Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Xin Liu, M.D.

General Practice Physician in Claymont, DE · enumerated 2008 · practices at Claymont Walk in Care LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1518129154

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Registry record

Entity type Individual (Type 1)

Name Xin Liu

Credential M.D.

Sex Male

Practice address 2400 Philadelphia Pike Ste A, Claymont, DE, 19703

Phone (302) 317-1531

Fax (302) 291-4986

Enumeration date Jun 25, 2008

Last updated in NPPES Mar 18, 2025

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License MD433848 (PA) Secondary

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License C1-0009015 (DE) Secondary

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License C1-0024055 (DE) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
44030	Other	PA	ABA CERTIFICATE #
P00847920	Other	DE	RAILROAD MEDICARE
102311316	Medicaid	PA	-
P00740153	Other	PA	RAILROAD MEDICARE

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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Xin Liu's NPI record?

Cross-check NPI 1518129154 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1518129154 active?

Yes, as of the latest NPPES snapshot, NPI 1518129154 is active (record last updated 2025-03-18).

Other providers at this practice address

Browse all →

Lin Zheng Internal Medicine Physician · Claymont, DE NPI 1598095747 Claymont Walk in Care LLC Urgent Care Clinic/Center · Claymont, DE NPI 1871199851 Meiru Zhao Family Nurse Practitioner · Claymont, DE NPI 1659878387 Kaleb Carter Family Nurse Practitioner · Claymont, DE NPI 1538565726

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-18.