Tiamson INC in Rancho Cucamonga, CA
This organization bills under NPI 1124745161, an organization record issued on Oct 20, 2022 with the primary taxonomy Family Nurse Practitioner. Each clinician who works there has their own NPI and license.
Organization recordNPPES, Aug 2026
1124745161
- Legal name
- Tiamson INC
- Entity
- Type 2 · organization
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- Practice location
- 10570 FOOTHILL BLVD STE 220, Rancho Cucamonga, CA 91730
- Phone
- 909-808-4888
- Enumerated
- Oct 20, 2022
- Record updated
- Feb 8, 2023
- Authorized official
- Authorized Office / Owner (title as filed)
3 clinicians CMS lists with Tiamson in Rancho Cucamonga
- Anne Grace Guzman, FNPNurse Practitioner1932448024
- Nanette Leonardo, FNPPerinatal Registered Nurse1962879726
- Christina Pangan, NPFamily Nurse Practitioner1609614650
Source: CMS Doctors and Clinicians group affiliations, matched by practice name and city.
Checking an organization
- Confirm the business with the California secretary of state.
- Check the HHS-OIG exclusion list for the organization.
- Verify each clinician on their own record and the state license search.
All taxonomies on this record
- 163WP0000X Pain Management Registered Nurse
- 261QP2000X Physical Therapy Clinic/Center
- 363LF0000X Family Nurse Practitioner
Common questions
Is an organization NPI a license?
No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.
Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.