Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Jacob Zamstein, M.D.
Urology Physician in Hartford, CT · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1619969094
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Registry record
Entity type Individual (Type 1)
Name Dr. Jacob Zamstein
Credential M.D.
Sex Male
Practice address 19 Woodland St Ste 23, Hartford, CT, 06105
Phone (860) 522-2251
Enumeration date Aug 22, 2005
Last updated in NPPES Jun 24, 2021
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 004198083 | Medicaid | CT | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
How do I verify Jacob Zamstein's NPI record?
Cross-check NPI 1619969094 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1619969094 active?
Yes, as of the latest NPPES snapshot, NPI 1619969094 is active (record last updated 2021-06-24).
Other providers at this practice address
Browse all → Sandra Palmer Nurse Practitioner · Hartford, CT NPI 1316931249 Ephraim Wakszul Physician Assistant · Hartford, CT NPI 1528471687 Shanta Shepherd Urology Physician · Hartford, CT NPI 1174986756 Aaron Turnquist Urology Physician · Hartford, CT NPI 1649776345 Jeremy Baker Medical Physician Assistant · Hartford, CT NPI 1295373785
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-24.