William B. Sullivan
Listed as an allergist, with a practice address in Hattiesburg, Mississippi.
Practice location 1
Mississippi Asthma and Allergy Clinic PA
109 Millsaps Dr, Suite C
Hattiesburg, MS 39402
From the records
- Specialty
- Allergist
- Records
- Medicare records: allergy/immunology (October 2026).
- Medicare
- May accept the Medicare-approved amount as payment in full (Medicare assignment), according to CMS’s file. This applies to Original Medicare; Medicare Advantage plans have their own networks. What assignment means
- Medical school
- University of Alabama School of Medicine, graduated 1987 (Medicare records)
- NPI
- 1033177894 (national provider registry)
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From CMS’s Doctors and Clinicians file (October 2026) and the national provider registry, NPPES (October 2026). Listings are free and in alphabetical order; we don’t rate or recommend doctors. How we list doctors