Douglas M. Trepp, D.M.D.
General Practice Dentistry · Greenwich, CT
Douglas M. Trepp, D.M.D. is a general practice dentistry with a practice address in Greenwich, Connecticut, and NPI 1700037231, issued on Oct 2, 2008. Check the license (Connecticut 6340, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Douglas M. Trepp
- Credential
- D.M.D.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 6340 CT
Self-reported in NPPES; status is on the state search - Practice location
- 500 W Putnam Ave, Greenwich, CT 06830
- Phone
- (203) 869-2510
- Enumerated
- Oct 2, 2008
- Record last updated
- Oct 2, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (203) 869-3327
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 1,731 in Connecticut → Look up another NPI →
Also registered at 500 W Putnam Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Clifford Berken, M.D.Gastroenterology Physician1215951173
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- Jessica Dennison, RNPsychiatric/Mental Health Nurse Practitioner1023778537
- Caroline Figgie, MDPediatric Endocrinology Physician1902366420
Verify Douglas M. Trepp in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 6340Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% more Medicare Part D claims than the average general practice dentistry in 2024
101 Medicare Part D claims for 69 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin74 claims
- Clindamycin Hcl12 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.
Industry payments in 2024: $17.93
1 payment: food and beverage; the largest payer was Zimvie Inc. The 41,669 providers of this specialty with any payment received $597.01 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Douglas M. Trepp among 1,731 general practice dentistry records in Connecticut
Douglas M. Trepp, D.M.D. is one of 1,731 general practice dentistry records with a practice address in Connecticut. 63% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 61% of them.
- NPI issued2008 · 61% of these records are older, 34% newer
- In a Medicare fileYes · 63% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2008 · 80% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 general practice dentistry records list a practice address in Greenwich
They are 14 of the 1,184 NPPES records with a practice address in Greenwich, and 1,731 general practice dentistry records in Connecticut.
All 1,731 in Connecticut → Every provider in Greenwich → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Steven Altman, D.M.DGreenwich, CT 068301518206606
- Gerald Cohen, D.D.S.Greenwich, CT 068301831287366
- Judith Cordero, DDSGreenwich, CT 068301730103334
- Michael Gentile, D.D.S.Greenwich, CT 068301457567273
- Thomas Gorman, DDSGreenwich, CT 068301992923494
- Geoffrey Robinson, DDSGreenwich, CT 068301609998665
- Robert Cieri, D.M.D.Georgetown, CT 068291205082096
- Barbara Devine, D.M.D. M.A.G.D.Greenwich, CT 068311295931798
Common questions
What is Douglas M. Trepp, D.M.D.'s NPI number?
Douglas M. Trepp, D.M.D.'s National Provider Identifier (NPI) is 1700037231, issued on Oct 2, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Douglas M. Trepp, D.M.D. located?
The NPPES record lists a practice address at 500 W Putnam Ave, Greenwich, CT, 06830. Phone: (203) 869-2510. Providers update this record themselves, so call before visiting.
How can I verify Douglas M. Trepp, D.M.D.'s license?
NPPES lists Connecticut license number 6340, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Douglas M. Trepp, D.M.D. prescribe under Medicare Part D?
In 2024, Douglas M. Trepp, D.M.D. had 101 Medicare Part D claims for 69 beneficiaries; 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.