Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Shelly Lynn Ziehm Chamberlin, OTR/L, CHT

Occupational Therapist in Crystal Lake, IL · enumerated 2007.

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

National Provider Identifier

1336335900

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Registry record

Entity type Individual (Type 1)

Name Mrs. Shelly Lynn Ziehm Chamberlin

Credential OTR/L, CHT

Sex Female

Practice address 420 N Il Route 31, Crystal Lake, IL, 60012

Phone (815) 356-5200

Fax (815) 356-5262

Enumeration date Sep 18, 2007

Last updated in NPPES Apr 16, 2012

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 056005149 (IL) Primary

Other identifiers

Identifier	Type	State	Issuer
1061100880	Other	-	CERTIFIED HAND THERAPIST

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 the NPI number for Shelly Chamberlin?

The National Provider Identifier (NPI) for Shelly Chamberlin is 1336335900, a Type 1 (individual) record in the CMS NPPES registry.

Where does Shelly Chamberlin practice?

The practice location on file with NPPES is in Crystal Lake, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-16.