Our physicians are board certified
Our team specializes in care and treatment for allergy, asthma, and more
Our physicians are board certified
We’re here to make your care easy
Philanthropy is a top value at HCA
It’s important to us that our patients feel comfortable
We care for the whole patient
Our staff members are present with every patient
Dr. Amin Mery is a native Texan who received his bachelor’s degree from the University of Texas at Austin and completed his medical degree at the University of Texas Health Science Center-San Antonio.Read Full Bio
Dr. Amin Mery is a native Texan who received his bachelor’s degree from the University of Texas at Austin and completed his medical degree at the University of Texas Health Science Center-San Antonio. He then performed his residency at Brackenridge Hospital of Austin as part of the Austin Medical Education Program. Dr. Mery completed his fellowship in adult and pediatric allergy and immunology at the Brigham and Women’s Hospital, Harvard Medical School, where he performed research in mast cell biology, a critical component of allergic disease.
Dr. Mery is board certified by the American Board of Allergy and Immunology as well as the American Board of Internal Medicine, and he is a member of American Academy of Allergy, Asthma and Immunology, and the American College of Allergy, Asthma, and Immunology. His advanced training gives Dr. Mery an exceptional understanding of the clinical aspects of asthma treatment, as well as a myriad of immunologic disorders. He is also trained in injection techniques of Botox Cosmetics and dermal fillers. Dr. Mery is fluent in Spanish.
Dr. Mery has a number of causes he associates himself with, but one of his biggest is with Privilege To Serve. Founded in 2008, Privilege To Serve is a nonprofit helping orphans & vulnerable children in developing nations to reach their full potential through empowerment of the children, their caretakers & the local grass roots community organizations that support them.
Dr. J. Alex Martinez has been an allergist for the past 20 plus years. He received his bachelor’s degree from the University of Missouri-Columbia and his medical degree from the University of Kansas.Read Full Bio
Dr. J. Alex Martinez has been an allergist for the past 20 plus years, he joined Hill Country Allergy & Asthma in 2019, however he is not new to Austin. He received his bachelor’s degree from the University of Missouri-Columbia and his medical degree from the University of Kansas. After finishing his residency in Internal Medicine at the University Health Science Center in San Antonio, Dr. Martinez completed a fellowship in Allergy at the University of Kansas before making his home in Austin. He was in private practice here for many years but more recently has been a staff allergist at the Carl R. Darnall Army Medical Center in Killeen caring for active duty soldiers and their families. He is enthusiastic to be back in the Austin area where he can hike and bike on the many trails and attend a variety of live entertainment venues. You may also see him about sampling many of the eateries that the area has to offer. Dr. Martinez also enjoys spending time with family and friends near and far.
Daniel Coffey, MD is Board Certified in Family Medicine and completed residency at LSU Health Science Center Lake Charles Memorial Family Medicine Residency Program.Read Full Bio
Daniel Coffey, MD is Board Certified in Family Medicine and completed residency at LSU Health Science Center Lake Charles Memorial Family Medicine Residency Program. He was in private practice for 10 years in NY’s Hudson Valley. He likes to travel and keep active doing martial arts.
Sabrin Rahman, DNP, APRN, FNP-C has completed her doctorate in family nursing practice from UT Health Science Center in San Antonio, Texas. She has been a nurse for over 7 years and counting.Read Full Bio
Sabrin Rahman, DNP, APRN, FNP-C has completed her doctorate in family nursing practice from UT Health Science Center in San Antonio, Texas. She has been a nurse for over 7 years and counting. She loves educating her patients and believes that each patient should be treated as a family member. She likes establishing long-lasting trustworthy relationships with her patients and believes that each relationship should be based on compassion, genuineness, and communication. She loves Austin due to its diversity and inclusion. In her free time, she loves eating out and trying different cuisines with her husband and son. Besides practicing medicine and taking care of her patients, food is her other love language.
Reenu Sajan, APRN, FNP-BC was born and raised in India. She obtained her Bachelors from the renowned Christian Medical College CMC, Ludhiana, India. After gaining clinical nursing skills along with teaching skills she migrated to New York to chase her American dream.Read Full Bio
Reenu Sajan, APRN, FNP-BC was born and raised in India. She obtained her Bachelors from the renowned Christian Medical College CMC, Ludhiana, India. After gaining clinical nursing skills along with teaching skills she migrated to New York to chase her American dream. Later moved to Houston, started her family and today she calls her home to be Austin since 2018 along with her husband and two sons. With a 13-year background in critical care, medical surgical and obstetrics nursing, she completed her Masters in nursing to become a family nurse practitioner from The University of Texas at Houston Health Science Center. Reenu is excited and enjoys working at Hill Country Allergy & Asthma as this is her special interest. Outside of work, she enjoys dancing, yoga, Abstract painting, watching movies with family and friends and playing badminton.
Care Philosophy: “Basically, I enjoy what I do. I treat my patients the same way I would like to be treated. I feel good when I help someone, that’s why I am here for you. I believe in evidence-based Medicine and will not hesitate to check and recheck to make sure I am doing the best for my patients. I believe in teamwork and Patient-Centered care. I always believe and practice this; as Mother Teresa often shared, “We can do no great things, only small things with great love.” That’s it, Simple!”
JoAnna is a native Austinite, growing up between Austin and Bastrop, attending Southwest Texas State University for her Bachelor of Science degree in Biology.Read Full Bio
JoAnna is a native Austinite, growing up between Austin and Bastrop, attending Southwest Texas State University for her Bachelor of Science degree in Biology. She received her degree in Physician Assistant Studies from UTMB Galveston in 2001 before joining Austin Heart, where she worked in cardiovascular medicine for almost 21 years before joining Austin Geriatric Specialists, seeing patients in their homes and in the assisted living setting for just over a year prior to joining Hill Country Allergy & Asthma. Outside of work, she enjoys reading, trail running, work outs with her CrossFit Austin tribe, live music, and spending time with family and friends.
The cure for anything is salt water~ sweat, tears or the sea.
“My son has been going to Dr. Mery for over a year. I always appreciate how attentive the nurses are to him when checking him out before he is released after his shot. This office is very clean and organized as well.”
“My whole family goes to Dr. Mery. He has been a major factor in our family’s health and well-being. Dr. Mery is compassionate and understanding. He is determined to help those who come to see him and truly cares for his patients.”
“Hill Country Allergy has been a very good experience for me these last few weeks. A great team has been providing me with a thorough job of evaluating my allergy needs and implementing a specific plan to reach my specific goal of setting my allergies under control. All staff is efficient, courteous, and very knowledgeable of my specific concerns. I am very pleased with my current service.”
“The staff at Hill Country Allergy & Asthma is nothing short of amazing. They greet you with a smile and they actually remember my name; you are not just another face. They are patient and take the time to explain things even if you ask them the same questions every other time you are there. The technicians providing the shots are extremely careful and service is usually quick due to the check in system they utilize. They are well organized, with excellent customer service.”
“Whenever Julie is the one who gives me my shot, I almost look forward to getting the shot. Her sunny disposition brightens my day. I did say that it almost makes me want to get a shot!”
“I have been very pleased with the great care I have received from Dr. Mery, as well as his entire staff. They are all great!”
“I look forward to getting my allergy shots every month. The office staff is so friendly and professional. It is a very nice and relaxed atmosphere too.”
“Dr. Mery saved me! I struggled for months with a skin reaction that three other doctors were unable to get under control. It was clear from the onset that Dr. Mery is truly invested in his patients as he spent so much time with me trying to understand my situation and helped me tremendously with my condition. Dr. Mery and his staff genuinely care for their patients!”
“My son saw Dr. Mery years ago for his bad allergies. He was tested, started shots and has been on shots for a couple of years now. We cannot begin to express our gratitude to HCAA for helping our family. Our son is completely different kid – he can now play on sports teams and enjoy playing outside with his buddies! THANK YOU DR. MERY!”