Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark Jeffery Fields, O.D.
Optometrist in Richmond, KY · enumerated 2007.
Data current as of Jul 11, 2026 · sourced from CMS NPPES
National Provider Identifier
1720136351
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark Jeffery Fields
Credential O.D.
Sex Male
Practice address 820 Eastern Byp, Richmond, KY, 40475
Phone (859) 625-0042
Enumeration date Jan 8, 2007
Last updated in NPPES Dec 18, 2007
Taxonomy & licenses
OD — Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 77013159 | Medicaid | KY | — |
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 Mark Fields practice?
The practice location on file with NPPES is in Richmond, KY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Fields?
The National Provider Identifier (NPI) for Mark Fields is 1720136351, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-12-18.