Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Sandra J Regan, PHD
Psychologist in Lake Geneva, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1023125366
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Registry record
Entity type Individual (Type 1)
Name Dr. Sandra J Regan
Credential PHD
Sex Female
Practice address 146 E Geneva Sq, Lake Geneva, WI, 53147
Phone (262) 249-4620
Fax (262) 249-7132
Enumeration date Aug 24, 2006
Last updated in NPPES Jul 9, 2007
Taxonomy & licenses
103T00000X Psychologist Behavioral Health & Social Service Providers · License 2010-057 (WI) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 39679200 | Medicaid | WI | - |
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 Sandra Regan?
The National Provider Identifier (NPI) for Sandra Regan is 1023125366, a Type 1 (individual) record in the CMS NPPES registry.
Where does Sandra Regan practice?
The practice location on file with NPPES is in Lake Geneva, WI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Catherine Davis Social Worker · Lake Geneva, WI NPI 1356340483 Michelle Nelson Physician Assistant · Lake Geneva, WI NPI 1063493088 Annette Husske Physician Assistant · Lake Geneva, WI NPI 1790739035 Aurora Pharmacy Inc Pharmacy · Lake Geneva, WI NPI 1316971534 Nancy Asencio Nurse Practitioner · Lake Geneva, WI NPI 1962410530 Claudia Peterson Certified Registered Nurse Anesthetist · Lake Geneva, WI NPI 1265440838 Daniel Christy Psychologist · Lake Geneva, WI NPI 1164435400 John Gorenc Social Worker · Lake Geneva, WI NPI 1619082682
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.