Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. William David Nigl, DDS
Dentist in Saginaw, MI · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861613135
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Registry record
Entity type Individual (Type 1)
Name Dr. William David Nigl
Credential DDS
Sex Male
Practice address 4300 State St, Saginaw, MI, 48603
Phone (989) 799-6140
Fax (989) 799-3241
Enumeration date May 2, 2007
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
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
Where does William Nigl practice?
The practice location on file with NPPES is in Saginaw, MI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for William Nigl?
The National Provider Identifier (NPI) for William Nigl is 1861613135, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.