Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Alan Brevik, MD
Psychiatry Physician in Yankton, SD · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1750364113
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Registry record
Entity type Individual (Type 1)
Name Alan Brevik
Credential MD
Sex Male
Practice address 1028 Walnut, Lewis & Clark Bhs, Yankton, SD, 57078
Phone (605) 665-4606
Fax (605) 665-4673
Enumeration date Nov 21, 2005
Last updated in NPPES Nov 30, 2011
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD 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 Alan Brevik?
Alan Brevik is registered in NPPES with the primary taxonomy of Psychiatry Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-30.