Michael C. Duffy, D.M.D
Dentist · Wilmington, DE
Michael C. Duffy, D.M.D is a dentist with a practice address in Wilmington, Delaware, and NPI 1083922785, issued on Sep 16, 2010. Check the license (Delaware G1-0001157, as entered in NPPES) with the Delaware board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael C. Duffy
- Credential
- D.M.D
- Primary taxonomy
- Dentist 122300000X
- License number
- G1-0001157 DE
Self-reported in NPPES; status is on the state search - Practice location
- 300 Foulk RD Ste 101, Wilmington, DE 19803
- Phone
- (302) 652-3775
- Enumerated
- Sep 16, 2010
- Record last updated
- Sep 16, 2010 (not updated in 16 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest dentist records → All 194 in Delaware → Look up another NPI →
Also registered at 300 Foulk RD Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicholas Russo, D.M.DDentist1407164197
Verify Michael C. Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Delaware board licenses this profession
Search for license G1-0001157Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average dentist in 2024
63 Medicare Part D claims for 48 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin35 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.
Michael C. Duffy among 194 dentist records in Delaware
Michael C. Duffy, D.M.D is one of 194 dentist records with a practice address in Delaware. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 65% of them.
- NPI issued2010 · 65% of these records are older, 32% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2010 · 76% 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 Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
75 dentist records list a practice address in Wilmington
They are 75 of the 6,291 NPPES records with a practice address in Wilmington, and 194 dentist records in Delaware.
All 194 in Delaware → Every provider in Wilmington → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Kert Anzilotti, DMDWilmington, DE 198031215098363
- Richard Bond, DDSWilmington, DE 198031831171701
- Erik Bradley, DDSWilmington, DE 198031710048871
- Richard Carroccia, DMDWilmington, DE 198031740341882
- Karen Conlin, DDSWilmington, DE 198031194820175
- Richard Dantonio, DMDWilmington, DE 198031497973804
- Bruce Fay, DMDWilmington, DE 198031205914652
- David Isaacs, DMDWilmington, DE 198031225114945
Common questions
What is Michael C. Duffy, D.M.D's NPI number?
Michael C. Duffy, D.M.D's National Provider Identifier (NPI) is 1083922785, issued on Sep 16, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Michael C. Duffy, D.M.D located?
The NPPES record lists a practice address at 300 Foulk RD Ste 101, Wilmington, DE, 19803. Phone: (302) 652-3775. Providers update this record themselves, so call before visiting.
How can I verify Michael C. Duffy, D.M.D's license?
NPPES lists Delaware license number G1-0001157, as entered by the provider. Search the Delaware board that licenses this profession; the NPPES record confirms identity only.
How much does Michael C. Duffy, D.M.D prescribe under Medicare Part D?
In 2024, Michael C. Duffy, D.M.D had 63 Medicare Part D claims for 48 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.