About Us

Keystone Allergy and Asthma Center is located in Exton, PA, specializes in the diagnosis and treatment of various allergic conditions, including but not limited to seasonal allergies, food allergies, asthma, and allergic skin conditions. Our team is committed to delivering exceptional care and improving the quality of life for individuals affected by allergies and asthma.

Our Mission and Vision


We strive to exceed our patients’ and fellow caregivers’ expectations for comfort, convenience, and delivery of care.


We adhere to high moral principles and professional standards by a commitment to honesty, confidentiality, trust, respect, and transparency.


We collaborate and share knowledge to benefit patients and fellow caregivers for the advancement of our mission.


We demonstrate our commitment to world-class care by providing a caring and supportive environment for our patients and patients’ families.


We welcome change, encourage invention, and continually seek better, more efficient ways to fulfill our mission and achieve our goals.


We maintain the highest standards and achieve them by continually measuring and improving our protocols and outcomes.

Dr. Sujal Ghelani, DO, MBS

Board Certified Allergy & Immuology
Board Certified Internal medicine

Dr. Sujal Ghelani is a skilled and compassionate allergist and is committed to helping individuals effectively manage their conditions and improve their quality of life.  He is board certified in allergy and immunology and welcomes pediatric and adult patients for evaluation and management.

He utilizes the latest evidence-based practices and cutting-edge diagnostic tools to accurately identify the underlying causes of her patients’ symptoms and develop personalized treatment plans tailored to their unique needs.

Known for his warm demeanor and attentive approach, Dr. Ghelani prioritizes building strong relationships with his patients based on trust, respect, and open communication. He takes the time to thoroughly educate his patients about their conditions and treatment options, empowering them to actively participate in their healthcare decisions.

Dr. Ghelani grew up in Waco, Texas and earned his B.S. in Chemical Engineering from University of Texas in Austin.   After working in a oil refinery for few years, he returned to academic life earning his Doctor of Osteopathic Medicine degree from University of Medicine and Dentistry of New Jersey (now Rowan University) and completed his residency in Internal Medicine at Inspira Medical Center in New Jersey.  He then worked at numerous institutions in New York and Pennsylvania as a Hospital Medicine Physician.  He then pursued specialized training in Allergy and Immunology through a fellowship program at Larkin Hospital/LECOM in Miami, FL, where he gained expertise in the diagnosis and treatment of a wide range of allergic and immunologic conditions. 

He resides in Chester County with his wife, who is a prominent and nationally recognized restorative and sleep apnea disorder dentist in West Chester, and their two adopted dogs.

Dr Sujal Ghelani

Dr. Ghelani is currently accepting new patients at Keystone Allergy and Asthma Center. To schedule an appointment or learn more about our services, please call or text  (484) 897-7143.  You can also email us at hello@keystoneallergy.com.


Professional Affiliations:

  • American Academy of Allergy, Asthma & Immunology (AAAAI)
  • American College of Allergy, Asthma & Immunology (ACAAI)
  • Pennsylvania Allergy Association
  • Pennsylvania Medical Society
  • Pennsylvania Osteopathic Medical Association

Hospital Affiliations:

  • Main Line Health
  • Chester County Hospital