Total Payments
$14,464
2023 Payments
$31.39
Companies
2
Transactions
28
Medicare Patients
800
Medicare Billing
$61,224
Payment Breakdown by Category
Other$11,550 (79.9%)
Travel$1,511 (10.4%)
Consulting$1,125 (7.8%)
Food & Beverage$278.11 (1.9%)
Payments by Nature
| Nature of Payment | Amount | Transactions | Share |
|---|---|---|---|
| Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | $11,550 | 4 | 79.9% |
| Travel and Lodging | $1,511 | 8 | 10.4% |
| Consulting Fee | $1,125 | 1 | 7.8% |
| Food and Beverage | $278.11 | 15 | 1.9% |
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| Boston Scientific Corporation | $14,432 | 27 | $0 (2019) |
| ERBE USA Inc | $31.39 | 1 | $0 (2023) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2023 | $31.39 | 1 | ERBE USA Inc ($31.39) |
| 2019 | $7,971 | 14 | Boston Scientific Corporation ($7,971) |
| 2018 | $6,461 | 13 | Boston Scientific Corporation ($6,461) |
All Payment Transactions
28 individual payment records from CMS Open Payments — Page 1 of 2
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 06/29/2023 | ERBE USA Inc | Erbe VIO3 (Device) | Food and Beverage | Cash or cash equivalent | $31.39 | General |
| Category: Gastroenterology | ||||||
| 11/26/2019 | Boston Scientific Corporation | ACQUIRE (Device) | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | Cash or cash equivalent | $2,250.00 | General |
| Category: BIOPSY | ||||||
| 11/26/2019 | Boston Scientific Corporation | ACQUIRE (Device) | Consulting Fee | Cash or cash equivalent | $1,125.00 | General |
| Category: BIOPSY | ||||||
| 10/25/2019 | Boston Scientific Corporation | ACQUIRE (Device) | Travel and Lodging | In-kind items and services | $93.32 | General |
| Category: BIOPSY | ||||||
| 07/12/2019 | Boston Scientific Corporation | RESOLUTION CLIP (Device) | Food and Beverage | In-kind items and services | $1.99 | General |
| Category: BILIARY DEVICES | ||||||
| 07/11/2019 | Boston Scientific Corporation | RESOLUTION CLIP (Device) | Food and Beverage | In-kind items and services | $1.78 | General |
| Category: BILIARY DEVICES | ||||||
| 07/08/2019 | Boston Scientific Corporation | GENERAL HEMOSTASIS (Device) | Food and Beverage | In-kind items and services | $2.04 | General |
| Category: HEMOSTASIS | ||||||
| 06/28/2019 | Boston Scientific Corporation | GENERAL HEMOSTASIS (Device) | Food and Beverage | In-kind items and services | $3.30 | General |
| Category: HEMOSTASIS | ||||||
| 05/22/2019 | Boston Scientific Corporation | ACQUIRE (Device) | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | Cash or cash equivalent | $3,750.00 | General |
| Category: BIOPSY | ||||||
| 05/22/2019 | Boston Scientific Corporation | ACQUIRE (Device) | Travel and Lodging | Cash or cash equivalent | $201.88 | General |
| Category: BIOPSY | ||||||
| 05/22/2019 | Boston Scientific Corporation | ACQUIRE (Device) | Travel and Lodging | Cash or cash equivalent | $153.48 | General |
| Category: BIOPSY | ||||||
| 05/22/2019 | Boston Scientific Corporation | ACQUIRE (Device) | Food and Beverage | Cash or cash equivalent | $57.41 | General |
| Category: BIOPSY | ||||||
| 04/27/2019 | Boston Scientific Corporation | GENERAL THERAPIES (Device) | Food and Beverage | In-kind items and services | $49.36 | General |
| Category: GENERAL THERAPIES | ||||||
| 04/27/2019 | Boston Scientific Corporation | GENERAL THERAPIES (Device) | Travel and Lodging | In-kind items and services | $39.50 | General |
| Category: GENERAL THERAPIES | ||||||
| 04/26/2019 | Boston Scientific Corporation | GENERAL THERAPIES (Device) | Travel and Lodging | In-kind items and services | $241.78 | General |
| Category: GENERAL THERAPIES | ||||||
| 12/19/2018 | Boston Scientific Corporation | SPYGLASS RETRIEVAL SNARE (Device) | Food and Beverage | In-kind items and services | $3.35 | General |
| Category: BILIARY DEVICES | ||||||
| 12/07/2018 | Boston Scientific Corporation | WALLFLEX (Device) | Food and Beverage | In-kind items and services | $3.39 | General |
| Category: STENTS | ||||||
| 11/28/2018 | Boston Scientific Corporation | ACQUIRE (Device) | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | Cash or cash equivalent | $3,600.00 | General |
| Category: BIOPSY | ||||||
| 11/28/2018 | Boston Scientific Corporation | ACQUIRE (Device) | Travel and Lodging | Cash or cash equivalent | $186.03 | General |
| Category: BIOPSY | ||||||
| 11/28/2018 | Boston Scientific Corporation | ACQUIRE (Device) | Travel and Lodging | Cash or cash equivalent | $77.43 | General |
| Category: BIOPSY | ||||||
| 11/28/2018 | Boston Scientific Corporation | ACQUIRE (Device) | Food and Beverage | Cash or cash equivalent | $62.15 | General |
| Category: BIOPSY | ||||||
| 11/02/2018 | Boston Scientific Corporation | THERAPIES (Device) | Food and Beverage | In-kind items and services | $38.40 | General |
| Category: GENERAL THERAPIES | ||||||
| 11/01/2018 | Boston Scientific Corporation | THERAPIES (Device) | Travel and Lodging | In-kind items and services | $517.15 | General |
| Category: GENERAL THERAPIES | ||||||
| 08/29/2018 | Boston Scientific Corporation | ACQUIRE (Device) | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | Cash or cash equivalent | $1,950.00 | General |
| Category: BIOPSY | ||||||
| 08/15/2018 | Boston Scientific Corporation | ACQUIRE (Device) | Food and Beverage | In-kind items and services | $15.50 | General |
| Category: BIOPSY | ||||||
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 9 | 227 | 234 | $212,235 | $18,235 |
| 2022 | 5 | 124 | 129 | $79,190 | $8,170 |
| 2021 | 8 | 227 | 237 | $178,909 | $18,070 |
| 2020 | 10 | 222 | 237 | $177,264 | $16,749 |
Total Patients
800
Total Services
837
Medicare Billing
$61,224
Procedure Codes
32
All Medicare Procedures & Services
32 procedure records from CMS Medicare Utilization — Page 1 of 2
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| 43242 | Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Facility | 2023 | 17 | 17 | $51,136 | $3,969 | 7.8% |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Facility | 2023 | 31 | 33 | $17,556 | $3,856 | 22.0% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Facility | 2023 | 28 | 29 | $20,322 | $2,134 | 10.5% |
| 45380 | Biopsy of large bowel using a flexible endoscope | Facility | 2023 | 13 | 13 | $29,835 | $2,106 | 7.1% |
| 45378 | Diagnostic exam of large bowel using a flexible endoscope | Facility | 2023 | 14 | 14 | $27,391 | $1,747 | 6.4% |
| 43235 | Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Facility | 2023 | 22 | 22 | $30,998 | $1,735 | 5.6% |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Facility | 2023 | 14 | 14 | $22,274 | $1,179 | 5.3% |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | Facility | 2023 | 11 | 11 | $7,326 | $1,153 | 15.7% |
| 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 | Facility | 2023 | 77 | 81 | $5,397 | $355.50 | 6.6% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Facility | 2022 | 26 | 27 | $18,638 | $2,592 | 13.9% |
| 99222 | Initial hospital inpatient care per day, typically 50 minutes | Facility | 2022 | 16 | 16 | $8,437 | $2,433 | 28.8% |
| 43235 | Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Facility | 2022 | 16 | 17 | $24,037 | $1,508 | 6.3% |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Facility | 2022 | 16 | 16 | $24,848 | $1,392 | 5.6% |
| 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 | Facility | 2022 | 50 | 53 | $3,230 | $244.20 | 7.6% |
| 99443 | Physician telephone patient service, 21-30 minutes of medical discussion | Facility | 2021 | 42 | 44 | $20,068 | $3,769 | 18.8% |
| 99222 | Initial hospital inpatient care, typically 50 minutes per day | Facility | 2021 | 20 | 22 | $10,944 | $3,351 | 30.6% |
| 43242 | Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using an endoscope | Facility | 2021 | 12 | 12 | $33,882 | $2,951 | 8.7% |
| 99214 | Established patient outpatient visit, total time 30-39 minutes | Facility | 2021 | 26 | 26 | $16,676 | $2,719 | 16.3% |
| 45380 | Biopsy of the large bowel using an endoscope (colonoscopy) | Facility | 2021 | 18 | 18 | $38,836 | $1,864 | 4.8% |
| 43235 | Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope | Facility | 2021 | 18 | 18 | $23,134 | $1,617 | 7.0% |
| 43239 | Biopsy of the esophagus, stomach, and/or upper small bowel using an endoscope | Facility | 2021 | 19 | 19 | $28,257 | $1,428 | 5.1% |
| 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 | Facility | 2021 | 72 | 78 | $7,112 | $370.88 | 5.2% |
| 99443 | Physician telephone patient service, 21-30 minutes of medical discussion | Facility | 2020 | 35 | 35 | $15,650 | $2,780 | 17.8% |
| 43237 | Ultrasound examination of esophagus, stomach, and/or upper small bowel using an endoscope | Facility | 2020 | 16 | 16 | $32,760 | $2,572 | 7.9% |
| 99222 | Initial hospital inpatient care, typically 50 minutes per day | Facility | 2020 | 16 | 17 | $8,210 | $2,493 | 30.4% |
About Dr. Ann Chen, MD
Dr. Ann Chen, MD is a Gastroenterology healthcare provider based in Stanford, California. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 07/10/2006. The National Provider Identifier (NPI) number assigned to this provider is 1003840307.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Dr. Ann Chen, MD has received a total of $14,464 in payments from pharmaceutical and medical device companies, with $31.39 received in 2023. These payments were reported across 28 transactions from 2 companies. The most common payment nature is "Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program" ($11,550).
As a Medicare-enrolled provider, Chen has provided services to 800 Medicare beneficiaries, totaling 837 services with total Medicare billing of $61,224. Data is available for 4 years (2020–2023), covering 32 distinct procedure/service records.
Ad
Practice Information
- Specialty Gastroenterology
- Location Stanford, CA
- Active Since 07/10/2006
- Last Updated 01/10/2009
- Taxonomy Code 207RG0100X
- Entity Type Individual
- NPI Number 1003840307
Products in Payments
- ACQUIRE (Device) $13,530
- THERAPIES (Device) $555.55
- GENERAL THERAPIES (Device) $330.64
- Erbe VIO3 (Device) $31.39
- GENERAL HEMOSTASIS (Device) $5.34
- RESOLUTION CLIP (Device) $3.77
- WALLFLEX (Device) $3.39
- SPYGLASS RETRIEVAL SNARE (Device) $3.35
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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