Dr. Jack Eff, M.D.
Dr. Jack Eff is a General Practice Physician provider (General Practice) practicing in Davenport, FL, registered in the NPPES registry with NPI 1902138951 since 2010. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1902138951 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Jack Eff |
| Credential | M.D. |
| Sex | Male |
| Practice address | 1556 CHALLENGER AVE, Davenport, FL, 33897 |
| Phone | 8634206513 |
| Enumeration date | 2010-02-02 |
| Last updated in NPPES | 2026-05-31 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208D00000X | General Practice Physician | Primary | MD043079E | PA |
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: Jack Eff, M.D. NPI: 1902138951 Taxonomy: 208D00000X (General Practice Physician) Address: 1556 CHALLENGER AVE, Davenport, FL, 33897
Verify this record
Cross-check NPI 1902138951 against the authoritative CMS record: view Dr. Jack Eff 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 2026-05-31.