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

Greggory Gahn, MD

Individual provider Retina Specialist (Ophthalmology) Physician · NPI 1720541147

Greggory Gahn, MD is an Ophthalmology in Reno, Nevada. Graduated from University of Nevada School of Medicine in 2019, 7 years ago. Practices with Plecha Durant Stanko Johnson and Cohen a Professional Corporation, a 4-clinician group and accepts Medicare assignment. Licensed in Nevada.

Years since qualifying
7
Trained at
University of Nevada School of Medicine
Licensed in
NV
In the registry since
2019
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

950 Ryland St
Reno, NV 89502-1605
Phone: (757) 329-0286
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Retina Specialist (Ophthalmology) Physician (primary) Taxonomy 207WX0107X · Licence 23736 (NV)

Record details

NPI number1720541147
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 11, 2019
Last updated in NPPESOctober 3, 2025
Certification dateOctober 3, 2025
Mailing address655 N Alvernon Way Ste 204, Tucson, AZ 85711-1825

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolUNIVERSITY OF NEVADA SCHOOL OF MEDICINE
Graduated 2019 (7 years in practice)
Group practice Plecha Durant Stanko Johnson And Cohen A Professional Corporation — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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