Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Maria Refujia Sierra
Peer Specialist in Manteca, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1790908556
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Registry record
Entity type Individual (Type 1)
Name Maria Refujia Sierra
Sex Female
Practice address 302 Cherry Ln, Manteca, CA, 95337
Phone (209) 647-6200
Fax (209) 447-6210
Enumeration date Apr 10, 2007
Last updated in NPPES Jun 12, 2023
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
How do I verify Maria Sierra's NPI record?
Cross-check NPI 1790908556 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1790908556 active?
Yes, as of the latest NPPES snapshot, NPI 1790908556 is active (record last updated 2023-06-12).
Other providers at this practice address
Browse all → Aiyanna Kobler Day Training/Habilitation Specialist · Manteca, CA NPI 1518165844 Kathryn Langham Psychiatry Physician · Manteca, CA NPI 1598925901 Jacquelyn Seefeldt Marriage & Family Therapist · Manteca, CA NPI 1124250204 Melanie Jimenez Day Training/Habilitation Specialist · Manteca, CA NPI 1073811527 : Mark David Levine, M.D. Professional Corporation Psychiatry Physician · Manteca, CA NPI 1407119571 Caliphal Shaver Day Training/Habilitation Specialist · Manteca, CA NPI 1427498765 Mary Padilla Peer Specialist · Manteca, CA NPI 1326571704 Coral Boyle-Day Marriage & Family Therapist · Manteca, CA NPI 1083140610
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-12.