Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mildred Martinez-Santos, RN
Registered Nurse in Eagle Butte, SD · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1669986881
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Registry record
Entity type Individual (Type 1)
Name Mildred Martinez-Santos
Credential RN
Sex Female
Practice address 24276 Airport Road, Eagle Butte, SD, 57625
Phone (605) 964-7724
Fax (605) 964-1156
Enumeration date Nov 27, 2017
Last updated in NPPES Jun 16, 2018
Taxonomy & licenses
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam.
About the RN 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 Mildred Martinez-Santos?
Mildred Martinez-Santos is registered in NPPES with the primary taxonomy of Registered Nurse. 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 2018-06-16.