Doctor profile · Federal record
Dr. Nadeem Siddiqui, MD
Gastroenterology Physician (CMS: Gastroenterology) · Gastroenterology Physician · McHenry, IL
- NPI 1770577785
- Accepts Medicare
- 36 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
4309 W Medical Center Dr Ste B202
McHenry, IL 600508417
(847) 535-6083
fax (815) 455-2789 - Additional location
-
2700 E Enterprise Ave,, Unit C
Appleton, WI 54913
(920) 738-7300
fax (920) 738-7301 - Mailing address
-
1726 Shawano Ave
Green Bay, WI 543033216
Credentials & registration
- NPI registered
- September 2005 — 21 yrs on file
- Profile last updated
- July 3, 2025
- Year of graduation
- 1990 — 36 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (2)
- Illinois #036175750 · Wisconsin #35007
- Medicaid
- WI #33328600
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1770577785. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
150
Distinct HCPCS
6
Medicare allowed
$17,537
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 52 | 51 | $91 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 35 | 35 | $124 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 22 | 21 | $109 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 14 | 13 | $187 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 14 | 14 | $75 | |
43255 |
Control of bleeding of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 13 | 13 | $186 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 68. This provider delivers 2.2× the peer median.Open Payments
Industry payments received
All-time total
$20
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 1 | $20.27 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
21
Patients
0
Total drug cost
$322
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 21 | 0 | $322 |
Frequently asked questions
What is Dr. Nadeem Siddiqui's medical specialty?
Dr. Nadeem Siddiqui practices Gastroenterology Physician in McHenry, IL.
Where does Dr. Nadeem Siddiqui practice?
Dr. Nadeem Siddiqui practices at 4309 W Medical Center Dr Ste B202, McHenry, IL 600508417. Office phone: 8475356083.
What is Dr. Nadeem Siddiqui's NPI?
Dr. Nadeem Siddiqui's National Provider Identifier (NPI) is 1770577785, issued by NPPES.
Does Dr. Nadeem Siddiqui accept Medicare assignment?
Yes. Dr. Nadeem Siddiqui accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nadeem Siddiqui commonly perform?
Top Medicare-reported procedures in 2023: Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43235). Source: CMS Medicare Physician & Other Practitioners file.