Doctor profile · Federal record
Dr. Samuel Castillo, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Chicago, IL
- NPI 1205801313
- Accepts Medicare
- 23 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2222 W Division St, Suite 235
Chicago, IL 606222717
(773) 342-6800
fax (773) 342-6332
Credentials & registration
- NPI registered
- February 2006 — 20 yrs on file
- Profile last updated
- March 30, 2021
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Illinois #036122662
- Medicaid
- IL #036122662
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1205801313. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,583
Distinct HCPCS
10
Medicare allowed
$215,930
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 727 | 126 | $125 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 158 | 158 | $119 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 142 | 135 | $97 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 130 | 111 | $182 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 100 | 100 | $143 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 97 | 82 | $133 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 68 | 68 | $241 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 47 | 46 | $94 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 24 | 24 | $176 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 22 | 22 | $192 |
In context: peer comparison
Among 70 peers in Chicago Gastroenterology Physician, average services per provider: 239. This provider delivers 6.6× the peer median.Open Payments
Industry payments received
All-time total
$1,651
Transactions
71
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Takeda Pharmaceuticals U.S.A., INC. | 12 | $257.57 | |
| Ardelyx, INC. | 14 | $226.73 | |
| Abbvie INC. | 12 | $217.30 | |
| Evoke Pharma, INC. | 6 | $216.34 | |
| Madrigal Pharmaceuticals | 2 | $161.33 | |
| Qol Medical, LLC | 6 | $156.03 | |
| Pfizer INC. | 5 | $98.78 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 3 | $62.27 | |
| Mirum Pharmaceuticals, INC. | 2 | $58.64 | |
| Merck Sharp & Dohme LLC | 2 | $49.87 | |
| Regeneron Healthcare Solutions, INC. | 2 | $49.53 | |
| Phathom Pharmaceuticals, INC. | 2 | $43.53 | |
| Ipsen Biopharmaceuticals, INC | 1 | $25.75 | |
| Janssen Biotech, INC. | 1 | $13.79 | |
| Intercept Pharmaceuticals, INC. | 1 | $13.46 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,726
Patients
726
Total drug cost
$346,507
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 724 | 256 | $14,234 |
| Metoclopramide Hcl | Generic | 223 | 99 | $798 |
| Pantoprazole Sodium | Generic | 221 | 81 | $4,061 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 98 | 97 | $1,889 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 79 | 77 | $6,043 |
| Linzess (Linaclotide) | Brand | 57 | 14 | $42,593 |
| Ursodiol | Generic | 50 | 17 | $7,340 |
| Mesalamine ER (Mesalamine) | Brand | 44 | 0 | $15,226 |
| Creon (Lipase/Protease/Amylase) | Brand | 43 | 16 | $138,623 |
| Lactulose | Generic | 38 | 0 | $2,384 |
Frequently asked questions
What is Dr. Samuel Castillo's medical specialty?
Dr. Samuel Castillo practices Gastroenterology Physician in Chicago, IL.
Where does Dr. Samuel Castillo practice?
Dr. Samuel Castillo practices at 2222 W Division St, Chicago, IL 606222717. Office phone: 7733426800.
What is Dr. Samuel Castillo's NPI?
Dr. Samuel Castillo's National Provider Identifier (NPI) is 1205801313, issued by NPPES.
Does Dr. Samuel Castillo accept Medicare assignment?
Yes. Dr. Samuel Castillo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Samuel Castillo commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); New patient office or other outpatient visit (HCPCS 99203); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.