


Allergy, Asthma & Clinical Immunology Specialists Philadelphia
Main Line Allergy, LLP, based out of Philadelphia is a private practice specializing in allergy, asthma, and clinical immunology. Our allergy and asthma specialist doctors have extensive experience in the diagnosis and management of all aspects of these conditions and have been providing care for pediatric and adult patients on the Main Line and surrounding areas for over 50 years
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WELCOME TO MAIN LINE ALLERGY DR. HILLARY GORDON !
We are very excited to welcome Dr. Hillary Gordon to Main Line Allergy, who will begin seeing patients in our Ardmore office as of mid-February 2023.
Dr. Gordon is board certified in pediatric and adult allergy, asthma, and immunology. She received her medical degree from Sidney Kimmel Medical College at Thomas Jefferson University, and completed her pediatric residency training at the University of Maryland Children’s Hospital. Dr. Gordon then completed her fellowship training at Thomas Jefferson University Hospital/AI duPont Hospital for Children, where she stayed on as an attending physician providing excellent care to patients as well as also teaching other physicians to become allergists. She joins our practice with the experience, knowledge base, and warm bedside manner that we know will help her fit in seamlessly as she begins to see patients in our Ardmore office.
Please join us in welcoming Dr. Gordon to Main Line Allergy!
Our physicians are expert in the medical treatment of these disorders including:
- Hives (urticaria), eczema (atopic dermatitis), and other allergic skin conditions
- Allergy shots for seasonal and environmental allergies / hayfever
- Diagnosis and treatment of environmental, sports-induced, and other forms of asthma
- Oral immunatherapy for peanut allergy
We employ a variety of specialized on-site diagnostic testing modalities including:
- Pulmonary function (breathing) testing, exhaled nitric oxide, and other specialized breathing tests for asthma.
- Skin testing (needle-free for younger children) for environmental (hayfever), food, stinging insect, medication, and vaccine allergies
- Oral ingestion testing for various food and medication allergies
Main Line Allergy currently has three offices located in Ardmore, King of Prussia, and Willow Grove. All of our physicians are board-certified to care for children and adults by the American Board of Allergy and Immunology, and several have won awards for their outstanding care and expertise in our field. We participate in all major insurance plans and currently accept new patients from infancy through 49 years old.
Our Team
All of the physicians at Main Line Allergy, LLP, are board certified diplomats of the American Board of Allergy and Immunology.
They are all formally trained in both pediatric and adult allergy, asthma, and clinical immunology, and are all members/fellows of either the American Academy and/or American College of Allergy, Asthma, and Immunology.
All hold staff appointments at Bryn Mawr Hospital, The Childrens Hospital of Philadelphia, and/or St. Christopher’s Hospital for Children.
Changes to Office/Allergy Shot Hours
All Offices
5/29 Mon, all offices closed
7/3 Mon, all offices closed
7/4 Tues, all offices closed
9/4 Mon, all offices closed
11/23 Thurs, all offices closed
12/25 Mon, all offices closed
1/1/24 Mon, all offices closed
Ardmore
SEE ABOVE
as of Feb 1, 2023, there will be no allergy shot hours on Fridays in the Ardmore office
6/19 Mon, shots 9:30-11:30a, 1-4:30p
9/6 Wed, shots 8:30-11:30a, 1-4:30p
9/25 Mon, shots 8:30-11:30a, 1-4:30p
11/22 Wed, shots 8:30-11:30a, 1-4:30p
11/24 Fri, office closed
12/27 Wed, shots 8:30-11:30a, 1-4:30p
King of Prussia
SEE ABOVE
4/21 Fri, office closed
5/18 Thur, shots 8:30-11:30a (no pm shots)
5/19 Fri, office closed
5/26 Fri, office closed
6/16 Fri, office closed
6/22 Thur, shots 8:30a-12:30p (no p.m. shots)
6/23 Fri, office closed
7/7 Fri, office closed
7/24 Mon, shots 2-4:30p (no a.m. shots)
8/4 Fri, office closed
9/1 Fri, office closed
9/4 Mon, office closed
9/6 Wed, shots 2-4:30p (no a.m. shots)
9/8 Fri, office closed
11/24 Fri, office closed
Willow Grove
SEE ABOVE
5/29 Mon, office closed
6/1 Thurs, office closed
6/22 Thurs, shots 8:30-11:30a (no p.m. shots)
7/17 Mon thru 7/20 Thurs, office closed
8/28 Mon thru 8/31 Thurs, office closed
9/25 Mon, office closed
Regular Office Hours

ardmore
Ph: (610) 642-1643
MON | 9:00 am - 11:30 am |
1:00 pm - 7:30 pm | |
SHOTS | 8:30 am - 11:30 am |
1:00 pm - 7:00 pm |
TUES | 9:00 am - 11:30 am |
1:00 pm - 4:30 pm | |
SHOTS | 8:30 am - 11:30 am |
1:00 pm - 4:30 pm |
WED | 9:00 am - 11:30 am |
1:00 pm - 7:30 pm | |
SHOTS | 8:30 am - 11:30 am |
1:00 pm - 7:00 pm |
THURS | 9:00 am - 11:30 am |
1:00 pm - 4:30 pm | |
SHOTS | 8:30 am - 11:30 am |
1:00 pm - 4:30 pm |
FRI | 9:00 am - 11:30 am |
SHOTS | No Shots |

King of Prussia
Ph: (610) 768-9323
MON | 9:00 am - 12:30 pm |
2:00 pm - 4:30 pm | |
SHOTS | 8:30 am - 12:30 pm |
2:00 pm - 4:30 pm |
TUES | 9:00 am - 12:30 pm |
2:00 pm - 4:30 pm | |
SHOTS | 8:30 am - 12:30 pm |
2:00 pm - 4:30 pm |
WED | 9:00 am - 12:30 pm |
2:00 pm - 6:00 pm | |
SHOTS | 8:30 am - 12:30 pm |
2:00 pm - 6:00 pm |
THURS | 9:00 am - 12:30 pm |
2:00 pm - 4:30 pm | |
SHOTS | 8:30 am - 12:30 pm |
2:00 pm - 4:30 pm |
FRI | 9:00 am - 11:30 am |
SHOTS | 8:30 am - 11:30 am |

Willow Grove
MON | 9:00 am - 11:30 am |
1:00 pm - 3:00 pm | |
SHOTS | 8:30 am - 11:30 am |
1:00 pm - 3:00 pm |
TUES | 9:00 am - 11:30 am |
1:00 pm - 4:30 pm | |
SHOTS | 8:30 am - 11:30 am |
1:00 pm - 4:30 pm |
WED | 9:00 am - 11:30 am |
1:00 pm - 4:30 pm | |
SHOTS | 8:30 am - 11:30 am |
1:00 pm - 6:00 pm |
THURS | 9:00 am - 11:30 am |
1:00 pm - 4:30 pm | |
SHOTS | 8:30 am - 11:30 am |
1:00 pm - 4:30 pm |
FRI | Closed |
SHOTS | Closed |