John Thomas Maffeo, DDS
Dentist · Downers Grove, IL
John Thomas Maffeo, DDS is a dentist with a practice address in Downers Grove, Illinois, and NPI 1598834475, issued on Nov 7, 2006. Check the license (Illinois 019017644, as entered in NPPES) with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Thomas Maffeo
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 019017644 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3450 Lacey RD, Downers Grove, IL 60515
- Phone
- (630) 743-4500
- Enumerated
- Nov 7, 2006
- Record last updated
- Mar 8, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (630) 743-4537
- Entity
- Type 1 · individual
8 nearest dentist records → All 4,522 in Illinois → Look up another NPI →
Also registered at 3450 Lacey RD
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Verify John Thomas Maffeo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 019017644Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Thomas Maffeo among 4,522 dentist records in Illinois
John Thomas Maffeo, 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 not. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 81% newer
- In a Medicare fileNo · 64% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2019 · 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).
56 dentist records list a practice address in Downers Grove
They are 56 of the 1,899 NPPES records with a practice address in Downers Grove, and 4,522 dentist records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 4,522 in Illinois → Every provider in Downers Grove → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Sara Banuelos, D.D.SDowners Grove, IL 605151164542429
- Keith Bram, D.D.S.Downers Grove, IL 605151609088418
- William Brennan, DDSDowners Grove, IL 605151235142746
- William Brennan, D.D.S.Downers Grove, IL 605151265501175
- John Keenan, DDSDowners Grove, IL 605151124233218
- Theresa Lao, D.D.S.Downers Grove, IL 605151275684367
- Richard Patelski, DDS MAGDDowners Grove, IL 605151417166968
- Thomas Sarna, DDSDowners Grove, IL 605151760698765
Common questions
What is John Thomas Maffeo, DDS's NPI number?
John Thomas Maffeo, DDS's National Provider Identifier (NPI) is 1598834475, issued on Nov 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Thomas Maffeo, DDS located?
The NPPES record lists a practice address at 3450 Lacey RD, Downers Grove, IL, 60515. Phone: (630) 743-4500. Providers update this record themselves, so call before visiting.
How can I verify John Thomas Maffeo, DDS's license?
NPPES lists Illinois license number 019017644, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity 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. 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.