James F. Gregoire, MD
Cornea and External Diseases Specialist Physician · Brookline, MA
James F. Gregoire, MD is a cornea and external diseases specialist physician with a practice address in Brookline, Massachusetts, and NPI 1639673676, issued on Mar 23, 2018. Check the license (Massachusetts 291290, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- James F. Gregoire
- Credential
- MD
- Primary taxonomy
- Cornea and External Diseases Specialist Physician 207WX0120X
- License number
- 291290 MA
Self-reported in NPPES; status is on the state search - Practice location
- 24 Webster PL, Brookline, MA 02445
- Phone
- (617) 202-2020
- Enumerated
- Mar 23, 2018
- Record last updated
- Apr 24, 2026
- Fax
- (617) 734-3264
- Medicare enrollment
- Enrolled (PECOS I20220606002038); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest cornea and external diseases specialist physician records → All 10 in Massachusetts → Look up another NPI →
Also registered at 24 Webster PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Claudia Arrigg, M.D.Specialist1093793564
- Jorge Arroyo, M.D., MPHOphthalmology Physician1942248257
- Jason Brenner, M.D.Ophthalmology Physician1750674719
- Stivia Demiri, ODOptometrist1528735693
- Stephanie Dunker, O.D.Optometrist1447563747
- Macie Finkelstein, M.D.Ophthalmology Physician1114959640
Verify James F. Gregoire in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 291290Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average cornea and external diseases specialist physician in 2024
601 Medicare Part D claims for 247 beneficiaries, against an average of 1,263 among the 330 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Ketorolac Tromethamine131 claims
- Latanoprost93 claims
- Dorzolamide-Timolol43 claims
- Brimonidine Tartrate40 claims
- Prednisolone Acetate34 claims
- Dorzolamide Hcl31 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.
Industry payments in 2024: $491.73
23 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 284 providers of this specialty with any payment received $3,109.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Boston Laser Eye Institute PCBrookline, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James F. Gregoire among 10 cornea and external diseases specialist physician records in Massachusetts
James F. Gregoire, MD is one of 10 cornea and external diseases specialist physician records with a practice address in Massachusetts. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 40% of them.
- NPI issued2018 · 40% of these records are older, 30% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Record last updated2026 · 10% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0120X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cornea and External Diseases Specialist Physician providers in Massachusetts
There are 10 cornea and external diseases specialist physician records in Massachusetts.
All 10 in Massachusetts → Every provider in Brookline → Cornea and External Diseases Specialist Physician nationwide →
The 8 cornea and external diseases specialist physician records with the nearest ZIP codes
- Crystal Zhang, MDWaltham, MA 024511376047415
- Sara King-Sella, MDBoston, MA 022151417505082
- Walid Sabbah, M.D.Boston, MA 022151295628626
- Azin Abazari, MDBoston, MA 021141164625133
- Stephan Ong Tone, MDCM, PHD, FRCSCBoston, MA 021141538646989
- Jae Young You, M.D.Boston, MA 021141518250679
- Paul ZhouBoston, MA 021141396494043
- Prachi Dua, M.D.Andover, MA 018101922341247
Common questions
What is James F. Gregoire, MD's NPI number?
James F. Gregoire, MD's National Provider Identifier (NPI) is 1639673676, issued on Mar 23, 2018. An NPI identifies a provider in billing; it is not a license.
Where is James F. Gregoire, MD located?
The NPPES record lists a practice address at 24 Webster PL, Brookline, MA, 02445. Phone: (617) 202-2020. Providers update this record themselves, so call before visiting.
How can I verify James F. Gregoire, MD's license?
NPPES lists Massachusetts license number 291290, 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 James F. Gregoire, MD prescribe under Medicare Part D?
In 2024, James F. Gregoire, MD had 601 Medicare Part D claims for 247 beneficiaries; the average among cornea and external diseases specialist physician prescribers was 1,263. 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.