Doctor profile · Federal record
Dr. David Korsak
Optometrist (CMS: Optometry) · Chicago, IL
- NPI 1659940492
- 5 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
845 N Ashland Ave
Chicago, IL 606225149
(312) 942-0407
Credentials & registration
- NPI registered
- June 2021 — 5 yrs on file
- Year of graduation
- 2021 — 5 yrs since
- Specialty taxonomy
- 152W00000X — NUCC code
- State license (1)
- Illinois #046.011509
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1659940492. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$138
Transactions
3
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Bausch & Lomb Americas INC. | 2 | $119.92 | |
| CooperVision INC. | 1 | $18.38 |
By nature of payment
Frequently asked questions
What is Dr. David Korsak's medical specialty?
Dr. David Korsak practices Optometrist in Chicago, IL.
Where does Dr. David Korsak practice?
Dr. David Korsak practices at 845 N Ashland Ave, Chicago, IL 606225149. Office phone: 3129420407.
What is Dr. David Korsak's NPI?
Dr. David Korsak's National Provider Identifier (NPI) is 1659940492, issued by NPPES.
Does Dr. David Korsak accept Medicare assignment?
Dr. David Korsak does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.