Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
James S Leaman, DDS
Dentist in Oconomowoc, WI · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1306970264
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Registry record
Entity type Individual (Type 1)
Name James S Leaman
Credential DDS
Sex Male
Practice address 820 Summit Ave, Oconomowoc, WI, 53066
Phone (262) 567-4466
Fax (262) 567-5957
Enumeration date Mar 15, 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
What is the NPI number for James Leaman?
The National Provider Identifier (NPI) for James Leaman is 1306970264, a Type 1 (individual) record in the CMS NPPES registry.
Where does James Leaman practice?
The practice location on file with NPPES is in Oconomowoc, WI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Dale Johnson Family Medicine Physician · Oconomowoc, WI NPI 1447211404 Drs. Leaman, Setnicar & Piacsek, S.C. General Practice Dentistry · Oconomowoc, WI NPI 1952357212 Joseph Setnicar Dentist · Oconomowoc, WI NPI 1093849804 Stacie Piacsek Dentist · Oconomowoc, WI NPI 1366576159 Kristen Vento Family Medicine Physician · Oconomowoc, WI NPI 1225205255 Prohealth Medical Group Inc Family Medicine Physician · Oconomowoc, WI NPI 1386897965 Edp of Wisconsin, Sc Dental Clinic/Center · Oconomowoc, WI NPI 1033671912
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.