John D Leff, M D
John D Leff is a Surgery Physician provider (Surgery) practicing in Columbus, OH, registered in the NPPES registry with NPI 1396744140 since 2005. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1396744140 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John D Leff |
| Credential | M D |
| Sex | Male |
| Practice address | 3545 OLENTANGY RIVER RD, SUITE 525, Columbus, OH, 43214 |
| Phone | 6142611900 |
| Fax | 6142617538 |
| Enumeration date | 2005-07-14 |
| Last updated in NPPES | 2021-04-30 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208600000X | Surgery Physician | Primary | 35073410L | OH |
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 |
|---|---|---|---|
| 2245127 | Medicaid | OH | — |
Copy-ready billing details
Provider: John Leff, M D NPI: 1396744140 Taxonomy: 208600000X (Surgery Physician) Address: 3545 OLENTANGY RIVER RD, SUITE 525, Columbus, OH, 43214
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1235135641 | Riverside Pulmonary Associates, Inc | Organization | Specialist | Columbus, OH |
| 1417953332 | Thomas Boes | Individual | Specialist | Columbus, OH |
| 1083611263 | Richard Birnie | Individual | Pharmacist | Columbus, OH |
| 1699774448 | George Kennedy | Individual | Surgery Physician | Columbus, OH |
| 1205835063 | Robert Toscano | Individual | Surgery Physician | Columbus, OH |
| 1275532038 | Oscar Ruiz | Individual | Surgery Physician | Columbus, OH |
| 1750380598 | Philip Taylor | Individual | Surgery Physician | Columbus, OH |
| 1861484172 | Nancy Forman | Individual | Psychologist | Columbus, OH |
Verify this record
Cross-check NPI 1396744140 against the authoritative CMS record: view John D Leff 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
What specialty is John Leff?
Is this the official NPI registry?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2021-04-30.