David A. Oneill, DO
Family Medicine Physician · Belleville, IL
David A. Oneill, DO is a family medicine physician with a practice address in Belleville, Illinois, and NPI 1922092394, issued on Aug 31, 2005. Check the license (Illinois 036095479, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- David A. Oneill
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036095479 IL
Self-reported in NPPES; status is on the state search - Practice location
- 311 W Lincoln St Ste 200, Belleville, IL 62220
- Phone
- (618) 213-7943
- Enumerated
- Aug 31, 2005
- Record last updated
- Aug 16, 2024
- Fax
- (618) 213-7944
- Medicaid ID
- 036095479 IL
- Medicare enrollment
- Enrolled (PECOS I20071128000570); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 311 W Lincoln St Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Wallace Abel, MDFamily Medicine Physician1003808858
- Douglas Despain, MDFamily Medicine Physician1275525024
- Maegan Korte, FNP-CFamily Nurse Practitioner1972903862
- Frances Perkins, PA-CPhysician Assistant1972778710
- James Wade, MDFamily Medicine Physician1386640399
- Melinda Walker, DOFamily Medicine Physician1306838156
Verify David A. Oneill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036095479Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.3 times the Medicare Part D claims of the average family medicine physician in 2024
18,922 Medicare Part D claims for 1,274 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 553 claims were for opioids.
Most prescribed
- Atorvastatin Calcium956 claims
- Amlodipine Besylate932 claims
- Levothyroxine Sodium727 claims
- Losartan Potassium638 claims
- Metoprolol Succinate539 claims
- Montelukast Sodium457 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.
Industry payments in 2024: $823.13
43 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Southern Illinois Health Care Foundation IncEast Saint Louis, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David A. Oneill among 6,215 family medicine physician records in Illinois
David A. Oneill, DO is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1994 · median 2006 among the 3,714 with a school on file
- Record last updated2024 · 54% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
36 family medicine physician records list a practice address in Belleville
They are 36 of the 1,404 NPPES records with a practice address in Belleville, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Belleville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Wallace Abel, MDBelleville, IL 622201003808858
- Sabha Cheema, MDBelleville, IL 622201407110539
- Douglas Despain, MDBelleville, IL 622201275525024
- Armida Hidalgo, M.D.Belleville, IL 622201376863779
- Brett Nance, D.O.Belleville, IL 622201144515610
- Molly Nelsen, D.O.Belleville, IL 622201437243581
- Catherine Noble, M.D.Belleville, IL 622201245331651
- Adam Ruley, M.D.Belleville, IL 622201285921767
Common questions
What is David A. Oneill, DO's NPI number?
David A. Oneill, DO's National Provider Identifier (NPI) is 1922092394, issued on Aug 31, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David A. Oneill, DO located?
The NPPES record lists a practice address at 311 W Lincoln St Ste 200, Belleville, IL, 62220. Phone: (618) 213-7943. Providers update this record themselves, so call before visiting.
How can I verify David A. Oneill, DO's license?
NPPES lists Illinois license number 036095479, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David A. Oneill, DO prescribe under Medicare Part D?
In 2024, David A. Oneill, DO had 18,922 Medicare Part D claims for 1,274 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.