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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Lawrence Paul Groh, DDS

General Practice Dentistry in Elmhurst, IL · enumerated 2007 · practices at Elmhurst Dental Group Ltd.

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

National Provider Identifier

1639236334

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Registry record

Entity type Individual (Type 1)
Name Dr. Lawrence Paul Groh
Credential DDS
Sex Male
Practice address 333 W 1st St, Elmhurst, IL, 60126
Phone (630) 833-5110
Enumeration date Jan 2, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 19A-14858 (IL) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

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

How do I verify Lawrence Groh's NPI record?
Cross-check NPI 1639236334 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1639236334 active?
Yes, as of the latest NPPES snapshot, NPI 1639236334 is active (record last updated 2007-07-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.