Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Sian E Liem, OD
Optometrist in Scarborough, ME · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1275522948
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Registry record
Entity type Individual (Type 1)
Name Dr. Sian E Liem
Credential OD
Sex Female
Practice address 7 Portland Farms Rd, Scarborough, ME, 04074
Phone (207) 883-2809
Fax (207) 885-5607
Enumeration date Oct 17, 2005
Last updated in NPPES Jan 6, 2012
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 237970099 | Medicaid | ME | - |
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 Sian Liem?
The National Provider Identifier (NPI) for Sian Liem is 1275522948, a Type 1 (individual) record in the CMS NPPES registry.
Where does Sian Liem practice?
The practice location on file with NPPES is in Scarborough, ME. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-01-06.