Ernest William Kornmehl, MD
Ophthalmology Physician · Brookline, MA
Ernest William Kornmehl, MD is an ophthalmology physician with a practice address in Brookline, Massachusetts, and NPI 1104816842, issued on Oct 25, 2005. Check the license (Massachusetts 58784, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Ernest William Kornmehl
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 58784 MA
Self-reported in NPPES; status is on the state search - Practice location
- 44 Washington St, Brookline, MA 02445
- Phone
- (617) 232-9600
- Enumerated
- Oct 25, 2005
- Record last updated
- Feb 14, 2025
- Fax
- (617) 232-7002
- Medicaid ID
- 3068820 MA
- Medicare enrollment
- Enrolled (PECOS I20060330000630); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 1984
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 791 in Massachusetts → Look up another NPI →
Also registered at 44 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charlene Carroll, AU.D.Audiologist1770886590
- Anthony Fraioli, M.D.Ophthalmology Physician1619951878
- Robert Gorn, MDOphthalmology Physician1902896202
- Kevin Kaufmann, MD PHDOphthalmology Physician1497736391
- Robert Sanderson, M.A.Audiologist-Hearing Aid Fitter1508070079
- Felix ShlosmanOptician1154748978
Verify Ernest William Kornmehl in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 58784Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average ophthalmology physician in 2024
174 Medicare Part D claims for 65 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 54% of claims.
Most prescribed
- Restasis37 claims
- Doxycycline Hyclate32 claims
- Xiidra25 claims
- Ofloxacin19 claims
- Acyclovir16 claims
- Prednisolone Acetate16 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: $27.16
1 payment: food and beverage; the largest payer was Amgen Inc. The 13,221 providers of this specialty with any payment received $4,535.02 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 Eye Physicians And Surgeons, P.C.Brookline, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ernest William Kornmehl among 791 ophthalmology physician records in Massachusetts
Ernest William Kornmehl, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 77% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1984 · median 2002 among the 518 with a school on file
- Record last updated2025 · 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).
19 ophthalmology physician records list a practice address in Brookline
They are 19 of the 2,357 NPPES records with a practice address in Brookline, and 791 ophthalmology physician records in Massachusetts.
All 791 in Massachusetts → Every provider in Brookline → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Jorge Arroyo, M.D., MPHBrookline, MA 024451942248257
- Jason Brenner, M.D.Brookline, MA 024451750674719
- Macie Finkelstein, M.D.Brookline, MA 024451114959640
- Anthony Fraioli, M.D.Brookline, MA 024451619951878
- David Gendelman, MDBrookline, MA 024451730186818
- Robert Gorn, MDBrookline, MA 024451902896202
- Perla Ibrahim, MDBrookline, MA 024451558136051
- Kevin Kaufmann, MD PHDBrookline, MA 024451497736391
Common questions
What is Ernest William Kornmehl, MD's NPI number?
Ernest William Kornmehl, MD's National Provider Identifier (NPI) is 1104816842, issued on Oct 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ernest William Kornmehl, MD located?
The NPPES record lists a practice address at 44 Washington St, Brookline, MA, 02445. Phone: (617) 232-9600. Providers update this record themselves, so call before visiting.
How can I verify Ernest William Kornmehl, MD's license?
NPPES lists Massachusetts license number 58784, 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 Ernest William Kornmehl, MD prescribe under Medicare Part D?
In 2024, Ernest William Kornmehl, MD had 174 Medicare Part D claims for 65 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.