Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Diana K Fenstermacher Ritchie
Chiropractor in Eureka, CA · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1790443109
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Registry record
Entity type Individual (Type 1)
Name Diana K Fenstermacher Ritchie
Sex Female
Practice address 1775 Harrison Ave, Eureka, CA, 95501
Phone (707) 445-8080
Enumeration date Dec 2, 2021
Last updated in NPPES Dec 2, 2021
Taxonomy & licenses
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 NPI 1790443109 active?
Yes, as of the latest NPPES snapshot, NPI 1790443109 is active (record last updated 2021-12-02).
How do I verify Diana Fenstermacher Ritchie's NPI record?
Cross-check NPI 1790443109 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Andrew Fogg Chiropractor · Eureka, CA NPI 1699761684 Bellinger Chiropractic Corporation Chiropractor · Eureka, CA NPI 1376894766 Active Care Chiropractic, Fogg Professional Corporation Chiropractor · Eureka, CA NPI 1356707772 Elizabeth Savoca Fogg Marriage & Family Therapist · Eureka, CA NPI 1558849687 Antonia Diller Chiropractor · Eureka, CA NPI 1790382828 Marco Brine Chiropractor · Eureka, CA NPI 1326819434 Adam Mester Massage Therapist · Eureka, CA NPI 1780406702 Rebecca Grande Massage Therapist · Eureka, CA NPI 1003638081
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-02.