DR. ERNEST WILLIAM KORNMEHL (MD) – Ophthalmology Physician, NPI 1104816842

DR. ERNEST WILLIAM KORNMEHL (MD) is a healthcare provider. based in Charlestown, Massachusetts. specializing in OPHTHALMOLOGY. They hold the professional credentials MD. They hold a License No. 58784 (MA). The NPI Number for DR. ERNEST WILLIAM KORNMEHL (MD) is 1104816842

Main info

Male
42 Years Of Experience
Accepts Medicare Assignment
Name
DR. ERNEST WILLIAM KORNMEHL (MD)
NPI
1104816842
Phone
(617) 724-0287
Address
PO BOX 9142
Enumeration Date
25 October 2005
Last Update Date
14 February 2025

Doctor Profile

Medical School Name
STATE UNIVERSITY OF NEW YORK DOWNSTATE MEDICAL CENTER
Secondary Phone
6172329600
Graduation Year
1984 (42 years ago)
PAC ID
4183632243
Group Practice PAC ID
0244393973
Professional Enrollment ID
I20060330000630
Address ID
MA024457167BR44XXXSTXX304
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience64
Completeness75
Years active:20State licenses:1Digital endpointsOther names

801 OPHTHALMOLOGY in MA

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Provider Addresses for DR. ERNEST WILLIAM KORNMEHL (MD)

  • Charlestown Post Office (mobile), Pattern Close, St Austell Bay, Charlestown, Cornwall, England, PL25 3FQ, United Kingdom

    MASS GENERAL PHYSICIAN ORGANIZATION

    CHARLESTOWN, MA 021299142

    Phone: (617) 724-0287

    Fax: (617) 726-2894

    Type: Mailing

  • City View Tower, 44, Washington Street, Brookline Village, Brookline, Norfolk County, Massachusetts, 02130-4803, United States

    BROOKLINE, MA 024457130

    Phone: (617) 232-9600

    Fax: (617) 232-7002

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 3 Open Payments records for all available years, with a total value of $55.

Total Amount is formed as General ($55) + Research ($0) + Ownership ($0) = $55.

Last reported payment date: 2024-05-02 • Largest payer in this snapshot: Johnson & Johnson Surgical Vision, Inc. ($28).

Total Amount

$55

General + Research + Ownership

Payments

3

Total payment records

General Amount

$55

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

1

Ownership records

Last Payment Date

2024-05-02

Latest reported date

Top Companies

Largest payers in this snapshot

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2006-03-30

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20060330000630IOphthalmologyMATBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
68761Closure of tear duct opening using plug540229$0
99213Established patient office or other outpatient visit, 20-29 minutes528210$0
92012Established patient problem focused exam of visual system200106$0
92250Photography of the retina5353$0
92014Established patient complete exam of visual system4241$0
View full utilization report →

Insurance plans in this area (ZIP 02129)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 0244393973View full group profile
NameSpecialtyState
O P H T H A L M O L O G YMA
O P H T H A L M O L O G YMA
O P H T H A L M O L O G YMA
O P H T H A L M O L O G YMA
O P H T H A L M O L O G YMA

Reviews

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Frequently asked questions

What is the 10-digit NPI for DR. ERNEST WILLIAM KORNMEHL (MD)?
DR. ERNEST WILLIAM KORNMEHL (MD) — NPI 1104816842 — is the standard way to identify this listing.
Does the file indicate DR. ERNEST WILLIAM KORNMEHL (MD) is practicing under active NPI?
Directory data currently reports DR. ERNEST WILLIAM KORNMEHL (MD) as active.
What is DR. ERNEST WILLIAM KORNMEHL (MD)'s specialty?
The listing groups DR. ERNEST WILLIAM KORNMEHL (MD) with Ophthalmology Physician. Clinical services aligned with this taxonomy classification.
Does DR. ERNEST WILLIAM KORNMEHL (MD) list a practice location?
Patients near Charlestown, Massachusetts may find DR. ERNEST WILLIAM KORNMEHL (MD) in results; validate coverage separately.
How many locations tie to this NPI?
2 practice locations appear in the available data.

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