Dr. Alexandra Joy Erhardt, DO
Dr. Alexandra Joy Erhardt is a Transplant Surgery Physician provider (Transplant Surgery) practicing in Hackensack, NJ, registered in the NPPES registry with NPI 1861853343 since 2016. The credential DO stands for Doctor of Osteopathic Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1861853343 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Alexandra Joy Erhardt |
| Credential | DO |
| Sex | Female |
| Practice address | 20 PROSPECT AVE, STE 406, Hackensack, NJ, 07601 |
| Phone | 5519962959 |
| Enumeration date | 2016-03-11 |
| Last updated in NPPES | 2026-05-22 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 204F00000X | Transplant Surgery Physician | Primary | 25MB11946000 | NJ |
DO — Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential
Copy-ready billing details
Provider: Alexandra Erhardt, DO NPI: 1861853343 Taxonomy: 204F00000X (Transplant Surgery Physician) Address: 20 PROSPECT AVE, STE 406, Hackensack, NJ, 07601
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1598769317 | William Boss | Individual | Specialist | Hackensack, NJ |
| 1346244159 | Gregory Rauscher | Individual | Specialist | Hackensack, NJ |
| 1366443780 | Gary Schwartz | Individual | Internal Medicine Physician | Hackensack, NJ |
| 1093716219 | Gene Rosenberg | Individual | Urology Physician | Hackensack, NJ |
| 1861487431 | Gunjan Shukla | Individual | Clinical Cardiac Electrophysiology Physician | Hackensack, NJ |
| 1245226059 | Juliann Paolicchi | Individual | Neurology with Special Qualifications in Child Neurology Physician | Hackensack, NJ |
| 1699762658 | Perry Ritota | Individual | Plastic and Reconstructive Surgery Physician | Hackensack, NJ |
| 1013998830 | Epilepsy & Neurophysiology Medical Consultants PA | Organization | Neurology Physician | Hackensack, NJ |
Verify this record
Cross-check NPI 1861853343 against the authoritative CMS record: view Dr. Alexandra Joy Erhardt 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 2026-05-22.