William Preston Sonnier, M.D.
Gastroenterology Physician · Mobile, AL
William Preston Sonnier, M.D. is a gastroenterology physician with a practice address in Mobile, Alabama, and NPI 1386089001, issued on May 8, 2013. Check the license (Alabama 33522, as entered in NPPES) on the Alabama Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William Preston Sonnier
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 33522 AL
Self-reported in NPPES; status is on the state search - Practice location
- 2451 Fillingim St, Mobile, AL 36617
- Phone
- (251) 471-7891
- Enumerated
- May 8, 2013
- Record last updated
- May 31, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (251) 470-1291
- Medicare enrollment
- Enrolled (PECOS I20181119003331); accepts Medicare assignment
- Medical or professional school
- University Of South Alabama College Of Medicine, 2013
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 232 in Alabama → Look up another NPI →
Also registered at 2451 Fillingim St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dalia Abdel -Azim, MD, PHDAnatomic Pathology & Clinical Pathology Physician1659641801
- Bernard Abi-Saleh, MDSpecialist1215000310
- Ronald Allison, MDPulmonary Disease Physician1316996861
- Michael Ambrose, MDEmergency Medicine Physician1427023696
- Paul Anderson, MDDiagnostic Radiology Physician1578512901
- Yvette AustinPharmacist1457561813
Verify William Preston Sonnier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersAlabama Board of Medical Examiners
Search for license 33522Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% more Medicare Part D claims than the average gastroenterology physician in 2024
843 Medicare Part D claims for 134 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 56% of claims.
Most prescribed
- Stelara90 claims
- Humira(Cf) Pen63 claims
- Sodium Chloride59 claims
- Entyvio47 claims
- Sod Sulf-Potass Sulf-Mag Sulf42 claims
- Pantoprazole Sodium41 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): 96.6 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: $55,660.09
112 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- USA Health Physician Billing Services LLCMobile, AL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Preston Sonnier among 232 gastroenterology physician records in Alabama
William Preston Sonnier, M.D. is one of 232 gastroenterology physician records with a practice address in Alabama. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 78% of them.
- NPI issued2013 · 78% of these records are older, 20% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2013 · median 2000 among the 161 with a school on file
- Record last updated2019 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Alabama practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Alabama
There are 232 gastroenterology physician records in Alabama.
All 232 in Alabama → Every provider in Mobile → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Anas AljabiMobile, AL 366171558083881
- Kaitlyn Cronk, MDMobile, AL 366171821737214
- Jessica Woodham, DOMobile, AL 366171124601810
- Mason Adams, M.D.Mobile, AL 366081770979882
- Cody BarnettMobile, AL 366081477642890
- Baret Bercier, MDMobile, AL 366081164819231
- William Case, MDMobile, AL 366081235161498
- Panayiotis Grevenitis, M.D.Mobile, AL 366081073834792
Common questions
What is William Preston Sonnier, M.D.'s NPI number?
William Preston Sonnier, M.D.'s National Provider Identifier (NPI) is 1386089001, issued on May 8, 2013. An NPI identifies a provider in billing; it is not a license.
Where is William Preston Sonnier, M.D. located?
The NPPES record lists a practice address at 2451 Fillingim St, Mobile, AL, 36617. Phone: (251) 471-7891. Providers update this record themselves, so call before visiting.
How can I verify William Preston Sonnier, M.D.'s license?
NPPES lists Alabama license number 33522, as entered by the provider. Search the Alabama Board of Medical Examiners at https://www.albme.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Preston Sonnier, M.D. prescribe under Medicare Part D?
In 2024, William Preston Sonnier, M.D. had 843 Medicare Part D claims for 134 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is William Preston Sonnier, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.6 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.