Stephen Willenborg, DMD
General Practice Dentistry · Effingham, IL
Stephen Willenborg, DMD is a general practice dentistry with a practice address in Effingham, Illinois, and NPI 1770605164, issued on Apr 4, 2007. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stephen Willenborg
- Credential
- DMD
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- Practice location
- 610 N Keller Dr, Effingham, IL 62401
- Phone
- (217) 347-7021
- Enumerated
- Apr 4, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 5,276 in Illinois → Look up another NPI →
Verify Stephen Willenborg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11% fewer Medicare Part D claims than the average general practice dentistry in 2024
74 Medicare Part D claims for 49 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Penicillin V Potassium28 claims
- Amoxicillin25 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.
Stephen Willenborg among 5,276 general practice dentistry records in Illinois
Stephen Willenborg, DMD is one of 5,276 general practice dentistry records with a practice address in Illinois. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 32% of them.
- NPI issued2007 · 32% of these records are older, 43% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 75% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 general practice dentistry records list a practice address in Effingham
They are 9 of the 566 NPPES records with a practice address in Effingham, and 5,276 general practice dentistry records in Illinois.
All 5,276 in Illinois → Every provider in Effingham → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Christopher Balda, D.M.D.Effingham, IL 624011003240540
- Joseph Balda, D.M.D.Effingham, IL 624011942730254
- Van Thuy Bui, D.M.D.Effingham, IL 624011376977819
- Gregory Campos, DMDEffingham, IL 624011508969700
- Charles Horin, D.D.S.Effingham, IL 624011609880491
- Haritha Nallaparaju, DMDEffingham, IL 624011386296606
- Charles Schumacher, D.M.D.Effingham, IL 624011083845457
- Jeffrey Stevenson, D.D.S.Effingham, IL 624011437378098
Common questions
What is Stephen Willenborg, DMD's NPI number?
Stephen Willenborg, DMD's National Provider Identifier (NPI) is 1770605164, issued on Apr 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Willenborg, DMD located?
The NPPES record lists a practice address at 610 N Keller Dr, Effingham, IL, 62401. Phone: (217) 347-7021. Providers update this record themselves, so call before visiting.
How can I verify Stephen Willenborg, DMD's license?
Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Stephen Willenborg, DMD prescribe under Medicare Part D?
In 2024, Stephen Willenborg, DMD had 74 Medicare Part D claims for 49 beneficiaries; the average among general practice dentistry prescribers was 83. 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.