Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ryan D. Hartmann, PH.D CLINICAL PSYCHO
Clinical Psychologist in Avon, CT · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1649321258
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Ryan D. Hartmann
Credential PH.D CLINICAL PSYCHO
Sex Male
Practice address 40 Dale Road, Suite 201, Avon, CT, 06001
Phone (860) 676-9350
Fax (860) 678-7178
Enumeration date Jan 12, 2007
Last updated in NPPES Apr 7, 2009
Taxonomy & licenses
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 017197-1 (NY) Secondary
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 20042132 (IN) Secondary
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 002913 (CT) Primary
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 Ryan Hartmann?
The National Provider Identifier (NPI) for Ryan Hartmann is 1649321258, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ryan Hartmann practice?
The practice location on file with NPPES is in Avon, CT. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Wendy Habelow Clinical Psychologist · Avon, CT NPI 1205913340 Heather Quinlan Social Worker · Avon, CT NPI 1780761726 Elizabeth Thayer Clinical Psychologist · Avon, CT NPI 1013094176 Ted Sewitch Clinical Psychologist · Avon, CT NPI 1285711226 Donald Topor Clinical Social Worker · Avon, CT NPI 1326125360 Kimberlee Werrett Clinical Social Worker · Avon, CT NPI 1073670881 Bruce Komarow Dentist · Avon, CT NPI 1932311453 Elizabeth Matern Psychiatry Physician · Avon, CT NPI 1699979542
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-04-07.