John Lawrence Duffy, O.D.
Optometrist · Rosemont, PA
John Lawrence Duffy, O.D. is an optometrist with a practice address in Rosemont, Pennsylvania, and NPI 1184769713, issued on Feb 21, 2007. Check the license (Pennsylvania OEG001604, 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.
- Name
- John Lawrence Duffy
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OEG001604 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1211 W. Lancaster Ave., Rosemont, PA 19010
- Phone
- (610) 525-2580
- Enumerated
- Feb 21, 2007
- Record last updated
- Sep 11, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (610) 525-2705
- Entity
- Type 1 · individual
8 nearest optometrist records → All 2,640 in Pennsylvania → Look up another NPI →
Also registered at 1211 W. Lancaster Ave.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Min Son, O.D.Optometrist1780931311
Verify John Lawrence Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license OEG001604Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Lawrence Duffy among 2,640 optometrist records in Pennsylvania
John Lawrence Duffy, 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 2007, is newer than 52% of them.
- NPI issued2007 · 52% of these records are older, 38% newer
- In a Medicare fileNo · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2007 · 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).
2 optometrist records list a practice address in Rosemont
They are 2 of the 27 NPPES records with a practice address in Rosemont, and 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 Rosemont → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- David Densmore, O.D.Bryn Mawr, PA 190101730174855
- Janet Schwartz, O.D.Bryn Mawr, PA 190101902870488
- Asal Sepahi, O.D.Bryn Mawr, PA 190101689669020
- Deborah Signorino, ODBryn Mawr, PA 190101013029636
- Min Son, O.D.Rosemont, PA 190101780931311
- Kayla Volkert, ODBryn Mawr, PA 190101790207041
- Steven Zoll, O.D.Bryn Mawr, PA 190101710972831
- Michael Allodoli, ODBroomall, PA 190081255408050
Common questions
What is John Lawrence Duffy, O.D.'s NPI number?
John Lawrence Duffy, O.D.'s National Provider Identifier (NPI) is 1184769713, issued on Feb 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Lawrence Duffy, O.D. located?
The NPPES record lists a practice address at 1211 W. Lancaster Ave., Rosemont, PA, 19010. Phone: (610) 525-2580. Providers update this record themselves, so call before visiting.
How can I verify John Lawrence Duffy, O.D.'s license?
NPPES lists Pennsylvania license number OEG001604, 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.
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.