Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John Lewis Sinclair Jr., D.D.S.
Dentist in Kalamazoo, MI · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861678906
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Registry record
Entity type Individual (Type 1)
Name Dr. John Lewis Sinclair Jr.
Credential D.D.S.
Sex Male
Practice address 1900 Whites Rd, Suite 4, Kalamazoo, MI, 49008
Phone (269) 344-2652
Fax (269) 344-8002
Enumeration date Jan 19, 2008
Last updated in NPPES Jan 19, 2008
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
What is the NPI number for John Sinclair?
The National Provider Identifier (NPI) for John Sinclair is 1861678906, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Sinclair practice?
The practice location on file with NPPES is in Kalamazoo, MI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Lynn Hyland Oral and Maxillofacial Surgery (Dentist) · Kalamazoo, MI NPI 1013976562 Thomas Owen Pediatric Dentistry · Kalamazoo, MI NPI 1851354120 Comar & Comar PC Periodontics · Kalamazoo, MI NPI 1992730063 Lynn Hyland DDS Pcs PC Oral and Maxillofacial Surgery (Dentist) · Kalamazoo, MI NPI 1275721532 Kalamazoo Pediatric Dentistry Pediatric Dentistry · Kalamazoo, MI NPI 1295146413
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-19.