Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Pak, MD

Ophthalmic Plastic and Reconstructive Surgery Physician in Wheaton, IL · enumerated 2006.

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

National Provider Identifier

1811937311

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. John Pak

Credential MD

Sex Male

Practice address 2015 N Main St, Wheaton, IL, 60187

Phone (630) 668-8250

Fax (630) 668-8916

Enumeration date Jun 7, 2006

Last updated in NPPES Aug 26, 2024

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 036-108561 (IL) Secondary

207WX0200X Ophthalmic Plastic and Reconstructive Surgery Physician Allopathic & Osteopathic Physicians · License 036-108561 (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
P00336843	Other	IL	RR MEDICARE
036108561	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

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 John Pak?

John Pak is registered in NPPES with the primary taxonomy of Ophthalmic Plastic and Reconstructive Surgery Physician. 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 2024-08-26.