William Bruns Sullivan
Specialist · Hattiesburg, MS
William Bruns Sullivan is a specialist with a practice address in Hattiesburg, Mississippi, and NPI 1033177894, issued on May 2, 2006. Check the license (Mississippi 12999, as entered in NPPES) with the Mississippi board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Bruns Sullivan
- Primary taxonomy
- Specialist 174400000X
- License number
- 12999 MS
Self-reported in NPPES; status is on the state search - Practice location
- 109 Millsaps Dr, Hattiesburg, MS 39402
- Phone
- (601) 268-5051
- Enumerated
- May 2, 2006
- Record last updated
- May 8, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (601) 268-5054
- Medicaid ID
- 00118398 MS
- Medicare enrollment
- Enrolled (PECOS I20120208000268); may accept Medicare assignment
- Medical or professional school
- University Of Alabama School Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest specialist records → All 220 in Mississippi → Look up another NPI →
Also registered at 109 Millsaps Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Fitzpatrick, MDOphthalmology Physician1700440930
- Arthur Fokakis, M.D.Specialist1235197096
- Wright Lauten, MDRetina Specialist (Ophthalmology) Physician1174781231
- Cole Richardson, DOOphthalmology Physician1487148243
Verify William Bruns Sullivan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Mississippi board licenses this profession
Search for license 12999Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average specialist in 2024
594 Medicare Part D claims for 68 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims.
Most prescribed
- Montelukast Sodium98 claims
- Fluticasone Propionate79 claims
- Albuterol Sulfate Hfa57 claims
- Prednisone44 claims
- Azithromycin27 claims
- Trelegy Ellipta26 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 78 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,760.68
81 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Mississippi Asthma And Allergy Clinic PAHattiesburg, MS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Bruns Sullivan among 220 specialist records in Mississippi
William Bruns Sullivan is one of 220 specialist records with a practice address in Mississippi. 36% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 44% newer
- In a Medicare fileYes · 36% of these records are
- In the CMS Doctors and Clinicians fileYes · 27% of these records are
- Graduated1987 · median 1991 among the 60 with a school on file
- Record last updated2013 · 89% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in Mississippi
There are 220 specialist records in Mississippi.
All 220 in Mississippi → Every provider in Hattiesburg → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Deborah Azar, M. D.Hattiesburg, MS 394021851471270
- Charles Brent, MDHattiesburg, MS 394021063513141
- Arthur Fokakis, M.D.Hattiesburg, MS 394021235197096
- Cynthia Rouse, CFNPHattiesburg, MS 394021245331859
- Ava Bell, MDHattiesburg, MS 394011467543611
- Julie Falla, OTHattiesburg, MS 394011467537449
- David Lee, MDHattiesburg, MS 394011316048911
- John McCann, M.D.Hattiesburg, MS 394011700115557
Common questions
What is William Bruns Sullivan's NPI number?
William Bruns Sullivan's National Provider Identifier (NPI) is 1033177894, issued on May 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Bruns Sullivan located?
The NPPES record lists a practice address at 109 Millsaps Dr, Hattiesburg, MS, 39402. Phone: (601) 268-5051. Providers update this record themselves, so call before visiting.
How can I verify William Bruns Sullivan's license?
NPPES lists Mississippi license number 12999, as entered by the provider. Search the Mississippi board that licenses this profession; the NPPES record confirms identity only.
How much does William Bruns Sullivan prescribe under Medicare Part D?
In 2024, William Bruns Sullivan had 594 Medicare Part D claims for 68 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is William Bruns Sullivan's MIPS final score?
The 2023 MIPS final score is 78 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.