Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ramona Therese Holtz, NP
Nurse Practitioner in Calexico, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659438000
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Registry record
Entity type Individual (Type 1)
Name Ramona Therese Holtz
Credential NP
Sex Female
Practice address 223 W Cole Rd, Calexico, CA, 92231
Phone (760) 357-2020
Enumeration date Jan 3, 2007
Last updated in NPPES Dec 8, 2011
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 437781 (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
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 is the NPI number for Ramona Holtz?
The National Provider Identifier (NPI) for Ramona Holtz is 1659438000, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ramona Holtz practice?
The practice location on file with NPPES is in Calexico, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-08.