Doctor profile · Federal record
Dr. Gene Chiao, MD
Internal Medicine Physician · Northbrook, IL
- NPI 1699733188
- MIPS 90.4 / 100 · 2023
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
40 Skokie Blvd., Suite 110
Northbrook, IL 600621614
(224) 207-4400
fax (224) 407-2255 - Mailing address
-
950 Technology Way, Suite 250
Libertyville, IL 600485366
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- September 26, 2025
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Illinois #036-079891
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1699733188. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
888
Distinct HCPCS
10
Medicare allowed
$122,483
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 171 | 171 | $266 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 135 | 135 | $74 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 122 | 61 | $125 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 78 | 78 | $96 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 78 | 78 | $102 | |
G0500 |
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 67 | 67 | $6 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 63 | 62 | $150 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 60 | 60 | $194 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 30 | 30 | $182 | |
91010 |
Study of esophagus to assess movement | 23 | 22 | $65 |
In context: peer comparison
Among 8 peers in Northbrook Internal Medicine Physician, average services per provider: 94. This provider delivers 9.4× the peer median.Open Payments
Industry payments received
All-time total
$3,480
Transactions
136
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Takeda Pharmaceuticals U.S.A., INC. | 28 | $610.77 | |
| Janssen Biotech, INC. | 15 | $603.82 | |
| Abbvie INC. | 25 | $579.79 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 10 | $185.35 | |
| Pfizer INC. | 11 | $184.79 | |
| Phathom Pharmaceuticals, INC. | 7 | $151.15 | |
| Ardelyx, INC. | 8 | $148.25 | |
| Lilly USA, LLC | 5 | $130.31 | |
| Regeneron Healthcare Solutions, INC. | 4 | $126.12 | |
| Madrigal Pharmaceuticals | 5 | $103.48 | |
| Celltrion USA INC. | 4 | $101.63 | |
| Celgene Corporation | 6 | $101.55 | |
| Intercept Pharmaceuticals, INC. | 3 | $76.27 | |
| Merck Sharp & Dohme LLC | 3 | $64.73 | |
| Genzyme Corporation | 2 | $62.09 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,179
Patients
529
Total drug cost
$86,221
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gavilyte-C (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 203 | 202 | $3,992 |
| Escitalopram Oxalate | Generic | 184 | 50 | $3,217 |
| Citalopram Hbr (Citalopram Hydrobromide) | Brand | 102 | 34 | $1,240 |
| Omeprazole | Generic | 97 | 29 | $2,503 |
| Pantoprazole Sodium | Generic | 96 | 36 | $2,272 |
| Dicyclomine Hcl | Generic | 95 | 29 | $2,500 |
| Desvenlafaxine Succinate ER (Desvenlafaxine Succinate) | Brand | 78 | 19 | $5,439 |
| Sertraline Hcl | Generic | 72 | 25 | $878 |
| Clonazepam | Generic | 53 | 0 | $1,140 |
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 49 | 49 | $1,049 |
Frequently asked questions
What is Dr. Gene Chiao's medical specialty?
Dr. Gene Chiao practices Internal Medicine Physician in Northbrook, IL.
Where does Dr. Gene Chiao practice?
Dr. Gene Chiao practices at 40 Skokie Blvd., Northbrook, IL 600621614. Office phone: 2242074400.
What is Dr. Gene Chiao's NPI?
Dr. Gene Chiao's National Provider Identifier (NPI) is 1699733188, issued by NPPES.
What procedures does Dr. Gene Chiao commonly perform?
Top Medicare-reported procedures in 2023: Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Biopsy of large bowel using a flexible endoscope (HCPCS 45380); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.