Stefan S. O'Connor, M.D.
Ophthalmology Physician · Wilmington, DE
Stefan S. O'Connor, M.D. is an ophthalmology physician with a practice address in Wilmington, Delaware, and NPI 1023089489, issued on Feb 1, 2006. Check the license (Delaware C1-0003896, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Stefan S. O'Connor
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- C1-0003896 DE
Self-reported in NPPES; status is on the state search - Practice location
- 2055 Limestone RD, Wilmington, DE 19808
- Phone
- (302) 992-0238
- Enumerated
- Feb 1, 2006
- Record last updated
- Aug 20, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicaid ID
- 0000415101 DE
- Medicare enrollment
- Enrolled (PECOS I20091221000467); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 1988
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 65 in Delaware → Look up another NPI →
Also registered at 2055 Limestone RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Franklin Ampadu, M.D.Internal Medicine Physician1245236843
- Genevieve Aucoin, MA, MT-BC, LACMHMental Health Counselor1225924301
- Connie Bryner, C.HTSpecialist1831757814
- Dennis Carradin, MED., LPCMH, BCETSMental Health Counselor1952515454
- Jose Marciano Castro, MDInternal Medicine Physician1083792352
- Marcia Gina Castro, MDInternal Medicine Physician1407934789
Verify Stefan S. O'Connor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
Search for license C1-0003896Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average ophthalmology physician in 2024
639 Medicare Part D claims for 154 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Latanoprost170 claims
- Ofloxacin135 claims
- Dorzolamide Hcl57 claims
- Diclofenac Sodium51 claims
- Brimonidine Tartrate39 claims
- Timolol Maleate39 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Stefan S. O'Connor among 65 ophthalmology physician records in Delaware
Stefan S. O'Connor, M.D. is one of 65 ophthalmology physician records with a practice address in Delaware. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 28% of them.
- NPI issued2006 · 28% of these records are older, 37% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1988 · median 1996 among the 39 with a school on file
- Record last updated2008 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Delaware
There are 65 ophthalmology physician records in Delaware.
All 65 in Delaware → Every provider in Wilmington → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Sean Considine, MDWilmington, DE 198081861029068
- Heather Dealy, MDWilmington, DE 198081265424170
- John Ferguson, MDWilmington, DE 198081790780534
- Julianne Lin, M.D.Wilmington, DE 198081396742839
- Dorothy Moore, M.D.Wilmington, DE 198081063419349
- Stewert Smith, MDWilmington, DE 198081306841010
- Robert Abel, M.D.Wilmington, DE 198101699719815
- Tabassum Ali, MDWilmington, DE 198101225267362
Common questions
What is Stefan S. O'Connor, M.D.'s NPI number?
Stefan S. O'Connor, M.D.'s National Provider Identifier (NPI) is 1023089489, issued on Feb 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stefan S. O'Connor, M.D. located?
The NPPES record lists a practice address at 2055 Limestone RD, Wilmington, DE, 19808. Phone: (302) 992-0238. Providers update this record themselves, so call before visiting.
How can I verify Stefan S. O'Connor, M.D.'s license?
NPPES lists Delaware license number C1-0003896, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stefan S. O'Connor, M.D. prescribe under Medicare Part D?
In 2024, Stefan S. O'Connor, M.D. had 639 Medicare Part D claims for 154 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions 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. Medicare files from data.cms.gov. 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.