Internal Medicine, Gastroenterology · Saint Louis, MO
NPI
1588691265
Since 2006
Specialty
Internal Medicine, Gastroenterology
Code 207RG0100X
Group practices
1
Medicare group memberships
Hospitals
5
Hospital affiliations
4921 Parkview Pl, Div Im Gastroenterology, Ste 10b
Saint Louis, MO, 63110
Phone (314) 747-2066
Groups this clinician bills Medicare through
Medicare paid, 2024
$48K
431 services
Medicare patients, 2024
283
Average age 72
Drug cost, 2024
$4.5M
1,634 prescriptions
Company payments, 2025
$238
From 2 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Chien-Huan Chen was code 99214 (office e&m - established), 115 times for 98 patients. In total Chien-Huan Chen billed 431 services in 31 codes, and Medicare paid $48K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2025-04-15.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99214 Office E&M - Established | Office | 115 | 98 | $85.97 | $9,887 |
| 45385 Colonoscopy - Lesion Removal | Facility | 76 | 76 | $198.88 | $15K |
| 45380 Lower GI Endoscopy - Other | Facility | 53 | 53 | $91.46 | $4,848 |
| 43239 Upper GI Endoscopy | Facility | 28 | 27 | $59.49 | $1,666 |
| 99204 Office E&M - New | Office | 24 | 24 | $101.76 | $2,442 |
| 43235 Upper GI Endoscopy | Facility | 18 | 16 | $68.34 | $1,230 |
| 99215 Office E&M - Established | Office | 17 | 12 | $138.31 | $2,351 |
| 99222 Hospital E&M - Initial | Facility | 16 | 16 | $100.12 | $1,602 |
| G0105 Colorectal cancer screening; colonoscopy on individual at high risk | Facility | 15 | 15 | $175.12 | $2,627 |
| 99213 Office E&M - Established | Office | 14 | 14 | $69.64 | $975 |
| 43249 Upper GI Endoscopy | Facility | 11 | 11 | $91.47 | $1,006 |
By year: 2022 $57K for 519 services; 2023 $59K for 513 services; 2024 $48K for 431 services.
Medicare prescription drug claims, 2024
In 2024, the drug Chien-Huan Chen prescribed most often to Medicare patients was Omeprazole, with 189 prescriptions and refills. In total Chien-Huan Chen wrote 1,634 Medicare prescriptions that cost $4.5M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Omeprazole Generic | 189 | 444 | 58 | $2,555 |
| Sod Sulf-Potass Sulf-Mag Sulf Sodium, Potassium,mag Sulfates | 112 | 112 | 112 | $6,980 |
| Mesalamine Generic | 89 | 167 | 22 | $54K |
| Stelara Ustekinumab | 85 | 114 | 12 | $2.7M |
| Azathioprine Generic | 72 | 194 | 23 | $2,749 |
| Pantoprazole Sodium Generic | 54 | 147 | 19 | $829 |
| Sodium Chloride 0.9 % Sodium Chloride | 52 | 57 | Under 11 | $518 |
| Gavilyte-G Peg3350/Sod Sulf,bicarb,cl/Kcl | 52 | 52 | 52 | $641 |
| Sulfasalazine Generic | 45 | 117 | Under 11 | $1,764 |
| Loperamide Loperamide Hcl | 42 | 78 | 14 | $3,354 |
| Mesalamine Er Mesalamine | 35 | 63 | Under 11 | $4,211 |
| Allopurinol Generic | 32 | 96 | Under 11 | $209 |
| Famotidine Generic | 31 | 39 | Under 11 | $255 |
| Octreotide Acetate Generic | 30 | 43 | Under 11 | $11K |
| Humira(Cf) Pen Adalimumab | 28 | 30 | Under 11 | $652K |
Brand drugs: 472 claims; generic drugs: 1,136 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Chien-Huan Chen $238 ($238 in general payments such as food, travel and fees) from 2 companies. The largest payer was Cook Medical LLC with $154.
| Company | Payments | Amount |
|---|---|---|
| Cook Medical LLC | 1 | $154 |
| Janssen Biotech, Inc. JNJ | 1 | $84 |
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.