William Albert Seper, D.D.S.
General Practice Dentistry · Orland Park, IL
William Albert Seper, D.D.S. is a general practice dentistry with a practice address in Orland Park, Illinois, and NPI 1962584607, issued on Oct 20, 2006. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Albert Seper
- Credential
- D.D.S.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- Practice location
- 9661 W 143RD St, Orland Park, IL 60462
- Phone
- (708) 403-0100
- Enumerated
- Oct 20, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (708) 403-8657
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 5,276 in Illinois → Look up another NPI →
Also registered at 9661 W 143RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniel Wols, D.D.S.General Practice Dentistry1093884991
Verify William Albert Seper 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
84% fewer Medicare Part D claims than the average general practice dentistry in 2024
13 Medicare Part D claims, 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.
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.
William Albert Seper among 5,276 general practice dentistry records in Illinois
William Albert Seper, D.D.S. 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 68% 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).
67 general practice dentistry records list a practice address in Orland Park
They are 67 of the 1,925 NPPES records with a practice address in Orland Park, and 5,276 general practice dentistry records in Illinois.
All 5,276 in Illinois → Every provider in Orland Park → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Alan Davenport, D.D.SOrland Park, IL 604621568549707
- Michael Gorski, DDSOrland Park, IL 604621558447615
- Gary Gunkel, DDSOrland Park, IL 604621669521811
- Josephine Larocca, D.M.D.Orland Park, IL 604621780755942
- James Locicero, D.D.S.Orland Park, IL 604621376638387
- Ronald Myczek, D.D.S.Orland Park, IL 604621841367067
- Dennis Nowak, DDSOrland Park, IL 604621457371148
- Mark Riechman, DDSOrland Park, IL 604621366409997
Common questions
What is William Albert Seper, D.D.S.'s NPI number?
William Albert Seper, D.D.S.'s National Provider Identifier (NPI) is 1962584607, issued on Oct 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Albert Seper, D.D.S. located?
The NPPES record lists a practice address at 9661 W 143RD St, Orland Park, IL, 60462. Phone: (708) 403-0100. Providers update this record themselves, so call before visiting.
How can I verify William Albert Seper, D.D.S.'s license?
Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does William Albert Seper, D.D.S. prescribe under Medicare Part D?
In 2024, William Albert Seper, D.D.S. had 13 Medicare Part D claims; 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.