Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alan Wing-Lun Wan, D.O.

Hematology & Oncology Physician in Schaumburg, IL · enumerated 2011 · practices at Du Page Medical Group, Ltd.

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

National Provider Identifier

1669777074

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Registry record

Entity type Individual (Type 1)

Name Dr. Alan Wing-Lun Wan

Credential D.O.

Sex Male

Practice address 1325 N Meacham Rd, Schaumburg, IL, 60173

Phone (630) 364-7850

Fax (630) 432-6604

Enumeration date Jan 14, 2011

Last updated in NPPES Dec 8, 2025

Taxonomy & licenses

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License 036133552 (IL) Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 036133552 (IL) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
F400325774	Other	IL	MEDICARE PTAN INDIVIDUAL
036133552	Medicaid	IL	-
206147	Other	IL	MEDICARE PTAN GROUP

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

What specialty is Alan Wan?

Alan Wan is registered in NPPES with the primary taxonomy of Hematology & Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Other providers at this practice address

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George Tsoutsias Emergency Medicine Physician · Schaumburg, IL NPI 1760442172 Amit Zachariah Interventional Cardiology Physician · Schaumburg, IL NPI 1295964872 Ria Parcellano Geriatric Medicine (Family Medicine) Physician · Schaumburg, IL NPI 1366708117 Mohammed Asif Plastic Surgery Physician · Schaumburg, IL NPI 1770844888 Sonia Caraballo-Cartagena Neurology Physician · Schaumburg, IL NPI 1184025132 Sudha Yarlagadda Hematology & Oncology Physician · Schaumburg, IL NPI 1467831552 Anna Chichura Surgical Oncology Physician · Schaumburg, IL NPI 1003348756 Rameez Husain Chaviwala Family Medicine Physician · Schaumburg, IL NPI 1033633573

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-08.