Total Payments
$9,274
2024 Payments
$612.48
Companies
33
Transactions
266
Medicare Patients
2,139
Medicare Billing
$263,244
Payment Breakdown by Category
Food & Beverage$6,064 (65.4%)
Other$2,781 (30.0%)
Travel$410.02 (4.4%)
Education$13.14 (0.1%)
Gifts$5.98 (0.1%)
Payments by Nature
| Nature of Payment | Amount | Transactions | Share |
|---|---|---|---|
| Food and Beverage | $6,064 | 252 | 65.4% |
| Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | $2,700 | 3 | 29.1% |
| Travel and Lodging | $410.02 | 4 | 4.4% |
| Entertainment | $81.25 | 1 | 0.9% |
| Education | $13.14 | 4 | 0.1% |
| Gift | $5.98 | 2 | 0.1% |
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| Allergan Inc. | $3,896 | 37 | $0 (2019) |
| ABBVIE INC. | $2,023 | 87 | $0 (2024) |
| Romark Laboratories, LC | $753.45 | 26 | $0 (2020) |
| Smith & Nephew, Inc. | $460.77 | 11 | $0 (2018) |
| Gilead Sciences, Inc. | $323.62 | 16 | $0 (2024) |
| Janssen Biotech, Inc. | $303.74 | 14 | $0 (2024) |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | $202.91 | 11 | $0 (2024) |
| Ethicon US, LLC | $138.78 | 3 | $0 (2018) |
| Ardelyx, Inc. | $134.91 | 8 | $0 (2024) |
| Synergy Pharmaceuticals Inc | $116.48 | 5 | $0 (2018) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2024 | $612.48 | 22 | ABBVIE INC. ($232.20) |
| 2023 | $356.66 | 18 | AbbVie Inc. ($100.73) |
| 2022 | $292.03 | 16 | ABBVIE INC. ($118.60) |
| 2021 | $352.62 | 16 | AbbVie Inc. ($292.94) |
| 2020 | $193.77 | 11 | AbbVie Inc. ($155.64) |
| 2019 | $664.38 | 33 | AbbVie, Inc. ($284.54) |
| 2018 | $1,995 | 72 | AbbVie, Inc. ($575.73) |
| 2017 | $4,807 | 78 | Allergan Inc. ($3,740) |
All Payment Transactions
266 individual payment records from CMS Open Payments — Page 1 of 11
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 12/06/2024 | Phathom Pharmaceuticals, Inc. | VOQUEZNA (Drug) | Food and Beverage | In-kind items and services | $25.75 | General |
| Category: GASTROENTEROLOGY | ||||||
| 12/03/2024 | ABBVIE INC. | SKYRIZI (Biological) | Food and Beverage | In-kind items and services | $121.13 | General |
| Category: IMMUNOLOGY | ||||||
| 11/13/2024 | Salix Pharmaceuticals, a division of Bausch Health US, LLC | TRULANCE (Drug) | Food and Beverage | In-kind items and services | $14.64 | General |
| Category: Gastroenterology | ||||||
| 11/04/2024 | Janssen Biotech, Inc. | TREMFYA (Drug) | Food and Beverage | In-kind items and services | $41.52 | General |
| Category: Immunology | ||||||
| 10/19/2024 | ABBVIE INC. | LINZESS (Drug), CREON | Food and Beverage | In-kind items and services | $13.33 | General |
| Category: GASTROENTEROLOGY | ||||||
| 10/14/2024 | Ardelyx, Inc. | IBSRELA (Drug) | Food and Beverage | In-kind items and services | $19.93 | General |
| Category: GASTROENTEROLOGY | ||||||
| 09/09/2024 | Gilead Sciences, Inc. | — | Food and Beverage | In-kind items and services | $22.88 | General |
| 08/26/2024 | ABBVIE INC. | RINVOQ (Biological), SKYRIZI | Food and Beverage | In-kind items and services | $26.72 | General |
| Category: IMMUNOLOGY | ||||||
| 07/30/2024 | Celgene Corporation | ZEPOSIA (Drug) | Food and Beverage | Cash or cash equivalent | $23.51 | General |
| Category: Neuroscience | ||||||
| 07/22/2024 | Janssen Biotech, Inc. | TREMFYA (Drug), SIMPONI, SIMPONI ARIA | Food and Beverage | In-kind items and services | $35.94 | General |
| Category: Immunology | ||||||
| 07/15/2024 | Regeneron Healthcare Solutions, Inc. | DUPIXENT (Biological) | Food and Beverage | In-kind items and services | $32.09 | General |
| Category: INFLAMMATION AND IMMUNOLOGY | ||||||
| 07/12/2024 | ABBVIE INC. | RINVOQ (Biological) | Food and Beverage | In-kind items and services | $24.99 | General |
| Category: IMMUNOLOGY | ||||||
| 06/28/2024 | Ardelyx, Inc. | IBSRELA (Drug) | Food and Beverage | In-kind items and services | $18.32 | General |
| Category: GASTROENTEROLOGY | ||||||
| 05/14/2024 | Phathom Pharmaceuticals, Inc. | VOQUEZNA (Drug) | Food and Beverage | In-kind items and services | $28.46 | General |
| Category: GASTROENTEROLOGY | ||||||
| 04/29/2024 | ABBVIE INC. | SKYRIZI (Biological) | Food and Beverage | In-kind items and services | $25.99 | General |
| Category: IMMUNOLOGY | ||||||
| 04/24/2024 | Salix Pharmaceuticals, a division of Bausch Health US, LLC | XIFAXAN (Drug) | Food and Beverage | In-kind items and services | $29.43 | General |
| Category: Gastroenterology | ||||||
| 04/18/2024 | ABBVIE INC. | RINVOQ (Biological), SKYRIZI | Food and Beverage | In-kind items and services | $20.04 | General |
| Category: IMMUNOLOGY | ||||||
| 04/12/2024 | Ardelyx, Inc. | IBSRELA (Drug) | Food and Beverage | In-kind items and services | $16.24 | General |
| Category: GASTROENTEROLOGY | ||||||
| 03/11/2024 | Ardelyx, Inc. | IBSRELA (Drug) | Food and Beverage | In-kind items and services | $16.31 | General |
| Category: GASTROENTEROLOGY | ||||||
| 03/05/2024 | Medtronic, Inc. | GI GENIUS (Device) | Food and Beverage | In-kind items and services | $23.28 | General |
| Category: Gastrointestinal AI | ||||||
| 02/10/2024 | RedHill Biopharma Inc. | Talicia (Drug), Aemcolo | Food and Beverage | Cash or cash equivalent | $16.97 | General |
| Category: Antibiotic | ||||||
| 01/08/2024 | Ardelyx, Inc. | IBSRELA (Drug) | Food and Beverage | In-kind items and services | $15.01 | General |
| Category: GASTROENTEROLOGY | ||||||
| 11/29/2023 | Lucid Diagnostics Inc. | — | Food and Beverage | In-kind items and services | $16.07 | General |
| 11/07/2023 | Gilead Sciences, Inc. | — | Food and Beverage | In-kind items and services | $13.39 | General |
| 10/23/2023 | AbbVie Inc. | RINVOQ (Biological), SKYRIZI | Food and Beverage | In-kind items and services | $21.52 | General |
| Category: IMMUNOLOGY | ||||||
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 9 | 510 | 638 | $207,403 | $61,477 |
| 2022 | 13 | 598 | 972 | $246,567 | $81,571 |
| 2021 | 14 | 641 | 937 | $243,441 | $75,796 |
| 2020 | 7 | 390 | 490 | $146,675 | $44,399 |
Total Patients
2,139
Total Services
3,037
Medicare Billing
$263,244
Procedure Codes
43
All Medicare Procedures & Services
43 procedure records from CMS Medicare Utilization — Page 1 of 2
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2023 | 149 | 272 | $58,752 | $23,617 | 40.2% |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | Office | 2023 | 84 | 84 | $27,888 | $9,496 | 34.0% |
| 45380 | Biopsy of large bowel using a flexible endoscope | Facility | 2023 | 66 | 66 | $43,560 | $8,784 | 20.2% |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Facility | 2023 | 56 | 56 | $25,704 | $4,363 | 17.0% |
| G0105 | Colorectal cancer screening; colonoscopy on individual at high risk | Facility | 2023 | 21 | 21 | $12,789 | $3,839 | 30.0% |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Facility | 2023 | 20 | 20 | $16,680 | $3,570 | 21.4% |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | Office | 2023 | 44 | 44 | $8,800 | $2,843 | 32.3% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Office | 2023 | 42 | 45 | $6,750 | $2,652 | 39.3% |
| 76981 | Ultrasound scan of organ tissue for measuring elasticity | Office | 2023 | 28 | 30 | $6,480 | $2,314 | 35.7% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2022 | 152 | 271 | $58,536 | $24,903 | 42.5% |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | Office | 2022 | 87 | 87 | $28,767 | $10,471 | 36.4% |
| 45380 | Biopsy of large bowel using a flexible endoscope | Facility | 2022 | 72 | 75 | $49,500 | $9,696 | 19.6% |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Facility | 2022 | 29 | 29 | $24,186 | $5,824 | 24.1% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Office | 2022 | 73 | 83 | $12,450 | $5,369 | 43.1% |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Facility | 2022 | 57 | 61 | $27,999 | $4,575 | 16.3% |
| 99490 | Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | Office | 2022 | 20 | 94 | $7,990 | $4,381 | 54.8% |
| 99487 | Complex chronic care management services for two or more chronic conditions, first 60 minutes of clinical staff time directed by health care professional, per calendar month | Office | 2022 | 12 | 42 | $7,602 | $4,165 | 54.8% |
| 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 | 17 | 98 | $6,860 | $3,635 | 53.0% |
| 99489 | Complex chronic care management services for two or more chronic conditions, each additional 60 minutes of clinical staff time directed by health care professional, per calendar month | Office | 2022 | 12 | 65 | $5,720 | $3,466 | 60.6% |
| G0105 | Colorectal cancer screening; colonoscopy on individual at high risk | Facility | 2022 | 13 | 13 | $7,917 | $2,432 | 30.7% |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | Office | 2022 | 32 | 32 | $6,400 | $2,202 | 34.4% |
| 91200 | Measurement of liver stiffness | Office | 2022 | 22 | 22 | $2,640 | $454.67 | 17.2% |
| 99214 | Established patient outpatient visit, total time 30-39 minutes | Office | 2021 | 152 | 272 | $58,681 | $26,099 | 44.5% |
| 45380 | Biopsy of the large bowel using an endoscope (colonoscopy) | Facility | 2021 | 81 | 81 | $53,460 | $10,773 | 20.2% |
| 99204 | New patient outpatient visit, total time 45-59 minutes | Office | 2021 | 84 | 84 | $27,771 | $9,283 | 33.4% |
About John Chang, M.D.,FACP,FACG
John Chang, M.D.,FACP,FACG is a Gastroenterology healthcare provider based in Tampa, Florida. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 08/04/2006. The National Provider Identifier (NPI) number assigned to this provider is 1780692517.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, John Chang, M.D.,FACP,FACG has received a total of $9,274 in payments from pharmaceutical and medical device companies, with $612.48 received in 2024. These payments were reported across 266 transactions from 33 companies. The most common payment nature is "Food and Beverage" ($6,064).
As a Medicare-enrolled provider, Chang has provided services to 2,139 Medicare beneficiaries, totaling 3,037 services with total Medicare billing of $263,244. Data is available for 4 years (2020–2023), covering 43 distinct procedure/service records.
Ad
Practice Information
- Specialty Gastroenterology
- Location Tampa, FL
- Active Since 08/04/2006
- Last Updated 09/28/2021
- Taxonomy Code 207RG0100X
- Entity Type Individual
- Practice Solo Practitioner
- NPI Number 1780692517
Products in Payments
- VIBERZI (Drug) $2,497
- LINZESS (Drug) $1,482
- Alinia Tablets 500mg 30 count bottle (Drug) $648.85
- Mavyret (Drug) $572.66
- MAVYRET (Drug) $391.58
- PICO (Device) $218.05
- Humira (Biological) $183.50
- RINVOQ (Biological) $160.12
- STELARA (Biological) $153.05
- SKYRIZI (Biological) $147.12
- LINX Reflux Management System (Device) $138.78
- IBSRELA (Drug) $134.91
- XIFAXAN (Drug) $121.11
- Trulance (Drug) $116.48
- Cimzia (Drug) $116.08
- Navio Surgical System (Device) $102.95
- Supera peripheral stent system (Device) $79.44
- APRISO (Drug) $78.27
- TREMFYA (Drug) $77.46
- HUMIRA (Biological) $76.43
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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