John Delvecchio, MD
Internal Medicine Physician · Greenwich, CT
John Delvecchio, MD is an internal medicine physician with a practice address in Greenwich, Connecticut, and NPI 1619990868, issued on Jul 26, 2006. Check the license (Connecticut 037596, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John Delvecchio
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 037596 CT
Self-reported in NPPES; status is on the state search - Practice location
- 75 Holly Hill LN, Greenwich, CT 06830
- Phone
- (203) 863-3400
- Enumerated
- Jul 26, 2006
- Record last updated
- Jun 25, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (203) 863-4781
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 75 Holly Hill LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Steven BennettProfessional Counselor1174048748
- Nicholas Browning, M.D.Internal Medicine Physician1003095050
- Michael Carney, DPTPhysical Therapist1649031337
- Danielle CheryRegistered Nurse1730995325
- Seagda CoyleMarriage & Family Therapist1942041108
Verify John Delvecchio in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 037596Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average internal medicine physician in 2024
434 Medicare Part D claims for 30 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Buprenorphine-Naloxone154 claims
- Suboxone33 claims
- Dextroamphetamine-Amphet Er26 claims
- Sublocade20 claims
- Clonazepam17 claims
- Trazodone Hcl16 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.
John Delvecchio among 2,623 internal medicine physician records in Connecticut
John Delvecchio, MD is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 52% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2010 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
54 internal medicine physician records list a practice address in Greenwich
They are 54 of the 1,184 NPPES records with a practice address in Greenwich, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Greenwich → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Anthony Alleva, MDGreenwich, CT 068301518938778
- Joseph Andrews, M.D.Greenwich, CT 068301740280411
- Allen Chodock, MDGreenwich, CT 068301811928138
- Stephen Jones, M.D.Greenwich, CT 068301174547038
- Ellika Mardh, M.D.Greenwich, CT 068301235150145
- Mohammad Reza Moienafshari, M.D.Greenwich, CT 068301154396893
- Marcelyn Molloy, MDGreenwich, CT 068301053301358
- Donna Phanumas, M.D.Greenwich, CT 068301255352167
Common questions
What is John Delvecchio, MD's NPI number?
John Delvecchio, MD's National Provider Identifier (NPI) is 1619990868, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Delvecchio, MD located?
The NPPES record lists a practice address at 75 Holly Hill LN, Greenwich, CT, 06830. Phone: (203) 863-3400. Providers update this record themselves, so call before visiting.
How can I verify John Delvecchio, MD's license?
NPPES lists Connecticut license number 037596, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Delvecchio, MD prescribe under Medicare Part D?
In 2024, John Delvecchio, MD had 434 Medicare Part D claims for 30 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.