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

Individual provider Optometrist · NPI 1366525347

Dr. John Karl Gregory, OD is an Optometry in Pittsburgh, Pennsylvania. Graduated from Southern College of Optometry in 1994, 32 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
32
Trained at
Southern 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

2275 Swallow Hill Rd Bldg 700
Pittsburgh, PA 15220-1656
Phone: (412) 489-6726
Fax: (412) 489-6732
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence OEG001128 (PA)

Record details

NPI number1366525347
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorYes
NPI enumeratedOctober 23, 2006
Last updated in NPPESMarch 4, 2014
Mailing address2275 Swallow Hill Rd, Building 700, Pittsburgh, PA 15220-1656

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolSOUTHERN COLLEGE OF OPTOMETRY
Graduated 1994 (32 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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