Doctor profile · Federal record
Dr. Stephen Ang, MD
Gastroenterology Physician (CMS: Gastroenterology) · Centralia, IL
- NPI 1346251071
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 35 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1054 M L King Dr, Suite 120
Centralia, IL 628013000
(618) 532-1688
fax (618) 532-1689
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 1991 — 35 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1346251071. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,731
Distinct HCPCS
10
Medicare allowed
$213,768
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 606 | 382 | $86 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 282 | 226 | $122 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 228 | 228 | $159 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 102 | 102 | $105 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 94 | 94 | $108 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 89 | 89 | $177 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 79 | 79 | $244 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 56 | 56 | $89 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 52 | 52 | $178 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 35 | 32 | $127 |
In context: peer comparison
Among 1 peers in Centralia Gastroenterology Physician, average services per provider: 123. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$1,011
Transactions
46
Manufacturers
9
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Ironwood Pharmaceuticals, INC | 24 | $386.10 | |
| Braintree Laboratories, INC. | 4 | $135.44 | |
| Regeneron Healthcare Solutions, INC. | 5 | $131.47 | |
| Genzyme Corporation | 5 | $118.56 | |
| Janssen Biotech, INC. | 1 | $84.00 | |
| Pfizer INC. | 3 | $57.58 | |
| Becton, Dickinson and Company | 1 | $45.00 | |
| Abbvie INC. | 2 | $35.60 | |
| Ardelyx, INC. | 1 | $17.45 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,894
Patients
837
Total drug cost
$199,515
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 548 | 202 | $7,797 |
| Omeprazole | Generic | 421 | 113 | $6,828 |
| Cholestyramine (Cholestyramine (With Sugar)) | Brand | 119 | 52 | $9,756 |
| Colestipol Hcl | Generic | 119 | 33 | $7,496 |
| Glycopyrrolate | Generic | 112 | 46 | $2,809 |
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 104 | 102 | $2,438 |
| Linzess (Linaclotide) | Brand | 101 | 43 | $103,993 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 99 | 99 | $8,247 |
| Mesalamine | Generic | 56 | 12 | $32,511 |
| Dicyclomine Hcl | Generic | 53 | 18 | $981 |
Frequently asked questions
What is Dr. Stephen Ang's medical specialty?
Dr. Stephen Ang practices Gastroenterology Physician in Centralia, IL.
Where does Dr. Stephen Ang practice?
Dr. Stephen Ang practices at 1054 M L King Dr, Centralia, IL 628013000. Office phone: 6185321688.
What is Dr. Stephen Ang's NPI?
Dr. Stephen Ang's National Provider Identifier (NPI) is 1346251071, issued by NPPES.
Does Dr. Stephen Ang accept Medicare assignment?
Yes. Dr. Stephen Ang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Stephen Ang commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.