Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Roger A Larson, PSYD
Psychologist in Bismarck, ND · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1841231065
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Registry record
Entity type Individual (Type 1)
Name Dr. Roger A Larson
Credential PSYD
Sex Male
Practice address 1237 W Divide Ave, Ste 5, Bismarck, ND, 58501
Phone (701) 328-8883
Fax (701) 328-8900
Enumeration date Jun 9, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice.
About the PSYD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 004479 | Other | - | BCBS OF ND PIN |
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 Roger Larson?
Roger Larson 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 → Igmidio Santos Psychiatry Physician · Bismarck, ND NPI 1730161613 Tim Gienger Clinical Social Worker · Bismarck, ND NPI 1245291525 West Central Behavioral Health Clinic Mental Health Clinic/Center (Including Community Mental Health Center) · Bismarck, ND NPI 1649226713 West Central Human Service Center Developmental Disabilities Clinic/Center · Bismarck, ND NPI 1356398275 Paulette Aasen Psychologist · Bismarck, ND NPI 1679512586 Thomas Eick Psychiatry Physician · Bismarck, ND NPI 1972544708 Deborah Schon Clinical Social Worker · Bismarck, ND NPI 1861433690 Lisa Hay Psychologist · Bismarck, ND NPI 1356383574
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.