Meet Dr. Louis E. Guida, Jr.
36 Years of Experience
Accepts Most Health Insurances
Award-Winning & Recognized Medical Leader
Board Certified Allergist & Immunologist
Four Convenient Long Island Locations
Top-Rated Allergist & Immunologist In New York
Louis E Guida, Jr. MD, FCCP, FAAAAI, FACAAI
Board Certified in Allergy, Asthma and Immunology, Pediatrics
Dr. Louis E. Guida Jr. is a renowned Allergy & Immunologist with over 36 years of experience diagnosing, treating, and managing allergies, asthma, and immune disorders for members of the communities of Long Island, New York. Dr. Guida was initially awarded his medical degree from St. George’s University School of Medicine. He completed his internship and residency in Pediatrics at Monmouth Medical Center, Long Branch, New Jersey. He went on to complete two fellowships – Cystic Fibrosis (Adult and Pediatric) and Pediatric Pulmonology at Hahnemann University Hospital in Philadelphia, Pennsylvania, and Adult & Pediatric Allergy / Immunology at Nassau County Medical Center in East Meadow, New York.
- Adult & Pediatric Asthma
- Good Samaritan Hospital Medical Center
- St. Charles Hospital
Fellowships & Memberships
- Fellow of The American Academy of Allergy, Asthma and Immunology
- Fellow of The American Academy of Pediatrics
- Fellow of The American College of Allergy, Asthma and Immunology
- Fellow of the American College of Chest Physicians
- New York Allergy Society
- Long Island Allergy Asthma Society
- Cystic Fibrosis Foundation
- American Medical Association
Long Island Allergy Specialists
Team Approach To Allergy & Immunology Care
The allergy, asthma, and immunology team of Heart & Health diagnose, treat, and manage immunologic conditions including allergies, asthma, autoimmune diseases, autoinflammatory syndromes, and immunological deficiency syndromes. Like most patients suffering from allergies, you have probably been searching the internet for an “allergist near me,” contact Heart & Health Medical. Led by renowned Allergist Dr. Louis E. Guida, Jr., the team at Heart and Health Medical is comprised of board-certified Allergists and Immunology specialists and equipped with the most advanced equipment and facilities in Long Island, New York.
Ilyse Raziano, MSN, FNP-C
Board Certified by the American Academy of Nurse Practitioners
Ilyse completed her Bachelor’s Degree of Science in Nursing at Stony Brook University in 2012 and graduated Summa Cum Laude. She worked as a registered nurse at Stony Brook University Hospital for over five years on a busy medicine-telemetry unit as well as a respiratory care and chronic ventilator unit. While working as a nurse, Ilyse went back to school and studied to become a nurse practitioner. In 2017, Ilyse earned her Master’s Degree of Science in Nursing after completing the Family Nurse Practitioner Program at Stony Brook University. Ilyse is board certified by the American Academy of Nurse Practitioners. While pursuing her NP degree, Ilyse completed a clinical rotation in asthma, allergy and immunology and soon discovered that this was her passion. She has been working as a nurse practitioner specializing in allergy, asthma and immunology since 2017. Ilyse treats a wide variety of patients, including but not limited to patients with asthma, environmental allergies, food allergies, eczema, immune deficiencies and other atopic conditions. Ilyse is dedicated to improving her patients’ overall quality of life.
Jacquelyn Guida, BSN, MSN, FNP-BC, PCCN
Board Certified by the American Nurses Credentialing Center
Jacquelyn Guida is a board certified nurse practitioner by the American Nurses Credentialing
Center. Prior to her career as a nurse practitioner, Jacquelyn worked as a registered nurse at
Memorial Sloan Kettering Cancer Center for 5 years and Lehigh Valley Hospital for 1.5 years.
She has experience working on respiratory step-down intensive care, Covid-19 intensive care,
thoracic and esophageal surgical oncology, medical-surgical, and cardio-thoracic step down
units. She is passionate about providing comprehensive, quality, and patient centered care.
Jacquelyn completed her undergraduate program at the University of Scranton and graduate
program at Pace University. She is a member of the American Nurses Association and the
American Association of Critical Care Nurses.
Allergy & Immunology Conditions
Learn More About Allergy Testing & Treatment
- Animal dander
- Insect stings
Common Allergy Symptoms:
- Hay fever
- Itchy, red, watering eyes (conjunctivitis)
- Red skin, cracked and dryness
- Skin Rash
- Sneezing and an itchy, runny or blocked nose (allergic rhinitis)
- Sore Throat
- Stomach pain, feeling sick, vomiting or diarrhea
- Swelling in the lips, tongue, eyes or face
- Wheezing, chest tightness, shortness of breath and a cough