Irwin H. Koff, MD
Irwin H. Koff is a General Practice Physician provider (General Practice) practicing in Honolulu, HI, registered in the NPPES registry with NPI 1649353517 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1649353517 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Irwin H. Koff |
| Credential | MD |
| Sex | Male |
| Practice address | 915 N KING ST, Honolulu, HI, 96817 |
| Phone | 8088481438 |
| Enumeration date | 2006-10-23 |
| Last updated in NPPES | 2015-04-15 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208D00000X | General Practice Physician | Primary | MD-2352 | HI |
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 |
|---|---|---|---|
| 00X0038302 | Other | HI | HMSA BILLING NUMBER |
| 034682-01 | Medicaid | HI | — |
Copy-ready billing details
Provider: Irwin Koff, MD NPI: 1649353517 Taxonomy: 208D00000X (General Practice Physician) Address: 915 N KING ST, Honolulu, HI, 96817
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1881687044 | Susanna Westbrook | Individual | Midwife | Honolulu, HI |
| 1023088937 | Chen Yen Wang | Individual | Adult Health Nurse Practitioner | Honolulu, HI |
| 1467418624 | Christine Nguyen | Individual | Family Nurse Practitioner | Honolulu, HI |
| 1457304966 | Kalihi Palama Health Center | Organization | Federally Qualified Health Center (FQHC) | Honolulu, HI |
| 1013933712 | Robert Koerner | Individual | Internal Medicine Physician | Honolulu, HI |
| 1790703197 | Jesus Lucas | Individual | Family Medicine Physician | Honolulu, HI |
| 1184644668 | Blandina Mamaclay | Individual | Pediatric Nurse Practitioner | Honolulu, HI |
| 1619997475 | Joanne Amberg | Individual | Obstetrics & Gynecology Nurse Practitioner | Honolulu, HI |
Verify this record
Cross-check NPI 1649353517 against the authoritative CMS record: view Irwin H. Koff 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 2015-04-15.