Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John Richard Rinker, R.N.
Registered Nurse in Oxford, MI · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1881037596
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Registry record
Entity type Individual (Type 1)
Name John Richard Rinker
Credential R.N.
Sex Male
Practice address 1450 S Lapeer Rd, Oxford, MI, 48371
Phone (248) 969-9932
Fax (248) 969-0840
Enumeration date Apr 11, 2013
Last updated in NPPES Apr 12, 2013
Taxonomy & licenses
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam.
About the RN 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
What specialty is John Rinker?
John Rinker is registered in NPPES with the primary taxonomy of Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-12.