Daniel J. O'Connor
Ophthalmology Physician · Plymouth, MA
Daniel J. O'Connor is an ophthalmology physician with a practice address in Plymouth, Massachusetts, and NPI 1194794958, issued on Mar 15, 2006. Check the license (Massachusetts 80113, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Daniel J. O'Connor
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 80113 MA
Self-reported in NPPES; status is on the state search - Practice location
- 146 Industrial Park RD, Plymouth, MA 02360
- Phone
- (508) 833-6000
- Enumerated
- Mar 15, 2006
- Record last updated
- Jan 12, 2022
- Fax
- (508) 534-6060
- Medicaid IDs
- 110056437A MA
3145051 MA - Medicare enrollment
- Enrolled (PECOS I20050606001075); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 791 in Massachusetts → Look up another NPI →
Also registered at 146 Industrial Park RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Roger Bush, O.D.Optometrist1063481661
- David Reed, M.D.Retina Specialist (Ophthalmology) Physician1932330990
- Lisa Rubin, ODOptometrist1942214564
Verify Daniel J. O'Connor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 80113Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.2 times the Medicare Part D claims of the average ophthalmology physician in 2024
7,929 Medicare Part D claims for 1,934 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of claims.
Most prescribed
- Prednisolone Acetate2,409 claims
- Ketorolac Tromethamine1,959 claims
- Ofloxacin1,554 claims
- Latanoprost702 claims
- Timolol Maleate461 claims
- Dorzolamide-Timolol187 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.
Bills Medicare through one group practice
- Ophthalmic Consultants OF Boston IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Daniel J. O'Connor among 791 ophthalmology physician records in Massachusetts
Daniel J. O'Connor is one of 791 ophthalmology physician records with a practice address in Massachusetts. 76% 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 23% of them.
- NPI issued2006 · 23% of these records are older, 48% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1987 · median 2002 among the 518 with a school on file
- Record last updated2022 · 65% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Massachusetts
There are 791 ophthalmology physician records in Massachusetts.
All 791 in Massachusetts → Every provider in Plymouth → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Allan Berg, M.D.Plymouth, MA 023601730158759
- Eddie Kadrmas, M.D.Plymouth, MA 023601124097241
- Henry Kriegstein, M.D.Plymouth, MA 023601548379654
- Charles Post, M.D.Plymouth, MA 023601790753895
- Lois Townshend, M.D.Plymouth, MA 023601356450456
- Kambiz Negahban, MDNorth Easton, MA 023561881680544
- Paul Cotter, MDBrockton, MA 023011699745521
- Karina Lund, M.D.Brockton, MA 023011861667594
Common questions
What is Daniel J. O'Connor's NPI number?
Daniel J. O'Connor's National Provider Identifier (NPI) is 1194794958, issued on Mar 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Daniel J. O'Connor located?
The NPPES record lists a practice address at 146 Industrial Park RD, Plymouth, MA, 02360. Phone: (508) 833-6000. Providers update this record themselves, so call before visiting.
How can I verify Daniel J. O'Connor's license?
NPPES lists Massachusetts license number 80113, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Daniel J. O'Connor prescribe under Medicare Part D?
In 2024, Daniel J. O'Connor had 7,929 Medicare Part D claims for 1,934 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.