Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Gretchen Marie Dyer, D.C.
Chiropractor in Mason, OH · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1336295179
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Registry record
Entity type Individual (Type 1)
Name Dr. Gretchen Marie Dyer
Credential D.C.
Sex Female
Practice address 7588 Central Parke Blvd, Suite 326, Mason, OH, 45040
Phone (513) 204-6910
Fax (513) 204-6913
Enumeration date Jan 26, 2007
Last updated in NPPES Apr 16, 2008
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 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.
What specialty is Gretchen Dyer?
Gretchen Dyer is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-16.