Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Carly Diffenderfer
Behavior Technician in Reston, VA · enumerated 2026.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1801701297
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Registry record
Entity type Individual (Type 1)
Name Carly Diffenderfer
Sex Female
Practice address 12330 Pinecrest Rd Ste 100, Reston, VA, 20191
Phone (571) 592-9580
Enumeration date Aug 18, 2026
Last updated in NPPES Aug 18, 2026
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 Carly Diffenderfer practice?
The practice location on file with NPPES is in Reston, VA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Carly Diffenderfer?
The National Provider Identifier (NPI) for Carly Diffenderfer is 1801701297, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Ashley Coggeshall Behavior Analyst · Reston, VA NPI 1437686961 Leanna Fichetola Behavior Analyst · Reston, VA NPI 1689294977 Maaham Usmani Behavior Analyst · Reston, VA NPI 1548040611 Karma Gurung Behavior Analyst · Reston, VA NPI 1407691090 Treasure Aikens Behavior Technician · Reston, VA NPI 1508771338 Raven Branch Behavior Technician · Reston, VA NPI 1336054196 Katherine Franco Behavior Technician · Reston, VA NPI 1386559789 Ginelle Hardy Behavior Technician · Reston, VA NPI 1407762487
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-18.