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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John R Groll, M.D.

Cardiovascular Disease Physician in Chester, IL · enumerated 2006.

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

National Provider Identifier

1396716163

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Registry record

Entity type Individual (Type 1)
Name Dr. John R Groll
Credential M.D.
Sex Male
Practice address 1900 State St, Chester, IL, 62233
Phone (618) 826-4581
Fax (318) 826-5152
Enumeration date Jan 30, 2006
Last updated in NPPES Jul 20, 2023

Taxonomy & licenses

174400000X Specialist Other Service Providers · License R8J11 (MO) Secondary
207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 036-094904 (IL) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

Is NPI 1396716163 active?
Yes, as of the latest NPPES snapshot, NPI 1396716163 is active (record last updated 2023-07-20).
How do I verify John Groll's NPI record?
Cross-check NPI 1396716163 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-20.