Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Ryan Koolen, D.C.
Chiropractor in Portland, MI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1588627657
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Registry record
Entity type Individual (Type 1)
Name Dr. Ryan Koolen
Credential D.C.
Sex Male
Practice address 9751 E Grand River Ave, Portland, MI, 48875
Phone (517) 647-5770
Fax (517) 647-5773
Enumeration date Apr 10, 2006
Last updated in NPPES Sep 7, 2012
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
Where does Ryan Koolen practice?
The practice location on file with NPPES is in Portland, MI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Ryan Koolen?
The National Provider Identifier (NPI) for Ryan Koolen is 1588627657, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Penny Thompson Nurse Practitioner · Portland, MI NPI 1144250267 Sparrow Ionia Hospital Rural Health Clinic/Center · Portland, MI NPI 1295801108 Craft Chiropractic Center PC Chiropractor · Portland, MI NPI 1164577698 Michael Mauren General Practice Dentistry · Portland, MI NPI 1245432780 Ionia County Memorial Hospital Rural Health Clinic/Center · Portland, MI NPI 1609011923 Christopher Erskin Family Medicine Physician · Portland, MI NPI 1972098234
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-09-07.