Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ethan Seth Rothstein, PH.D.
Clinical Psychologist in Darien, CT · enumerated 2014.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1710305537
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Ethan Seth Rothstein
Credential PH.D.
Sex Male
Practice address 85 Old Kings Hwy N, Darien, CT, 06820
Phone (203) 202-7654
Enumeration date Mar 29, 2014
Last updated in NPPES May 30, 2018
Taxonomy & licenses
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 003617 (CT) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD 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
Where does Ethan Rothstein practice?
The practice location on file with NPPES is in Darien, CT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Ethan Rothstein?
The National Provider Identifier (NPI) for Ethan Rothstein is 1710305537, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Jonathan Bowman Vascular Surgery Physician · Darien, CT NPI 1104851294 Ben Marsan Vascular Surgery Physician · Darien, CT NPI 1518977479 Timothy Manoni Vascular Surgery Physician · Darien, CT NPI 1821008715 Taras Kucher Vascular Surgery Physician · Darien, CT NPI 1942210851 Maryjean Macdonald Clinical Psychologist · Darien, CT NPI 1578681516 Patricia Ryan Clinical Neuropsychologist · Darien, CT NPI 1396959656 Janine Tedesco Physician Assistant · Darien, CT NPI 1487821401 Lauren Zalis Pediatric Occupational Therapist · Darien, CT NPI 1467685974
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-05-30.