Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. William Dennis Hancock Jr., DDS
Dentist in Bloomingdale, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1871607804
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Registry record
Entity type Individual (Type 1)
Name Dr. William Dennis Hancock Jr.
Credential DDS
Sex Male
Practice address 109 Fairfield Way, Suite 204, Bloomingdale, IL, 60108
Phone (630) 351-6699
Fax (630) 351-0083
Enumeration date Aug 18, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees.
About the DDS credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 102217 | Medicaid | IL | - |
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.
Frequently asked questions
What is the NPI number for William Hancock?
The National Provider Identifier (NPI) for William Hancock is 1871607804, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Hancock practice?
The practice location on file with NPPES is in Bloomingdale, IL. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Bloomingdale General Pediatrics Pediatrics Physician · Bloomingdale, IL NPI 1295822120 Jacqueline Thompson-Fernandez General Practice Dentistry · Bloomingdale, IL NPI 1093875171 William D Hancock Jr DDS Sc Dentist · Bloomingdale, IL NPI 1467618173 Princy Shyam Clinical Social Worker · Bloomingdale, IL NPI 1922386093 Lynell Anderson Marriage & Family Therapist · Bloomingdale, IL NPI 1144031170
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.