Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Sidney Mae Vonfeldt
Registered Nurse in Hays, KS · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659169407
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Registry record
Entity type Individual (Type 1)
Name Sidney Mae Vonfeldt
Sex Female
Practice address 2220 Canterbury Dr, Hays, KS, 67601
Phone (785) 623-5295
Enumeration date Apr 30, 2025
Last updated in NPPES Feb 23, 2026
Taxonomy & licenses
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
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 Sidney Vonfeldt?
Sidney Vonfeldt 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 → Hays Medical Center Inc General Acute Care Hospital · Hays, KS NPI 1881697043 Niranjan Seshadri Interventional Cardiology Physician · Hays, KS NPI 1306840210 Samuel Durham Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Hays, KS NPI 1467459040 Kurt Rider Anatomic Pathology Physician · Hays, KS NPI 1386643252 Amy Glover Physician Assistant · Hays, KS NPI 1558356519 Kari Ryan Certified Registered Nurse Anesthetist · Hays, KS NPI 1558356154 Marshall Eidenberg Emergency Medicine Physician · Hays, KS NPI 1558352559 Robert Phillips Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Hays, KS NPI 1033182290
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-23.