DR. ERNEST WILLIAM KORNMEHL MD
NPI 1104816842
Ophthalmology in Brookline, MA
About Dr. Ernest William Kornmehl Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ERNEST WILLIAM KORNMEHL MD (NPI 1104816842) is an individual ophthalmology provider in Brookline, Massachusetts, licensed in Massachusetts (58784) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS and is a graduate of State University Of New York Downstate Medical Center (1984).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Ernest William Kornmehl Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Ernest Kornmehl reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Brookline, MA 02445
- Reassigned Medicare billing, Massachusetts enrollment
- 7 clinicians in this Medicare group
Wellesley Hills, MA 02481
- Reassigned Medicare billing, Massachusetts enrollment
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 8
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02445 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BROOKLINE, MA 02445
BROOKLINE, MA 02445
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Ernest Kornmehl's NPI number?
The NPI number for Ernest Kornmehl is 1104816842. It was assigned to this individual provider in the NPPES registry on October 25, 2005.
Where is Ernest Kornmehl located?
Ernest Kornmehl practices at 44 Washington St, Brookline, MA 02445. The listed phone number is (617) 232-9600.
What is Ernest Kornmehl's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Ernest Kornmehl enrolled in Medicare?
Yes. Ernest Kornmehl is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ernest Kornmehl's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ernest Kornmehl reassigns Medicare benefits to 2 organizations: Boston Eye Physicians & Surgeons, P.C. (Brookline, MA) and Kornmehl Laser Eye Associates PC (Wellesley Hills, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ernest Kornmehl's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ernest Kornmehl accept?
Health plans from Taro Health list Ernest Kornmehl as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Ernest Kornmehl was last updated on February 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Ernest William Kornmehl, MD · NPI 1104816842
Ophthalmology physician in Brookline, Massachusetts. Individual provider, active in the CMS NPPES registry since October 25, 2005.
## Identity
- **NPI:** 1104816842 (Entity type: Individual)
- **Enumerated:** October 25, 2005
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** 58784 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 44 WASHINGTON ST, Brookline, MA 02445-7130
- **Phone:** (617) 232-9600 · **Fax:** (617) 232-7002
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Boston Eye Physicians & Surgeons, P.C. (NPI 1013041318, Brookline, MA); Kornmehl Laser Eye Associates PC (NPI 1235934274, Wellesley Hills, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York Downstate Medical Center, class of 1984
## Record status
- **NPPES last updated:** February 14, 2025
- **Other identifiers:** Other 058784 (MA); Medicaid 3068820 (MA); Other J09372 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1104816842) · Data from the CMS NPPES public registry.