Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Buffy Cramer-Hammann PC

Psychologist in St Charles, IL · enumerated 2014 · authorized official Buffy Cramer-Hammann, President.

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

National Provider Identifier

1134548332

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Registry record

Entity type Organization (Type 2)

Legal business name Buffy Cramer-Hammann PC

Practice address 333 N Randall Rd, Suite 11, St Charles, IL, 60174

Phone (630) 464-5824

Fax (847) 628-9567

Enumeration date Apr 15, 2014

Last updated in NPPES Apr 15, 2014

Taxonomy & classification

103T00000X Psychologist Behavioral Health & Social Service Providers · License 071006448 (IL) Primary

Authorized official

Name Buffy Cramer-Hammann

Title President

Phone (630) 841-7658

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

Where is Buffy Cramer-Hammann PC located?

The practice location on file with NPPES is in St Charles, IL.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2014-04-15. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-04-15.