Total Payments
$29,963
2024 Payments
$1,882
Companies
45
Transactions
774
Medicare Patients
5,161
Medicare Billing
$679,860
Payment Breakdown by Category
Other$16,076 (53.7%)
Food & Beverage$13,857 (46.2%)
Education$30.46 (0.1%)
Payments by Nature
| Nature of Payment | Amount | Transactions | Share |
|---|---|---|---|
| Debt forgiveness | $15,851 | 1 | 52.9% |
| Food and Beverage | $13,857 | 767 | 46.2% |
| Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | $225.00 | 1 | 0.8% |
| Education | $30.46 | 5 | 0.1% |
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| Olympus America Inc. | $15,851 | 1 | $0 (2023) |
| ABBVIE INC. | $3,686 | 206 | $0 (2024) |
| Takeda Pharmaceuticals U.S.A., Inc. | $1,362 | 50 | $0 (2024) |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | $1,189 | 79 | $0 (2024) |
| Gilead Sciences, Inc. | $753.42 | 31 | $0 (2024) |
| Janssen Biotech, Inc. | $682.19 | 51 | $0 (2024) |
| IRONWOOD PHARMACEUTICALS, INC | $571.15 | 36 | $0 (2024) |
| Allergan, Inc. | $549.96 | 41 | $0 (2020) |
| QOL Medical, LLC | $535.54 | 36 | $0 (2021) |
| Braintree Laboratories, Inc. | $514.05 | 32 | $0 (2024) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2024 | $1,882 | 95 | ABBVIE INC. ($652.21) |
| 2023 | $17,452 | 95 | Olympus America Inc. ($15,851) |
| 2022 | $1,881 | 103 | ABBVIE INC. ($689.14) |
| 2021 | $1,807 | 111 | Takeda Pharmaceuticals U.S.A., Inc. ($363.87) |
| 2020 | $1,253 | 72 | AbbVie Inc. ($378.35) |
| 2019 | $1,512 | 78 | AbbVie, Inc. ($261.87) |
| 2018 | $2,164 | 95 | Takeda Pharmaceuticals U.S.A., Inc. ($517.19) |
| 2017 | $2,011 | 125 | Allergan Inc. ($328.22) |
All Payment Transactions
774 individual payment records from CMS Open Payments — Page 1 of 31
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 12/19/2024 | Celltrion USA Inc. | VEGZELMA (Biological) | Food and Beverage | In-kind items and services | $20.73 | General |
| Category: ONCOLOGY | ||||||
| 12/18/2024 | PFIZER INC. | XELJANZ (Drug), VELSIPITY | Food and Beverage | In-kind items and services | $26.53 | General |
| Category: GASTROINTESTINAL;INFLAMMATION;OPHTHALMOLOGY;TRANSPLANT | ||||||
| 12/12/2024 | Janssen Biotech, Inc. | TREMFYA (Drug) | Food and Beverage | In-kind items and services | $20.37 | General |
| Category: Immunology | ||||||
| 12/11/2024 | ABBVIE INC. | RINVOQ (Biological), SKYRIZI | Food and Beverage | In-kind items and services | $23.18 | General |
| Category: IMMUNOLOGY | ||||||
| 11/27/2024 | ABBVIE INC. | CREON (Drug), LINZESS | Food and Beverage | In-kind items and services | $21.68 | General |
| Category: ENDOCRINOLOGY | ||||||
| 11/18/2024 | Salix Pharmaceuticals, a division of Bausch Health US, LLC | TRULANCE (Drug) | Food and Beverage | In-kind items and services | $23.47 | General |
| Category: Gastroenterology | ||||||
| 11/18/2024 | Salix Pharmaceuticals, a division of Bausch Health US, LLC | TRULANCE (Drug) | Food and Beverage | In-kind items and services | $21.93 | General |
| Category: Gastroenterology | ||||||
| 11/18/2024 | Salix Pharmaceuticals, a division of Bausch Health US, LLC | TRULANCE (Drug) | Food and Beverage | In-kind items and services | $18.73 | General |
| Category: Gastroenterology | ||||||
| 11/12/2024 | Braintree Laboratories, Inc. | SUTAB (Drug), SUFLAVE | Food and Beverage | In-kind items and services | $15.17 | General |
| Category: GI COLON PREP | ||||||
| 11/05/2024 | Janssen Biotech, Inc. | TREMFYA (Drug) | Food and Beverage | In-kind items and services | $21.56 | General |
| Category: Immunology | ||||||
| 10/23/2024 | ABBVIE INC. | SKYRIZI (Biological), RINVOQ | Food and Beverage | In-kind items and services | $9.25 | General |
| Category: IMMUNOLOGY | ||||||
| 10/21/2024 | Janssen Biotech, Inc. | STELARA (Biological) | Food and Beverage | In-kind items and services | $9.00 | General |
| Category: Immunology | ||||||
| 10/19/2024 | ABBVIE INC. | SKYRIZI (Biological) | Food and Beverage | In-kind items and services | $27.62 | General |
| Category: IMMUNOLOGY | ||||||
| 09/26/2024 | Salix Pharmaceuticals, a division of Bausch Health US, LLC | XIFAXAN (Drug) | Food and Beverage | In-kind items and services | $16.42 | General |
| Category: Gastroenterology | ||||||
| 09/26/2024 | Salix Pharmaceuticals, a division of Bausch Health US, LLC | XIFAXAN (Drug) | Food and Beverage | In-kind items and services | $11.79 | General |
| Category: Gastroenterology | ||||||
| 09/26/2024 | Salix Pharmaceuticals, a division of Bausch Health US, LLC | XIFAXAN (Drug) | Food and Beverage | In-kind items and services | $2.60 | General |
| Category: Gastroenterology | ||||||
| 09/21/2024 | ABBVIE INC. | RINVOQ (Biological), SKYRIZI | Food and Beverage | In-kind items and services | $15.66 | General |
| Category: IMMUNOLOGY | ||||||
| 09/19/2024 | Braintree Laboratories, Inc. | SUFLAVE (Drug), SUTAB | Food and Beverage | In-kind items and services | $14.28 | General |
| Category: GI COLON PREP | ||||||
| 09/17/2024 | ABBVIE INC. | RINVOQ (Biological), SKYRIZI | Food and Beverage | In-kind items and services | $21.35 | General |
| Category: IMMUNOLOGY | ||||||
| 09/16/2024 | GENZYME CORPORATION | DUPIXENT (Biological) | Food and Beverage | In-kind items and services | $26.71 | General |
| Category: Immunology | ||||||
| 09/13/2024 | ABBVIE INC. | SKYRIZI (Biological) | Food and Beverage | In-kind items and services | $9.60 | General |
| Category: IMMUNOLOGY | ||||||
| 09/09/2024 | IRONWOOD PHARMACEUTICALS, INC | Linzess (Drug) | Food and Beverage | Cash or cash equivalent | $18.61 | General |
| Category: GI | ||||||
| 08/29/2024 | GENZYME CORPORATION | DUPIXENT (Biological) | Food and Beverage | In-kind items and services | $22.09 | General |
| Category: Immunology | ||||||
| 08/27/2024 | Gilead Sciences, Inc. | — | Food and Beverage | In-kind items and services | $32.88 | General |
| 08/23/2024 | ABBVIE INC. | SKYRIZI (Biological) | Food and Beverage | In-kind items and services | $30.45 | General |
| Category: IMMUNOLOGY | ||||||
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 18 | 902 | 1,703 | $560,264 | $109,392 |
| 2022 | 25 | 1,272 | 2,159 | $645,468 | $141,193 |
| 2021 | 24 | 1,571 | 2,248 | $919,104 | $216,888 |
| 2020 | 18 | 1,416 | 1,936 | $913,530 | $212,387 |
Total Patients
5,161
Total Services
8,046
Medicare Billing
$679,860
Procedure Codes
85
All Medicare Procedures & Services
85 procedure records from CMS Medicare Utilization — Page 1 of 4
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| 99439 | Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | Office | 2023 | 55 | 553 | $67,466 | $19,867 | 29.4% |
| 99490 | Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | Office | 2023 | 56 | 309 | $33,990 | $14,624 | 43.0% |
| G0121 | Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | Facility | 2023 | 76 | 76 | $75,696 | $13,630 | 18.0% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2023 | 117 | 138 | $38,502 | $11,219 | 29.1% |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Facility | 2023 | 40 | 40 | $55,120 | $8,198 | 14.9% |
| 45380 | Biopsy of large bowel using a flexible endoscope | Facility | 2023 | 67 | 67 | $81,874 | $6,798 | 8.3% |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | Office | 2023 | 66 | 66 | $28,182 | $6,745 | 23.9% |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | Office | 2023 | 85 | 85 | $23,885 | $5,819 | 24.4% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Office | 2023 | 77 | 84 | $15,792 | $5,141 | 32.6% |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Facility | 2023 | 51 | 53 | $56,763 | $3,677 | 6.5% |
| 99443 | Telephone medical discussion with physician, 21-30 minutes | Office | 2023 | 41 | 50 | $11,000 | $3,405 | 31.0% |
| 45378 | Diagnostic exam of large bowel using a flexible endoscope | Facility | 2023 | 20 | 20 | $20,520 | $2,600 | 12.7% |
| 43235 | Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Facility | 2023 | 26 | 28 | $23,464 | $2,032 | 8.7% |
| G0105 | Colorectal cancer screening; colonoscopy on individual at high risk | Facility | 2023 | 11 | 11 | $10,956 | $1,995 | 18.2% |
| 99202 | New patient office or other outpatient visit, 15-29 minutes | Office | 2023 | 42 | 42 | $8,148 | $1,584 | 19.4% |
| 99442 | Telephone medical discussion with physician, 11-20 minutes | Office | 2023 | 33 | 34 | $6,800 | $1,476 | 21.7% |
| 98966 | Telephone medical discussion provided by nonphysician professional, 5-10 minutes | Office | 2023 | 26 | 34 | $884.00 | $290.92 | 32.9% |
| 91200 | Measurement of liver stiffness | Office | 2023 | 13 | 13 | $1,222 | $290.76 | 23.8% |
| 99439 | Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | Office | 2022 | 149 | 711 | $76,820 | $26,841 | 34.9% |
| 99490 | Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | Office | 2022 | 156 | 395 | $43,450 | $19,541 | 45.0% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2022 | 121 | 140 | $39,060 | $12,777 | 32.7% |
| G0121 | Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | Facility | 2022 | 54 | 54 | $53,784 | $10,156 | 18.9% |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | Office | 2022 | 83 | 83 | $35,441 | $9,519 | 26.9% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Office | 2022 | 132 | 151 | $28,388 | $9,477 | 33.4% |
| 45380 | Biopsy of large bowel using a flexible endoscope | Facility | 2022 | 87 | 87 | $106,314 | $8,796 | 8.3% |
About Dr. Gary Chen, M.D
Dr. Gary Chen, M.D is a Gastroenterology healthcare provider based in Las Vegas, Nevada. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 05/03/2007. The National Provider Identifier (NPI) number assigned to this provider is 1720200132.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Dr. Gary Chen, M.D has received a total of $29,963 in payments from pharmaceutical and medical device companies, with $1,882 received in 2024. These payments were reported across 774 transactions from 45 companies. The most common payment nature is "Debt forgiveness" ($15,851).
As a Medicare-enrolled provider, Chen has provided services to 5,161 Medicare beneficiaries, totaling 8,046 services with total Medicare billing of $679,860. Data is available for 4 years (2020–2023), covering 85 distinct procedure/service records.
Ad
Practice Information
- Specialty Gastroenterology
- Other Specialties Gastroenterology
- Location Las Vegas, NV
- Active Since 05/03/2007
- Last Updated 02/21/2017
- Taxonomy Code 207RG0100X
- Entity Type Individual
- NPI Number 1720200132
Products in Payments
- Olympus (Device) $15,851
- RINVOQ (Biological) $942.20
- LINZESS (Drug) $704.41
- STELARA (Biological) $690.15
- Humira (Biological) $574.57
- HUMIRA (Biological) $525.03
- Linzess (Drug) $516.94
- Sucraid (Drug) $499.76
- Amitiza (Drug) $456.35
- TRULANCE (Drug) $436.54
- SKYRIZI (Biological) $425.83
- IBSRELA (Drug) $406.74
- DUPIXENT (Biological) $384.99
- XIFAXAN (Drug) $325.65
- XELJANZ (Drug) $324.07
- RELISTOR (Drug) $295.00
- ENTYVIO (Biological) $290.23
- LINX Reflux Management System (Device) $276.40
- MOTEGRITY (Drug) $267.31
- CREON (Drug) $267.25
Explore
Data Sources
Provider data from NPPES. Payment data from CMS Open Payments. Medicare data from CMS Medicare Provider Utilization. All data is public and updated periodically.
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