medical Association; Texas Allergy, Asthma and Immunology Society; Dallas County Medical Society; Denton County Medical Society
Erin Clarke, MD – DABAI
I love my career as an allergist! I sincerely care about each and every one of my patients and think about them often. It is incredibly rewarding when I see them feeling better and able to participate in the things they love, such as softball, exercise, and outdoor activities.
Becoming a mom opened my eyes to the challenges that parents face. I know that kids are a parent’s entire world and just a regular day is hard enough. I take a team approach to treatment, listening to every patient–from children to seniors–without judgment or assumptions to understand their individual needs. This allows me to determine what is realistic for patients to adhere to, especially in the busy seasons of their lives.
Throughout my training and career as a board-certified allergist, I have always strived to be my best and stay in tune with the most up-to-date and innovative treatments. I’ve had many accomplishments in my career but what really excites me and brings me great joy is taking that training and helping my patients find dramatic improvement in their everyday lives!
MD: University of Texas Southwestern Medical School, Dallas 2002–2006
Residency: Internal Medicine, University of Texas Southwestern Medical Center, Dallas 2006–2009
Fellowship: Allergy and Immunology, University of Texas Southwestern Medical Center, Dallas, 2010–2012
BS: Psychology, Rice University 1998–2002
On Staff: Medical City Denton, 2014–present; Presbyterian Hospital of Denton, 2014–present; Baylor Medical Center of Grapevine, 2014–present; Baylor Medical Center of Carrollton, 2014–present
Honors: 2006 Alpha Omega Alpha, 2001 Phi Beta Kappa, 2000 Golden Key National Honors Society, 2000 National Society of Collegiate Scholars, 1998-2001 President’s Honor Roll at Rice University
Teaching: Mentor in Introduction to Clinical Medicine Course, University of Texas Southwestern Medical Center, Dallas, 2007–2008; Resident’s Lecture, University of Texas Southwestern Medical Center, Dallas, 2007–2008
2011: The Role of Epigenetics in Inner City Asthma. Inner City Asthma Consortium. National Institute of Health Multicenter Trial. University of Texas Southwestern Medical Center, Dallas.
2011: Biomarker of Sublingual Immunotherapy 2 (BioCSI2). Inner City Asthma Consortium. National Institute of Health Multicenter Trial. University of Texas Southwestern Medical Center, Dallas, TX.
2011: Preventative Omalizamab or Step-up Therapy for Severe Fall Exacerbations (PROSE). Inner City Asthma Consortium. National Institute of Multicenter Trial. University of Texas Southwestern Medical Center, Dallas, TX.
Publications: E.E Clarke and J.A. Bird Opposing Effects of Cat and Dog Ownership and Allergic Sensitization on Eczema in an Atopic Birth Cohort (Itasca, IL: American Academy of Pediatrics, 2011).
SASHA ALVARADO, DO – DABAI
Being an allergist/immunologist is a dream job for me. This specialty is one of the areas in medicine where we can still take the time to learn about the patient as a whole person – their lifestyle, their environment, and their personal goals. Our focus is always to improve quality of life.
I suffered from allergies as a child, and I believed that I would just always have to live with my symptoms. I had eczema, terrible sneezing, stuffy and runny nose, and recurrent bronchitis every winter. I was suspected to be allergic to pollens and had all kinds of restrictions on my activities – no going to recess at school in the winter, no visiting the mall during the holidays, no playing in the grass, etc. My symptoms were so pervasive in college that I was referred to an allergist, and getting immunotherapy truly changed my life. I love hearing the same thing from my patients, now.
My residency training was internal medicine, and I love that this specialty has given me the opportunity to treat all ages. My fellowship training was in the pediatric department at LSU seeing equal numbers of children and adults, and this gave me a comprehensive education. Having my own kids (one with eczema) in addition to working in a pediatric department has made me very comfortable treating children. I love seeing kids and making sure their allergies don’t limit them.
Fellowship: Allergy and Immunology, Louisiana State University Health Science Center, Shreveport, LA 2017–2019
Residency: Internal Medicine, University of Oklahoma at Tulsa School of Community Medicine 2014–2017
Medical School: DO, Texas College of Osteopathic Medicine
BS: Human Biology, University of Texas, Austin 2008–2010
Certification: ABAI eligible, ABIM certified
On Staff: Medical City Lewisville, 2019–present; Medical City Denton, 2019–present; Texas Health Presbyterian Hospital Denton 2019–present; Texas Health Presbyterian Hospital Flower Mound, 2019–present; Baylor Scott & White Medical Center – Grapevine, 2019–present; Baylor Scott & White Medical Center – Grapevine, 2019–present
Honors: 2017 OU Tulsa Medical Knowledge Award for highest In-Training Exam Score, 2009-2010; University of Texas at Austin Undergraduate Research Fellowship
D. Munoz-Mendoza, K. Jackson, S.A. Alvarado, and S.L. Bahna, Antihistamines. In: J.V. Aranda and Van Den Anker (eds.), Neonatal and Pediatric Pharmacology: Therapeutic Principles in Practice, 5th ed., Chapter 47, (Philadelphia: Lippincott, Williams & Wilkins, 2019).
S.A. Alvarado SA, , D. Muñoz-Mendoza D, and S.L. Bahna SL., “High-risk drug Drug rashesRashes,”. Annals of Allergy, Asthma & Immunology, 2018;121(5):552-560.
S.A. Alvarado, D. Muñoz-Mendoza, K. Jackson, R. D’Mello, and S.L. Bahna, CME examination on “Atopic Dermatitis Endotypes and Implications for Targeted Therapeutics” by T. Czarnowicki, H. He, J.G. Krueger, and E. Guttman-Yassky, Journal of Allergy and Clinical Immunology, (Amsterdam, Netherlands: Elsevier, 2019).
S.A. Alvarado, M. Nassiri, and S.L. Bahna, “Scoring systems for allergies and asthma in clinical research and practice,” Allergy & Asthma Proceedings, (Providence, RI: OceanSide Publications, 2019).
R. D’Mello, S. Alvarado, and S.L. Bahna, “Uncontrolled severe persistent asthma: more than meets the eye,” Annals of Allergy, Asthma & Immunology, 2018
S. Alvarado, K. Mattaparthi, and J. Purser, “Knowledge deficiencies of primary immunodeficiency diseases among internal medicine residents,” Annals of Allergy, Asthma & Immunology, 2018
S. Alvarado, S. Umer, and S.L. Bahna, “Recurrent hives: beyond idiopathic urticaria,” oral presentation on familial cold autoinflammatory syndrome at Louisiana Allergy, Asthma, and Immunology Annual Meeting on June 24, 2018, and poster presentation at American Academy of Allergy, Asthma, and Immunology Annual Meeting February 23, 2019.
Our Friendly Physician Assistants
Compassionately caring for your family.
Angelica Ybanez-Bennett, Board Certified, PA-C
I have always been passionate about health and wellness. For 9 years, I cared for patients in a primary care setting and truly enjoyed my patients and diligently strived to help them establish a healthier lifestyle. It’s now been my privilege to care for patients in the allergy and asthma specialty for the past 10 years at Family Allergy & Asthma Care.
I enjoy developing relationships with my patients at FAAC and always want to communicate clearly and compassionately to provide a collaborative approach. I want each patient to receive the highest level of personalized care and clearly understand their healthcare plan.
I enjoy all aspects of allergy and asthma but one area of allergy I am truly passionate about is food allergy. It brings me such joy to see the food allergy patients achieve their individual goals. Many of the food allergy patients I see come in on a weekly basis for oral immunotherapy and I truly look forward to our time together.
I want to make the process easy, clear and comfortable for each one of them and partner with their families to make life less challenging and develop a pathway to freedom. That freedom can make simple things like going out to eat a joy instead of a fear. My goal is to help make their life easier and less challenging. I am blessed to be the Mom of twin boys. I love spending time with my family, playing sports and being outdoors. It is rewarding to me to be in allergy and asthma where I can help other people feel better and be able to spend time with their family doing the things they love!
BS: Physician Assistant Studies, University of Texas Southwestern Medical Center, Dallas, TX 2000
AS: Biology, College of the Mainland, Texas City, TX 1996
License & Certifications: National Commission of Certification of Physician Assistants, 2001
National Commission of Certification of Physician Assistants, Recertification, 2007 Texas State Board of PA Examiners, 2001-present
Professional Organizations: American Academy of Physicians Assistants, Texas Academy of Physicians Assistants
Emily Williams, Board Certified, PA-C
For 19 years, I cared for patients as a physician assistant in a primary care setting. This opportunity has given me a unique understanding of how many factors can influence a person’s quality of life. There are many aspects of life outside of healthcare that can affect a person’s wellbeing including financial and social issues, further complicated by the fast-paced world in which we live.
My goal is to treat the whole person, giving our patients the tools they need to live their best life. I’m here to help people find confidence and comfort during treatment of their allergy and asthma conditions.
Living with allergies and asthma can limit many aspects of a person’s life, including simple things such as being outside, going to a new restaurant or exercising. An open discussion about patients’ needs is crucial when developing an effective treatment plan. Voted in the top 10 percent nationally for effective provider communication, I know the importance of a two-way dialogue. At the center of appointments is listening and effective communication. I’m honored to care for people and to have the opportunity to develop a relationship with them. It is what I want as a patient and for the care of my husband and two daughters.
BS: Physician Assistant Studies, University of Texas Southwestern Medical Center, Dallas 1999
BS: Health, Texas A&M University, College Station, TX, 1996
AA: Blinn College, Brenham, TX 1993
License & Certifications: National Commission of Certification of Physician Assistants, Texas State Board of PA Examiners 2018;
Basic Cardiac Life Support (BLS) Certified;
Certified Diabetic Educator by the National Board for Diabetic Educators
3051 Churchill Drive, Suite 130
Flower Mound, TX 75022
2701 W. Oak St., Suite 101
Denton, TX 76201