Doctor profile · Federal record
Dr. Gregory Clark, M.D.
Endocrinology, Diabetes & Metabolism Physician · Buffalo Grove, IL
- NPI 1053363952
- 20 yrs on file
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
355 W Dundee RD Ste 110
Buffalo Grove, IL 600893500
(847) 541-4878
fax (847) 520-0500 - Mailing address
-
920 Grandview Ln
Lake Forest, IL 600453914
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- July 26, 2023
- Specialty taxonomy
- 207RE0101X — NUCC code
- State license (1)
- Illinois #336.093729
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1053363952. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$426
Transactions
8
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Tandem Diabetes Care, Inc. | 1 | $157.58 | |
| Mannkind Corporation | 2 | $126.01 | |
| SANOFI-AVENTIS U.S. LLC | 3 | $99.55 | |
| Novo Nordisk Inc | 2 | $43.17 |
By nature of payment
Frequently asked questions
What is Dr. Gregory Clark's medical specialty?
Dr. Gregory Clark practices Endocrinology, Diabetes & Metabolism Physician in Buffalo Grove, IL.
Where does Dr. Gregory Clark practice?
Dr. Gregory Clark practices at 355 W Dundee RD Ste 110, Buffalo Grove, IL 600893500. Office phone: 8475414878.
What is Dr. Gregory Clark's NPI?
Dr. Gregory Clark's National Provider Identifier (NPI) is 1053363952, issued by NPPES.