Gregory George Gensheimer, M.D.
Ophthalmology Physician · Brunswick, ME
Gregory George Gensheimer, M.D. is an ophthalmology physician with a practice address in Brunswick, Maine, and NPI 1740202621, issued on Jul 23, 2006. Check the license (Maine 10700, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Gregory George Gensheimer
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 10700 ME
Self-reported in NPPES; status is on the state search - Practice location
- 8 Mason St, Brunswick, ME 04011
- Phone
- (207) 729-7971
- Enumerated
- Jul 23, 2006
- Record last updated
- Feb 8, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (207) 725-7910
- Medicare enrollment
- Enrolled (PECOS I20050623000437); accepts Medicare assignment
- Medical or professional school
- University Of Rochester School Of Medicine And Dentistry, 1977
- Entity
- Type 1 · individual
Also registered at 8 Mason St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marybeth Ford, MDOphthalmology Physician1083744429
- Kurt Kelley, M.D.Ophthalmology Physician1013030378
- Mark NickersonOptician1710181045
- Andreas Thyssen, M.D.Internal Medicine Physician1215373279
Verify Gregory George Gensheimer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license 10700Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average ophthalmology physician in 2024
757 Medicare Part D claims for 149 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Latanoprost217 claims
- Dorzolamide-Timolol98 claims
- Lumigan42 claims
- Brimonidine Tartrate40 claims
- Rhopressa34 claims
- Travoprost30 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.
The MIPS final score for 2023 (Medicare payment program): 98.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- MainehealthBath, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ophthalmology Physician providers in Maine
There are 98 ophthalmology physician records in Maine.
Other ophthalmology physician records in Maine
- Atish AminPortland, ME1154066173
- Frederick Armbruster, MDKittery, ME1699746362
- William Atlee, M.D.Augusta, ME1548236532
- Mark Balles, M.D.Portland, ME1780654392
- Oscar Batlle, M.D.Bangor, ME1447465737
- A Berlin, M.D.Portland, ME1760414734
- Margaret Blom, MDEllsworth, ME1205994415
- Allan Bogdan, MDRockport, ME1205036472
- John Bowman, M.D.Bangor, ME1396731006
- Richard Brown, M.D.Farmington, ME1235108630
Common questions
What is Gregory George Gensheimer, M.D.'s NPI number?
Gregory George Gensheimer, M.D.'s National Provider Identifier (NPI) is 1740202621, issued on Jul 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory George Gensheimer, M.D. located?
The NPPES record lists a practice address at 8 Mason St, Brunswick, ME, 04011. Phone: (207) 729-7971. Providers update this record themselves, so call before visiting.
How can I verify Gregory George Gensheimer, M.D.'s license?
NPPES lists Maine license number 10700, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory George Gensheimer, M.D. prescribe under Medicare Part D?
In 2024, Gregory George Gensheimer, M.D. had 757 Medicare Part D claims for 149 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Gregory George Gensheimer, M.D.'s MIPS final score?
The 2023 MIPS final score is 98.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.