Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Newton Tak-Yip Li, M.D.

Allergy & Immunology Physician in Arlington Heights, IL · enumerated 2008.

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

National Provider Identifier

1285897728

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Registry record

Entity type Individual (Type 1)

Name Dr. Newton Tak-Yip Li

Credential M.D.

Sex Male

Practice address 1051 W Rand Rd Ste 210, Arlington Heights, IL, 60004

Phone (847) 618-9510

Fax (847) 618-9506

Enumeration date Jul 4, 2008

Last updated in NPPES May 5, 2021

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 036-127337 (IL) 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
036127337	Medicaid	IL	-

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 Newton Li?

Newton Li is registered in NPPES with the primary taxonomy of Allergy & Immunology 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-05.