William Sommers, D.O.
Specialist · Wilmington, DE
William Sommers, D.O. is a specialist with a practice address in Wilmington, Delaware, and NPI 1740210830, issued on Jul 4, 2006. Check the license (Delaware C20002717, as entered in NPPES) with the Delaware board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Sommers
- Credential
- D.O.
- Primary taxonomy
- Specialist 174400000X
- License number
- C20002717 DE
Self-reported in NPPES; status is on the state search - Practice location
- 701 N. Clayton Street, Wilmington, DE 19805
- Phone
- (302) 892-9400
- Enumerated
- Jul 4, 2006
- Record last updated
- Jul 31, 2025
- Fax
- (302) 892-9407
- Medicaid ID
- 023203 DE
- Medicare enrollment
- Enrolled (PECOS I20110420000454); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 1982
- Entity
- Type 1 · individual
8 nearest specialist records → All 133 in Delaware → Look up another NPI →
Also registered at 701 N. Clayton Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aaron Weaver, D.OFamily Medicine Physician1659735850
Verify William Sommers in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Delaware board licenses this profession
Search for license C20002717Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average specialist in 2024
373 Medicare Part D claims for 104 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 28 claims were for opioids.
Most prescribed
- Carbidopa-Levodopa31 claims
- Gabapentin31 claims
- Propranolol Hcl Er26 claims
- Topiramate23 claims
- Donepezil Hcl22 claims
- Levetiracetam22 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): 77.4 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: $221.19
2 payments; by number, the most common kind was food and beverage; the largest payer was Teva Pharmaceuticals USA, 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.
William Sommers among 133 specialist records in Delaware
William Sommers, D.O. is one of 133 specialist records with a practice address in Delaware. 32% 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 15% of them.
- NPI issued2006 · 15% of these records are older, 53% newer
- In a Medicare fileYes · 32% of these records are
- In the CMS Doctors and Clinicians fileYes · 22% of these records are
- Graduated1982 · median 1990 among the 29 with a school on file
- Record last updated2025 · 88% 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 Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in Delaware
There are 133 specialist records in Delaware.
All 133 in Delaware → Every provider in Wilmington → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Kimberly LewisWilmington, DE 198051194810192
- Diana Dickson-Witmer, M.D.Wilmington, DE 198061932189131
- Errol Ger, MDWilmington, DE 198061528007994
- Frederick Gooding, M.D.Wilmington, DE 198061255377180
- Satoshi Ikeda, M.D.Wilmington, DE 198061699772426
- Kevin McKenzie, LAT, LPTAWilmington, DE 198061275678732
- Nadiv Shapira, MDWilmington, DE 198061437375722
- Augusto Amurao, M.D.Wilmington, DE 198031346249042
Common questions
What is William Sommers, D.O.'s NPI number?
William Sommers, D.O.'s National Provider Identifier (NPI) is 1740210830, issued on Jul 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Sommers, D.O. located?
The NPPES record lists a practice address at 701 N. Clayton Street, Wilmington, DE, 19805. Phone: (302) 892-9400. Providers update this record themselves, so call before visiting.
How can I verify William Sommers, D.O.'s license?
NPPES lists Delaware license number C20002717, as entered by the provider. Search the Delaware board that licenses this profession; the NPPES record confirms identity only.
How much does William Sommers, D.O. prescribe under Medicare Part D?
In 2024, William Sommers, D.O. had 373 Medicare Part D claims for 104 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is William Sommers, D.O.'s MIPS final score?
The 2023 MIPS final score is 77.4 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.