William E. Kergosien, M.D.
Family Medicine Physician · Bay St Louis, MS
William E. Kergosien, M.D. is a family medicine physician with a practice address in Bay St Louis, Mississippi, and NPI 1730109018, issued on Jul 20, 2006. Check the license (Mississippi 12138, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- William E. Kergosien
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 12138 MS
Self-reported in NPPES; status is on the state search - Practice location
- 109 Carroll Ave, Bay St Louis, MS 39520
- Phone
- (228) 467-6733
- Enumerated
- Jul 20, 2006
- Record last updated
- Jan 7, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 00019189 MS
- Medicare enrollment
- Enrolled (PECOS I20081009000436); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,165 in Mississippi → Look up another NPI →
Verify William E. Kergosien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license 12138Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average family medicine physician in 2024
246 Medicare Part D claims for 184 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 58 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen41 claims
- Amoxicillin18 claims
- Sulfamethoxazole-Trimethoprim17 claims
- Ondansetron Hcl16 claims
- Tramadol Hcl14 claims
- Ciprofloxacin Hcl11 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.
Bills Medicare through one group practice
- Concordia Parish Hospital Service District Number OneFerriday, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William E. Kergosien among 1,165 family medicine physician records in Mississippi
William E. Kergosien, M.D. is one of 1,165 family medicine physician records with a practice address in Mississippi. 79% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 48% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1998 · median 2003 among the 748 with a school on file
- Record last updated2013 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 family medicine physician records list a practice address in Bay St Louis
They are 7 of the 103 NPPES records with a practice address in Bay St Louis, and 1,165 family medicine physician records in Mississippi.
All 1,165 in Mississippi → Every provider in Bay St Louis → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Sahiba Ahluwalia, MDBay St Louis, MS 395201962856419
- Bertin Chevis, M.D.Bay St Louis, MS 395201649228529
- Sidney Chevis, MDBay St Louis, MS 395201619080397
- Jessica Douglas, MDBay St Louis, MS 395201194188722
- Tessa Helsel, DOBay St Louis, MS 395201316567415
- Christopher Jones, M.D.Bay St Louis, MS 395201609076124
- Erin Dewitt, M.D.Diamondhead, MS 395251508942137
- Bita Ghaffari, M.D.Diamondhead, MS 395251568423697
Common questions
What is William E. Kergosien, M.D.'s NPI number?
William E. Kergosien, M.D.'s National Provider Identifier (NPI) is 1730109018, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William E. Kergosien, M.D. located?
The NPPES record lists a practice address at 109 Carroll Ave, Bay St Louis, MS, 39520. Phone: (228) 467-6733. Providers update this record themselves, so call before visiting.
How can I verify William E. Kergosien, M.D.'s license?
NPPES lists Mississippi license number 12138, as entered by the provider. Search the Mississippi State Board of Medical Licensure at https://www.msbml.ms.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William E. Kergosien, M.D. prescribe under Medicare Part D?
In 2024, William E. Kergosien, M.D. had 246 Medicare Part D claims for 184 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.