Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Steven M Orenstein, PHD
Psychologist in Wailuku, HI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1871503227
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Registry record
Entity type Individual (Type 1)
Name Dr. Steven M Orenstein
Credential PHD
Sex Male
Practice address 1935 Main St, Ste 102, Wailuku, HI, 96793
Phone (808) 442-3245
Fax (808) 829-3594
Enumeration date Aug 8, 2006
Last updated in NPPES Jan 18, 2017
Taxonomy & licenses
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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Steven Orenstein?
Steven Orenstein is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Mishna Orion Physician Assistant · Wailuku, HI NPI 1558436535 Maui A.I.D.S. Foundation Case Management Agency · Wailuku, HI NPI 1295184752 Makana O Ka Ola Health and Wellness Clinic Primary Care Clinic/Center · Wailuku, HI NPI 1750832259 Bryan Chin Family Nurse Practitioner · Wailuku, HI NPI 1366980864
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-01-18.