Mark L Wu, MD

Mark L Wu is a Anatomic Pathology & Clinical Pathology Physician provider (Pathology) practicing in Orange, CA, registered in the NPPES registry with NPI 1366536625 since 2006. The credential MD stands for Doctor of Medicine.

✓ Active NPI ✓ Valid NPI checksum

NPI	1366536625
Entity type	Individual (Type 1)
Name	Mark L Wu
Credential	MD
Sex	Male
Practice address	UCI MEDICAL CENTER, 101 THE CITY DRIVE SOUTH, Orange, CA, 92868
Phone	7144562986
Enumeration date	2006-10-03
Last updated in NPPES	2008-03-25

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
207ZP0102X	Anatomic Pathology & Clinical Pathology Physician	Primary	000000A72344	CA

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
00A723440	Other	CA	BLUE SHIELD
00A723440	Medicaid	CA	—
P00074904	Other	CA	RAILROAD MEDICARE
WA72344A	Other	CA	MEDICARE PTAN

Copy-ready billing details

Provider: Mark L Wu, MD
NPI: 1366536625
Taxonomy: 207ZP0102X (Anatomic Pathology & Clinical Pathology Physician)
Address: UCI MEDICAL CENTER, 101 THE CITY DRIVE SOUTH, Orange, CA, 92868

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1093795684	Ajanta Naidu	Individual	Pediatric Endocrinology Physician	Orange, CA
1518061100	Feizal Waffarn	Individual	Neonatal-Perinatal Medicine Physician	Orange, CA
1790889384	Harry B Skinner	Individual	Adult Reconstructive Orthopaedic Surgery Physician	Orange, CA
1609970292	Brian S Andrews	Individual	Rheumatology Physician	Orange, CA
1407950090	Lloyd Rucker	Individual	Internal Medicine Physician	Orange, CA
1225132814	Mark Fisher	Individual	Vascular Neurology Physician	Orange, CA
1467546721	John Weiss	Individual	Neurology Physician	Orange, CA
1376637637	James H Williams Jr	Individual	Hospitalist Physician	Orange, CA

Verify this record

Cross-check NPI 1366536625 against the authoritative CMS record: view Mark L Wu on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Is NPI 1366536625 active?

Yes — as of the latest NPPES snapshot, NPI 1366536625 is active (record last updated 2008-03-25).

How do I verify Mark L Wu's NPI record?

Cross-check NPI 1366536625 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2008-03-25.