Are you William B. Sullivan? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 109 Millsaps Dr, Suite C, Hattiesburg, MS 39402
About William Sullivan
William B. Sullivan is a specialist based in Hattiesburg, MS. William is a 1987 graduate of University of Alabama School of Medicine. According to Medicare claims data, the services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. The provider's National Provider Identifier (NPI) is 1033177894.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (601) 268-5051
- Email not available
Practice Locations
109 MILLSAPS DR SUITE C
Hattiesburg, MS 39402
Procedures Most Often Billed to Medicare
14 services · 12 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
14 | Less often than most peers in Specialist |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other specialists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other specialists in Hattiesburg 7
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at University of Alabama School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1987 at University of Alabama School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What does William B. Sullivan specialize in?
William B. Sullivan is a specialist in Hattiesburg, MS. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is William B. Sullivan located?
William B. Sullivan is listed at 109 Millsaps Dr Suite C, Hattiesburg, MS 39402. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is William B. Sullivan's phone number?
The number on file is (601) 268-5051. Contact the office directly to confirm availability and scheduling.
NPI registry
What is William B. Sullivan's NPI number?
William B. Sullivan's National Provider Identifier is 1033177894. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did William B. Sullivan train?
William B. Sullivan attended University of Alabama School of Medicine, graduating in 1987. This comes from the CMS National Downloadable File.
CMS public data
How long has William B. Sullivan been practicing?
William B. Sullivan has 39 years experience. Calculated from a graduation year of 1987, reported in the CMS National Downloadable File.
CMS public data
What does William B. Sullivan do most often?
According to Medicare billing data, William B. Sullivan the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has William B. Sullivan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by William B. Sullivan. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.