James M. Trefil, DDS
Dentist · Westmont, IL
James M. Trefil, DDS is a dentist with a practice address in Westmont, Illinois, and NPI 1629126446, issued on Jan 8, 2007. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- James M. Trefil
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- Practice location
- 122 East Chicago Ave, Westmont, IL 60559
- Phone
- (630) 971-0761
- Enumerated
- Jan 8, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (630) 971-0772
- Entity
- Type 1 · individual
8 nearest dentist records → All 4,522 in Illinois → Look up another NPI →
Verify James M. Trefil 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
24% more Medicare Part D claims than the average dentist in 2024
107 Medicare Part D claims for 68 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin87 claims
- Clindamycin Hcl11 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.
James M. Trefil among 4,522 dentist records in Illinois
James M. Trefil, 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 2007, is newer than 19% of them.
- NPI issued2007 · 19% of these records are older, 62% 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 · 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).
26 dentist records list a practice address in Westmont
They are 26 of the 814 NPPES records with a practice address in Westmont, and 4,522 dentist records in Illinois.
All 4,522 in Illinois → Every provider in Westmont → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Patrick Blaney, D.D.S.Westmont, IL 605591336261502
- Hwai Yin Chang, DDSWestmont, IL 605591518048081
- Edward Cho, DDSWestmont, IL 605591053479840
- Bindu GulatiWestmont, IL 605591073677993
- Nichol Houston, DMDWestmont, IL 605591326263831
- Ronald Isbell, DDSWestmont, IL 605591952411878
- Kathryn Kennedy, DDSWestmont, IL 605591043325194
- Stephen Lee, D.D.S., PH.D.Westmont, IL 605591497968267
Common questions
What is James M. Trefil, DDS's NPI number?
James M. Trefil, DDS's National Provider Identifier (NPI) is 1629126446, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is James M. Trefil, DDS located?
The NPPES record lists a practice address at 122 East Chicago Ave, Westmont, IL, 60559. Phone: (630) 971-0761. Providers update this record themselves, so call before visiting.
How can I verify James M. Trefil, DDS's license?
Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does James M. Trefil, DDS prescribe under Medicare Part D?
In 2024, James M. Trefil, DDS had 107 Medicare Part D claims for 68 beneficiaries; 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.