Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jonathan S. Buka, M.D.

Ophthalmology Physician in Oak Lawn, IL · enumerated 2006 · practices at Eye Specialist Group, LLC.

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

National Provider Identifier

1477522050

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Registry record

Entity type Individual (Type 1)

Name Dr. Jonathan S. Buka

Credential M.D.

Sex Male

Practice address 4400 W 95th St Ste 312, Oak Lawn, IL, 60453

Phone (708) 581-3514

Fax (708) 529-3123

Enumeration date Mar 16, 2006

Last updated in NPPES Oct 30, 2025

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 036066839 (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
200325390	Other	IN	MEDICARE LEGACY PROVIDER NUMBER
200871680A	Other	IN	MEDICAID LOCATION MUNSTER
180046208	Other	IL	MEDICARE RAILROAD
200325390B	Other	IN	IN PHYSICIANS MEDICAID
833002861	Medicaid	IL	-
L77581	Other	IL	MEDICARE INDIVIDUAL PTAN
205785	Other	IL	PTAN IL MEDICARE COOK COUNTY
P00932946	Other	IL	MEDICARE RAILROAD DUPAGE CO. INDIVIDUAL PTAN
036066839	Medicaid	IL	-
200871680B	Other	IN	MEDICAID LOCATION CHICAGO RIDGE
200871680C	Other	IN	MEDICAID LOCATION ORLAND PARK
205786	Other	IL	PTAN IL MEDICARE DUPAGE COUNTY
DR4230	Other	IL	MEDICARE RAILROAD GROUP PTAN DUPAGE CO.
200871680D	Other	IN	MEDICAID LOCATION HINSDALE
253350	Other	IN	PTAN GROUP PRACTICE INDIANA 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.

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Frequently asked questions

What specialty is Jonathan Buka?

Jonathan Buka is registered in NPPES with the primary taxonomy of Ophthalmology 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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Eye Specialist Group, LLC Ophthalmology Physician · Oak Lawn, IL NPI 1669945440

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-30.