NPPES file of Aug 9, 2026

John Karl Gregory, O.D.

Optometrist · Pittsburgh, PA

John Karl Gregory, O.D. is an optometrist with a practice address in Pittsburgh, Pennsylvania, and NPI 1366525347, issued on Oct 23, 2006. Check the license (Pennsylvania OEG001128, as entered in NPPES) with the Pennsylvania board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1366525347
Name
John Karl Gregory
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
OEG001128 PA
Self-reported in NPPES; status is on the state search
Practice location
2275 Swallow Hill RD, Pittsburgh, PA 15220
Phone
(412) 489-6726
Enumerated
Oct 23, 2006
Record last updated
Mar 4, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(412) 489-6732
Medicare enrollment
Enrolled (PECOS I20070928000414); accepts Medicare assignment
Medical or professional school
Southern College Of Optometry, 1994
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest optometrist records → All 2,640 in Pennsylvania → Look up another NPI →

Also registered at 2275 Swallow Hill RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Wendy Batman, DPTPhysical Therapist1184870586
  2. Dominic Brandy, MDPlastic Surgery Physician1417019613
  3. Kathy Conaway, CRNPFamily Medicine Physician1437580446
  4. James English, DMDDentist1821028218
  5. Vincent Gross, D.C.Chiropractor1639163066
  6. Nicole Gruber, CRNPFamily Medicine Physician1356686711

Verify John Karl Gregory in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
    Search for license OEG001128    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Pennsylvania license search

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John Karl Gregory among 2,640 optometrist records in Pennsylvania

John Karl Gregory, O.D. is one of 2,640 optometrist records with a practice address in Pennsylvania. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 14% of them.

  • NPI issued2006 · 14% of these records are older, 48% newer
  • In a Medicare fileNo · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated1994 · median 2004 among the 1,588 with a school on file
  • Record last updated2014 · 69% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Optometrist providers in Pennsylvania

There are 2,640 optometrist records in Pennsylvania. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,640 in Pennsylvania → Every provider in Pittsburgh → Optometrist nationwide →

The 8 optometrist records with the nearest ZIP codes

  1. Brooke Calle, ODPittsburgh, PA 152201356235378
  2. Antonio Chirumbolo, O.D.Pittsburgh, PA 152201376982355
  3. Michele Schraeder, O.D.Pittsburgh, PA 152201346577301
  4. Joshua Clermont, O.D.Pittsburgh, PA 152191174971337
  5. Elwin Cotman, ODWilkinsburg, PA 152211205962636
  6. Emily DepewPittsburgh, PA 152191326575135
  7. Kimberly Fazio, ODPittsburgh, PA 152191619549565
  8. Roshanak Fereydouni, O.D.Pittsburgh, PA 152191780097212

Common questions

What is John Karl Gregory, O.D.'s NPI number?

John Karl Gregory, O.D.'s National Provider Identifier (NPI) is 1366525347, issued on Oct 23, 2006. An NPI identifies a provider in billing; it is not a license.

Where is John Karl Gregory, O.D. located?

The NPPES record lists a practice address at 2275 Swallow Hill RD, Pittsburgh, PA, 15220. Phone: (412) 489-6726. Providers update this record themselves, so call before visiting.

How can I verify John Karl Gregory, O.D.'s license?

NPPES lists Pennsylvania license number OEG001128, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.