Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Robert Stephen Sadler
Pharmacist in Salem, MA · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659654333
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Registry record
Entity type Individual (Type 1)
Name Robert Stephen Sadler
Sex Male
Practice address 59 Boston St, Salem, MA, 01970
Phone (978) 745-6756
Enumeration date Sep 20, 2011
Last updated in NPPES Sep 20, 2011
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
Where does Robert Sadler practice?
The practice location on file with NPPES is in Salem, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Robert Sadler?
The National Provider Identifier (NPI) for Robert Sadler is 1659654333, 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 2011-09-20.