Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John Francis Koloski, D.C.
Chiropractor in Arnold, MD · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1235412859
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Registry record
Entity type Individual (Type 1)
Name Dr. John Francis Koloski
Credential D.C.
Sex Male
Practice address 1460 Ritchie Hwy, Suite # 206, Arnold, MD, 21012
Phone (410) 757-8989
Fax (410) 757-9139
Enumeration date Sep 20, 2011
Last updated in NPPES Mar 20, 2015
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC 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.
Frequently asked questions
Is NPI 1235412859 active?
Yes, as of the latest NPPES snapshot, NPI 1235412859 is active (record last updated 2015-03-20).
How do I verify John Koloski's NPI record?
Cross-check NPI 1235412859 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → James Ruppel Family Medicine Physician · Arnold, MD NPI 1912906512 Luminis Health Medical Group, LLC Family Medicine Physician · Arnold, MD NPI 1023085222 Scott Finlay General Practice Dentistry · Arnold, MD NPI 1457384414 Diane Kelly Chiropractor · Arnold, MD NPI 1578582375 Candace Tesch Pediatrics Physician · Arnold, MD NPI 1225104391 Kelly Chiropractic Center, P.A. Chiropractor · Arnold, MD NPI 1184781981 Christopher Anderson Dentist · Arnold, MD NPI 1699066027 Colleen Demirkan Pharmacist · Arnold, MD NPI 1134404627
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-03-20.