Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Atkinson Clinic Sc

Q: What type of organization is Atkinson Clinic Sc?

Atkinson Clinic Sc is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).

Internal Medicine Physician in Grayslake, IL · enumerated 2006 · authorized official Sergei Shevlyagin, Owner.

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

National Provider Identifier

1437169646

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Registry record

Entity type Organization (Type 2)

Legal business name Atkinson Clinic Sc

Practice address 100 N Atkinson Rd Ste 207, Grayslake, IL, 60030

Phone (847) 548-9777

Fax (847) 548-9797

Enumeration date Aug 9, 2006

Last updated in NPPES Aug 21, 2012

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036978646 (IL) Primary

Authorized official

Name Sergei Shevlyagin

Title Owner

Phone (847) 548-9777

Other identifiers

Identifier	Type	State	Issuer
110224169	Other	IL	RAIL ROAD MEDICARE
4927894	Other	IL	BLUE CROSS/SHIELD
036978646	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 is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Atkinson Clinic Sc?

Atkinson Clinic Sc is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-08-21.