Joel S. Zaretzky, M.D.
Internal Medicine Physician · Ansonia, CT
Joel S. Zaretzky, M.D. is an internal medicine physician with a practice address in Ansonia, Connecticut, and NPI 1285621433, issued on Oct 3, 2005. Check the license (Connecticut 19620, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Joel S. Zaretzky
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 19620 CT
Self-reported in NPPES; status is on the state search - Practice location
- 199 Wakelee Ave, Ansonia, CT 06401
- Phone
- (203) 735-5444
- Enumerated
- Oct 3, 2005
- Record last updated
- Oct 2, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (203) 735-1469
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Verify Joel S. Zaretzky in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 19620Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
70 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Esomeprazole Magnesium12 claims
- Losartan Potassium12 claims
- Oxybutynin Chloride12 claims
- Diltiazem 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.
Joel S. Zaretzky among 2,623 internal medicine physician records in Connecticut
Joel S. Zaretzky, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2007 · 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).
10 internal medicine physician records list a practice address in Ansonia
They are 10 of the 203 NPPES records with a practice address in Ansonia, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Ansonia → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Veronica Balbuena Hurtado, MDAnsonia, CT 064011700522703
- Unknown Bilori, M.D.Ansonia, CT 064011760762090
- Bruce Brennan, MDAnsonia, CT 064011013927797
- Aisha Khan, MDAnsonia, CT 064011265939540
- David Marks, M.D.Ansonia, CT 064011841486149
- Fiona Marlow, M.D.Ansonia, CT 064011194392894
- Muhammad Qadir, M.D.Ansonia, CT 064011356340319
- Ian Schein, MDAnsonia, CT 064011386663243
Common questions
What is Joel S. Zaretzky, M.D.'s NPI number?
Joel S. Zaretzky, M.D.'s National Provider Identifier (NPI) is 1285621433, issued on Oct 3, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Joel S. Zaretzky, M.D. located?
The NPPES record lists a practice address at 199 Wakelee Ave, Ansonia, CT, 06401. Phone: (203) 735-5444. Providers update this record themselves, so call before visiting.
How can I verify Joel S. Zaretzky, M.D.'s license?
NPPES lists Connecticut license number 19620, 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 Joel S. Zaretzky, M.D. prescribe under Medicare Part D?
In 2024, Joel S. Zaretzky, M.D. had 70 Medicare Part D claims; 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.