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

Louis W Mastrian, OD

Individual provider Optometrist · NPI 1255314043

Louis W Mastrian, OD is an Optometry in Hermitage, Pennsylvania. Graduated from University of Missouri St Louis - School of Optometry in 1990, 36 years ago. Practices with Mastrian Eyecare, LLC, a 2-clinician group. Licensed in Pennsylvania.

Years since qualifying
36
Trained at
University of Missouri St Louis - School of Optometry
Licensed in
PA
In the registry since
2005
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

490 N Kerrwood Dr Ste 203
Hermitage, PA 16148-5202
Phone: (724) 342-2733
Fax: (724) 342-6652
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence OEG001321 (PA)

Record details

NPI number1255314043
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedNovember 25, 2005
Last updated in NPPESSeptember 6, 2012

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolUNIVERSITY OF MISSOURI ST LOUIS - SCHOOL OF OPTOMETRY
Graduated 1990 (36 years in practice)
Group practice Mastrian Eyecare, Llc — 2 clinicians
Accepts Medicare assignment Not indicated

Other providers in Hermitage