William Paul Dejean, DDS
Dentist · Chicago, IL
William Paul Dejean, DDS is a dentist with a practice address in Chicago, Illinois, and NPI 1770710857, issued on Jun 16, 2009. Check the license (Illinois 019020647, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Paul Dejean
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 019020647 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1363 N Ashland Ave, Chicago, IL 60622
- Phone
- (773) 384-3885
- Enumerated
- Jun 16, 2009
- Record last updated
- Jun 16, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (773) 384-0445
- Entity
- Type 1 · individual
8 nearest dentist records → All 4,522 in Illinois → Look up another NPI →
Also registered at 1363 N Ashland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jack Geissler, DMDDentist1013751841
Verify William Paul Dejean in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 019020647Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average dentist in 2024
15 Medicare Part D claims, against an average of 86 among the 51,021 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 Paul Dejean among 4,522 dentist records in Illinois
William Paul Dejean, DDS is one of 4,522 dentist 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 2009, is newer than 46% of them.
- NPI issued2009 · 46% of these records are older, 50% 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 updated2009 · 74% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,148 dentist records list a practice address in Chicago
They are 1,148 of the 63,379 NPPES records with a practice address in Chicago, and 4,522 dentist records in Illinois.
All 4,522 in Illinois → Every provider in Chicago → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
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- Meira Berman, DMDChicago, IL 606221992987747
- Margaux Derosset, D.M.DChicago, IL 606221568644201
- Philip Dortch, DDSChicago, IL 606221750426078
- Christine Hryhorczuk, D.D.S.Chicago, IL 606221730395658
- Emily Jones, D.D.SChicago, IL 606221306928023
- Maria Kaakaji, DDSChicago, IL 606221740270156
- Sabah Khalifa, DDSChicago, IL 606221053301465
Common questions
What is William Paul Dejean, DDS's NPI number?
William Paul Dejean, DDS's National Provider Identifier (NPI) is 1770710857, issued on Jun 16, 2009. An NPI identifies a provider in billing; it is not a license.
Where is William Paul Dejean, DDS located?
The NPPES record lists a practice address at 1363 N Ashland Ave, Chicago, IL, 60622. Phone: (773) 384-3885. Providers update this record themselves, so call before visiting.
How can I verify William Paul Dejean, DDS's license?
NPPES lists Illinois license number 019020647, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does William Paul Dejean, DDS prescribe under Medicare Part D?
In 2024, William Paul Dejean, DDS had 15 Medicare Part D claims; the average among dentist prescribers was 86. 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.