Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Joanne Kieffer Helfer, NP
Nurse Practitioner in Modesto, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1740242254
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Registry record
Entity type Individual (Type 1)
Name Joanne Kieffer Helfer
Credential NP
Sex Female
Practice address 1114 6th St, Modesto, CA, 95354
Phone (209) 576-2845
Fax (209) 576-8842
Enumeration date Apr 3, 2006
Last updated in NPPES Mar 7, 2023
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License NP12691 (CA) Primary
NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority.
About the NP credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| FNP 12691 | Other | CA | NURSE PRACTITIONER LICENS |
| RN221235 | Other | CA | MEDICAL 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
What specialty is Joanne Helfer?
Joanne Helfer is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.