Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. William Bruns Sullivan
Specialist in Hattiesburg, MS · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1033177894
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Registry record
Entity type Individual (Type 1)
Name Dr. William Bruns Sullivan
Sex Male
Practice address 109 Millsaps Dr, Suite C, Hattiesburg, MS, 39402
Phone (601) 268-5051
Fax (601) 268-5054
Enumeration date May 2, 2006
Last updated in NPPES May 8, 2013
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00118398 | Medicaid | MS | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for William Sullivan?
The National Provider Identifier (NPI) for William Sullivan is 1033177894, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Sullivan practice?
The practice location on file with NPPES is in Hattiesburg, MS. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-08.