Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Alton Memorial Physician Billing Services LLC

Multi-Specialty Clinic/Center in Alton, IL · enumerated 2014 · authorized official Susan Koesterer, Vice President, Cfo.

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

National Provider Identifier

1558783647

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Registry record

Entity type Organization (Type 2)

Legal business name Alton Memorial Physician Billing Services LLC

Other name <Unavail>

Practice address 1 Professional Dr, Alton, IL, 62002

Phone (618) 474-0130

Enumeration date Jan 9, 2014

Last updated in NPPES Mar 25, 2021

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Secondary

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians Secondary

261QM1300X Multi-Specialty Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Susan Koesterer

Title Vice President, Cfo

Phone (314) 653-5715

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2021-03-25. Verify at npiregistry.cms.hhs.gov.

Where is Alton Memorial Physician Billing Services LLC located?

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

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-25.