Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mark Liu
Pharmacist in Philadelphia, PA · enumerated 2014.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1902203995
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Registry record
Entity type Individual (Type 1)
Name Mark Liu
Sex Male
Practice address 1550 Pratt St, Philadelphia, PA, 19124
Phone (267) 686-8800
Fax (267) 686-8745
Enumeration date Nov 19, 2014
Last updated in NPPES Jun 27, 2025
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1030380870001 | Medicaid | PA | - |
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 this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Mark Liu?
Mark Liu is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-27.