Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. James M Simmering, MD

Internal Medicine Physician in Maryville, IL · enumerated 2006 · practices at Maryville Physicians Services Inc.

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

National Provider Identifier

1700973351

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Registry record

Entity type Individual (Type 1)

Name Dr. James M Simmering

Credential MD

Sex Male

Practice address 6812 State Route 162, Suite 120, Maryville, IL, 62062

Phone (618) 288-1122

Fax (618) 288-1144

Enumeration date Oct 6, 2006

Last updated in NPPES Nov 20, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036067473 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
036067473	Medicaid	IL	-
08232205	Other	IL	BLUE CROSS BLUE SHIELD

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 does James Simmering practice?

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

What is the NPI number for James Simmering?

The National Provider Identifier (NPI) for James Simmering is 1700973351, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-20.