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David Korsak

  • Hillside, IL
  • Optometrist
NPI1659940492PAC ID7214334333
Industry payments
$38
Affiliated sites
1
Medical group
1
State license
1
Year NPI issued
2021
Practice address
120 S Mannheim Rd, Hillside, IL 60162
Practice phone
Call (708) 547-7312
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Visionworks

Hillside, Illinois

See all 3 affiliations

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David Korsak is an optometrist in Hillside, Illinois

David Korsak practices at Visionworks in Hillside, Illinois.

David Korsak's NPI, 1659940492, was assigned on June 24, 2021. David Korsak graduated from Illinois College of Optometry at Chicago in 2021. David Korsak holds Illinois license 046.011509.

NPI and contact details
NPI
1659940492NPI Registry (opens in a new tab)
Medicare PAC ID
7214334333
NPI enumeration date
June 24, 2021
NPI status
Active
Practice phone
(708) 547-7312
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
31
Medical school graduation
2021

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data

David Korsak practices at Visionworks in Hillside, Illinois

David Korsak's primary practice is Visionworks, at 120 S Mannheim Rd, Hillside, IL 60162 in Cook County. The practice phone is (708) 547-7312.

  • Visionworks
    120 S Mannheim Rd, Hillside, IL 60162 · Cook CountyPhone(708) 547-7312

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

David Korsak is affiliated with 2 sites of care and 1 medical group

David Korsak's primary practice is Visionworks in Hillside, Illinois. Dmand AI also links David Korsak to 1 group practice or clinic and 1 medical group, each named with a free account.

VisionworksHillside, IllinoisPrimary
1 group practice or clinicName with a free account1 medical groupName with a free account
See all 3 affiliations for David Korsak

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at David Korsak's practice

Dmand AI tracks the electronic health record (EHR) system at each site where David Korsak practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
VisionworksAvailable with a free account
+1 more site and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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David Korsak is one of 2,194 optometrists in Illinois

Optometrist is David Korsak's primary specialty in the NPI Registry, under taxonomy code 152W00000X. David Korsak is licensed in Illinois.

Specialties and state licenses

  • Optometrist, IllinoisPrimaryLicense 046.011509 · taxonomy 152W00000X

Optometrists near David Korsak

Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.

2,194optometrists in Illinois

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

David Korsak's patients have a median age of 60

Across all payers, Dmand AI patient panel data puts David Korsak's median patient age at 60, with 61% women.

David Korsak's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 60

Patient panel by sex, all payers

  • Women61%
  • Men39%

Source: Dmand AI Patient Panel Data

David Korsak received $38 in industry payments in 2025

CMS Open Payments shows 2 general payments to David Korsak from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Bausch & Lomb Americas Inc. paid the most, $38.

Companies that paid David Korsak the most, 2025 to 2025

Share is of all general payments to this clinician.

See all payments to David Korsak

Source: Open Payments (CMS), 2025 data, released July 7, 2026

David Korsak graduated from Illinois College of Optometry at Chicago

David Korsak graduated from Illinois College of Optometry at Chicago in 2021.

  1. Medical schoolIllinois College of Optometry at Chicago

Source: Dmand AI Professional Profile Data

Sources for David Korsak's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare patients and the all-payer patient panelDmand AI Patient Panel Data
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about David Korsak

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is David Korsak's NPI number?

David Korsak's NPI number is 1659940492. It was assigned on June 24, 2021, and it is active in the NPI Registry.

What does David Korsak specialize in?

David Korsak is an optometrist in Hillside, Illinois. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).

Where does David Korsak practice?

David Korsak practices at 120 S Mannheim Rd, Hillside, IL 60162. David Korsak's primary practice is Visionworks in Hillside, Illinois. Dmand AI also links David Korsak to 1 group practice or clinic and 1 medical group.

What is David Korsak's office phone number?

The practice phone on file for David Korsak is (708) 547-7312.

What is David Korsak's medical license number?

David Korsak holds Illinois license 046.011509.

Where did David Korsak go to medical school?

David Korsak graduated from Illinois College of Optometry at Chicago in 2021.

Has David Korsak received payments from drug or device companies?

CMS Open Payments shows $38 in general payments to David Korsak from 1 company from 2025 to 2025. The largest total came from Bausch & Lomb Americas Inc.

How long has David Korsak been practicing?

David Korsak graduated from medical school in 2021, 5 years ago.

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