Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Jeffrey Alan Duncan, OD

Individual provider Optometrist · NPI 1669432365

Dr. Jeffrey Alan Duncan, OD is an Optometry in Fort Defiance, Arizona. Graduated from Pennsylvania College of Optometry in 1991, 35 years ago. Licensed in Pennsylvania.

Years since qualifying
35
Trained at
Pennsylvania College of Optometry
Licensed in
PA
In the registry since
2006
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

Corner Of Route N12 And N7
Fort Defiance, AZ 86504
Phone: (928) 729-8000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence OE 007276T (PA)

Record details

NPI number1669432365
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedMarch 25, 2006
Last updated in NPPESJune 19, 2026
Certification dateJune 19, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOPTOMETRY
Medical schoolPENNSYLVANIA COLLEGE OF OPTOMETRY
Graduated 1991 (35 years in practice)
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare

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