Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Elaine Sien, PHARM.D.
Pharmacist in Fontana, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1629120738
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Registry record
Entity type Individual (Type 1)
Name Elaine Sien
Credential PHARM.D.
Sex Female
Practice address 9961 Sierra Ave, Fontana, CA, 92335
Phone (909) 302-8339
Enumeration date Jan 17, 2007
Last updated in NPPES Jun 23, 2015
Taxonomy & licenses
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy.
About the PHARMD 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 Elaine Sien?
The National Provider Identifier (NPI) for Elaine Sien is 1629120738, a Type 1 (individual) record in the CMS NPPES registry.
Where does Elaine Sien practice?
The practice location on file with NPPES is in Fontana, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Khosro Iromloo Specialist · Fontana, CA NPI 1851395313 Barbara Mahoney Adult Health Nurse Practitioner · Fontana, CA NPI 1578560199 Terry Skok Acute Care Nurse Practitioner · Fontana, CA NPI 1932106697 David Whitaker Emergency Medicine Physician · Fontana, CA NPI 1255331203 Timothy Mccarter Gastroenterology Physician · Fontana, CA NPI 1386628402 Nancy Svitek Emergency Medicine Physician · Fontana, CA NPI 1205811007 Samuel Ahn Vascular & Interventional Radiology Physician · Fontana, CA NPI 1942286661 Christine Carlson Family Medicine Physician · Fontana, CA NPI 1386612299
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-06-23.