WS
Accepting patients
Who is Dr. Sullivan, Specialist in Hattiesburg, MS?
Dr. William Sullivan is a Specialist, who primarily practices in Hattiesburg, MS. He is board certified. Dr. Sullivan graduated from University of Alabama School of Medicine and completed his residency at Lsu Hlth Sci Ctr-Univ Hosp, Allergy And Immunology; Univ Tn Med Ctr, Anesthesiology; Le Bonheur Children'S M C, Pediatrics. Dr. Sullivan is fluent in English, and is currently seeing new patients. Dr. Sullivan’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Sullivan’s office at (601) 268-5051.
Where did Dr. Sullivan go to medical school and complete their residency?
Residency: Lsu Hlth Sci Ctr-Univ Hosp, Allergy And Immunology; Univ Tn Med Ctr, Anesthesiology; Le Bonheur Children'S M C, Pediatrics | LSU HEALTH SCIENCES
Medical School: University of Alabama School of Medicine
Is Dr. Sullivan board certified as a Specialist?
Yes, Dr. William Sullivan is board certified by the American Board of Allergy and Immunology , American Board of Pediatrics
What languages does Dr. Sullivan speak?
Dr. Sullivan and their clinical team can communicate with patients in the following languages:
English
What conditions does a Specialist like Dr. Sullivan typically treat?
As a Specialist, Dr. Sullivan diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Sullivan. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Allergic Rhinitis
- Allergy
- Nasal allergy
- Chronic allergy symptoms
- Allergic reactions
ICD-10 Codes:
- J3089: Other allergic rhinitis
Also known as:
- Hay Fever
- Pollen allergy
- Seasonal allergies
- Allergic rhinitis
ICD-10 Codes:
- J301: Allergic rhinitis due to pollen
Also known as:
- Moderate Persistent Asthma
- Mild Persistent Asthma
- Asthma
- Ongoing Moderate Asthma
- Regular Moderate Asthma
- Chronic Moderate Asthma
- Ongoing Mild Asthma
- Regular Mild Asthma
- Chronic Mild Asthma
ICD-10 Codes:
- J4540: Moderate persistent asthma, uncomplicated
- J4530: Mild persistent asthma, uncomplicated
Does Dr. Sullivan accept my insurance?
Dr. Sullivan accepts most major insurance plans. Important: Please call our office at (601) 268-5051 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Sullivan accept in Hattiesburg, MS?
Dr. Sullivan in Hattiesburg, MS accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Blue Cross Blue Shield of Mississippi
Centene Corporation
Cigna Group
Federal government of the United States
Medicare
Molina Healthcare
State of Mississippi
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Sullivan's office located?
Dr. William Sullivan's Primary Practice
109 Millsaps Dr Ste C
Hattiesburg, MS 39402
(601) 268-5051
What is Dr. Sullivan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Sullivan's National Provider Identifier (NPI) number is 1033177894.
What common questions do patients ask about Dr. Sullivan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Sullivan
What is Dr. William Sullivan's specialty?
Dr. Sullivan is a Specialist near Hattiesburg, MS.
Is this Dr. William Sullivan affiliated with a ranked Castle Connolly Top Hospital?
No, Sullivan is not affiliated with a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see a Specialist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Specialist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is William Sullivan accepting new patients in Hattiesburg, MS?
Yes, Dr. William Sullivan is accepting new patients at this time.
Does Dr. William Sullivan offer online booking?
Please contact Dr. Sullivan's office at (601) 268-5051 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with William Sullivan?
Please contact Dr. Sullivan's office at (601) 268-5051 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. William Sullivan have?
Dr. William Sullivan is certified by the American Board of Allergy and Immunology and American Board of Pediatrics.
Other Specialist Near Hattiesburg, MS
DN
Specialist
Dr. David Nathan, MD is a Specialist, who primarily practices in Hattiesburg, MS with 1 additional practice location. He has been practicing for over 22 years and is board certified.
Hattiesburg, MS

Diagnostic Radiologist
Dr. Joanna Costello, MD is a Diagnostic Radiologist, who primarily practices in Hattiesburg, MS. She has been practicing for over 34 years and is board certified.
Hattiesburg, MS
JB
Specialist
Dr. John Bumgardner is a Specialist, who primarily practices in Petal, MS with 1 additional practice location.
Petal, MS