Irwin Nash, MD
Irwin Nash is a Anatomic Pathology & Clinical Pathology Physician provider (Pathology) practicing in New Haven, CT, registered in the NPPES registry with NPI 1437160751 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1437160751 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Irwin Nash |
| Credential | MD |
| Sex | Male |
| Practice address | 1450 CHAPEL ST, New Haven, CT, 06511 |
| Phone | 2037893088 |
| Fax | 2037893068 |
| Enumeration date | 2006-08-11 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207ZP0102X | Anatomic Pathology & Clinical Pathology Physician | Primary | 015015 | CT |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Copy-ready billing details
Provider: Irwin Nash, MD NPI: 1437160751 Taxonomy: 207ZP0102X (Anatomic Pathology & Clinical Pathology Physician) Address: 1450 CHAPEL ST, New Haven, CT, 06511
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1649272949 | Bhupesh Mangla | Individual | Internal Medicine Physician | New Haven, CT |
| 1003813155 | Carola Marte | Individual | Internal Medicine Physician | New Haven, CT |
| 1548269624 | Hospital of Saint Raphael | Organization | General Acute Care Hospital | New Haven, CT |
| 1437159043 | Kerrilene Sinapi | Individual | Emergency Medicine Physician | New Haven, CT |
| 1245230267 | Teresa Seo | Individual | Pharmacist | New Haven, CT |
| 1184626681 | William Kohlhepp | Individual | Physician Assistant | New Haven, CT |
| 1477545713 | Helmuth Gahbauer | Individual | Diagnostic Radiology Physician | New Haven, CT |
| 1821080169 | Paul Levesque | Individual | Diagnostic Radiology Physician | New Haven, CT |
Verify this record
Cross-check NPI 1437160751 against the authoritative CMS record: view Irwin Nash on the official NPPES registry .
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. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.