Dr. Hal C. Byck, MD
Dr. Hal C. Byck is a General Practice Physician provider (General Practice) practicing in Wilmington, DE, registered in the NPPES registry with NPI 1659477131 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1659477131 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Hal C. Byck |
| Credential | MD |
| Sex | Male |
| Practice address | NEMOURS PEDIATRICS JESSUP ST., 1602 JESSUP STREET, Wilmington, DE, 19802 |
| Phone | 3025765050 |
| Fax | 3025765065 |
| Enumeration date | 2006-09-15 |
| Last updated in NPPES | 2012-01-06 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208000000X | Pediatrics Physician | Secondary | C10003946 | DE |
| 208D00000X | General Practice Physician | Primary | C10003946 | DE |
| 208M00000X | Hospitalist Physician | Secondary | C10003946 | DE |
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 |
|---|---|---|---|
| 5607400 | Medicaid | NJ | — |
| 6704204 | Medicaid | VA | — |
| 001447101 | Medicaid | PA | — |
| 4423030 | Medicaid | DC | — |
| 1484311 | Medicaid | MD | — |
Copy-ready billing details
Provider: Hal Byck, MD NPI: 1659477131 Taxonomy: 208D00000X (General Practice Physician) Address: NEMOURS PEDIATRICS JESSUP ST., 1602 JESSUP STREET, Wilmington, DE, 19802
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1396836771 | Colleen Witherell | Individual | General Practice Physician | Wilmington, DE |
| 1972693612 | Laurie Cooke | Individual | General Practice Physician | Wilmington, DE |
| 1578693958 | Gina Amoroso | Individual | General Practice Physician | Wilmington, DE |
Verify this record
Cross-check NPI 1659477131 against the authoritative CMS record: view Dr. Hal C. Byck 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
Is this the official NPI registry?
What specialty is Hal Byck?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2012-01-06.