Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John David Ferrin, D.M.D. , MS
Periodontics in Medford, OR · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1194093146
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Registry record
Entity type Individual (Type 1)
Name Dr. John David Ferrin
Credential D.M.D. , MS
Sex Male
Practice address 2930 E Barnett Rd, Medford, OR, 97504
Phone (541) 944-5745
Enumeration date Dec 6, 2011
Last updated in NPPES Jun 30, 2014
Taxonomy & licenses
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees.
About the DMD 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 Ferrin?
John Ferrin is registered in NPPES with the primary taxonomy of Periodontics. 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
Browse all → Emory Hamilton Periodontics · Medford, OR NPI 1497748057 Emory E. Hamilton Dmd Periodontics · Medford, OR NPI 1194932954 Michael Martin Periodontics · Medford, OR NPI 1982811758 Tetsuji Watari Periodontics · Medford, OR NPI 1639347958 John D Ferrin Dmd LLC Periodontics · Medford, OR NPI 1518372556 Rogue Periodontics & Implant Dentistry Periodontics · Medford, OR NPI 1437836343
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-06-30.