Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary C Nathan
Counselor in Buffalo, NY · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1700920378
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Registry record
Entity type Individual (Type 1)
Name Mary C Nathan
Sex Female
Practice address 463 William St, Buffalo, NY, 14204
Phone (716) 858-0383
Enumeration date Feb 16, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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 Mary Nathan?
The National Provider Identifier (NPI) for Mary Nathan is 1700920378, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Nathan practice?
The practice location on file with NPPES is in Buffalo, NY. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Vinette Brown Mental Health Counselor · Buffalo, NY NPI 1679617237 Wendy Ehrenfeld Counselor · Buffalo, NY NPI 1740324326 Earnest Donalson Counselor · Buffalo, NY NPI 1689718256 Summer Rubeck Mental Health Counselor · Buffalo, NY NPI 1780711143 Kristin Mcginley Counselor · Buffalo, NY NPI 1801080205 Kim Jones Social Worker · Buffalo, NY NPI 1992963532 Mary Miller Counselor · Buffalo, NY NPI 1932354172 Denise Abbey Registered Nurse · Buffalo, NY NPI 1649418716
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.