Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Rebecca A Griesemer, PA-C

Physician Assistant in Buffalo Grove, IL · enumerated 2006 · practices at Northwest Community Heralth Services, Inc..

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

National Provider Identifier

1134222425

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Registry record

Entity type Individual (Type 1)

Name Rebecca A Griesemer

Credential PA-C

Sex Female

Practice address 15 S Mchenry Rd, Buffalo Grove, IL, 60089

Phone (847) 618-0351

Fax (847) 618-0766

Enumeration date Sep 5, 2006

Last updated in NPPES Mar 16, 2022

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 085-002393 (IL) Primary

Other identifiers

Identifier	Type	State	Issuer
085002393	Other	IL	STATE LICENSE
203535	Other	IL	MEDICARE PTAN
203536	Other	IL	MEDICARE PTAN
203537	Other	IL	MEDICARE PTAN

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

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 Rebecca Griesemer?

Rebecca Griesemer is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-16.