Dr. Jonathan Keffer, MD
Dr. Jonathan Keffer is a General Practice Physician provider (General Practice) practicing in Ithaca, NY, registered in the NPPES registry with NPI 1447364633 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1447364633 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Jonathan Keffer |
| Credential | MD |
| Sex | Male |
| Practice address | 110 HO PLZ, Ithaca, NY, 14853 |
| Phone | 6072555155 |
| Enumeration date | 2006-08-18 |
| Last updated in NPPES | 2025-08-31 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208D00000X | General Practice Physician | Primary | 228331 | NY |
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 |
|---|---|---|---|
| LICENSE NUMBER | Other | NY | 228331 |
Copy-ready billing details
Provider: Jonathan Keffer, MD NPI: 1447364633 Taxonomy: 208D00000X (General Practice Physician) Address: 110 HO PLZ, Ithaca, NY, 14853
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1902842024 | Janice Lacey | Individual | Nurse Practitioner | Ithaca, NY |
| 1710079736 | Kent Bullis | Individual | Adolescent Medicine (Family Medicine) Physician | Ithaca, NY |
| 1780752634 | Amy Sucheski-Drake | Individual | Sports Medicine (Family Medicine) Physician | Ithaca, NY |
| 1992900278 | Relford Patterson | Individual | Occupational Medicine Physician | Ithaca, NY |
| 1740518646 | Rachel Clark | Individual | Family Nurse Practitioner | Ithaca, NY |
| 1235486242 | Travis Lefever | Individual | Pharmacist | Ithaca, NY |
| 1396181673 | Leslie Harris | Individual | Licensed Practical Nurse | Ithaca, NY |
| 1144661570 | Yudelka Ivory | Individual | Family Nurse Practitioner | Ithaca, NY |
Verify this record
Cross-check NPI 1447364633 against the authoritative CMS record: view Dr. Jonathan Keffer 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
Where does Jonathan Keffer practice?
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-08-31.