Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Matthew S Wosnitzer, M.D.
Urology Physician in Fairfield, CT · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1619134269
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Registry record
Entity type Individual (Type 1)
Name Dr. Matthew S Wosnitzer
Credential M.D.
Sex Male
Practice address 425 Post Rd, Suite 204, Fairfield, CT, 06824
Phone (212) 305-0112
Fax (212) 305-0114
Enumeration date May 21, 2008
Last updated in NPPES Oct 12, 2015
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 |
|---|---|---|---|
| 1619134269 | 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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Matthew Wosnitzer?
Matthew Wosnitzer is registered in NPPES with the primary taxonomy of Urology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Gioia Riccio Diagnostic Radiology Physician · Fairfield, CT NPI 1336146802 Paul Berard Hematology & Oncology Physician · Fairfield, CT NPI 1699773804 Edward Grossman Specialist · Fairfield, CT NPI 1629060827 Richard Lopatin Specialist · Fairfield, CT NPI 1598757403 Kenneth Mauer Specialist · Fairfield, CT NPI 1407848310 Julie Spivack Specialist · Fairfield, CT NPI 1316939226 Eddy Castillo Specialist · Fairfield, CT NPI 1225020134 Emil Blanco Specialist · Fairfield, CT NPI 1134111040
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-10-12.