Total Payments
$5,942
2024 Payments
$117.45
Companies
11
Transactions
31
Medicare Patients
1,742
Medicare Billing
$167,383
Payment Breakdown by Category
Other$3,600 (60.6%)
Food & Beverage$2,247 (37.8%)
Education$95.00 (1.6%)
Payments by Nature
| Nature of Payment | Amount | Transactions | Share |
|---|---|---|---|
| Honoraria | $3,600 | 1 | 60.6% |
| Food and Beverage | $2,247 | 29 | 37.8% |
| Education | $95.00 | 1 | 1.6% |
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| PFIZER INC. | $3,618 | 2 | $0 (2020) |
| Janssen Scientific Affairs, LLC | $709.32 | 7 | $0 (2019) |
| ABBVIE INC. | $455.49 | 4 | $0 (2024) |
| Mallinckrodt LLC | $293.51 | 6 | $0 (2017) |
| Celgene Corporation | $210.24 | 4 | $0 (2019) |
| Genentech USA, Inc. | $157.92 | 2 | $0 (2017) |
| Olympus America Inc. | $133.18 | 2 | $0 (2018) |
| Allergan Inc. | $131.38 | 1 | $0 (2018) |
| UCB, Inc. | $120.54 | 1 | $0 (2017) |
| Janssen Biotech, Inc. | $95.00 | 1 | $0 (2017) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2024 | $117.45 | 1 | ABBVIE INC. ($117.45) |
| 2020 | $3,600 | 1 | PFIZER INC. ($3,600) |
| 2019 | $471.56 | 7 | Janssen Scientific Affairs, LLC ($382.32) |
| 2018 | $767.76 | 9 | AbbVie, Inc. ($338.04) |
| 2017 | $984.81 | 13 | Mallinckrodt LLC ($293.51) |
All Payment Transactions
31 individual payment records from CMS Open Payments — Page 1 of 2
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 09/26/2024 | ABBVIE INC. | SKYRIZI (Biological) | Food and Beverage | In-kind items and services | $117.45 | General |
| Category: IMMUNOLOGY | ||||||
| 09/11/2020 | PFIZER INC. | XELJANZ (Drug) | Honoraria | Cash or cash equivalent | $3,600.00 | General |
| Category: GASTROINTESTINAL;INFLAMMATION;OPHTHALMOLOGY;TRANSPLANT | ||||||
| 09/11/2019 | Takeda Pharmaceuticals U.S.A., Inc. | Entyvio (Biological) | Food and Beverage | In-kind items and services | $17.50 | General |
| Category: Lower GI | ||||||
| 09/10/2019 | PFIZER INC. | — | Food and Beverage | In-kind items and services | $17.50 | General |
| 06/18/2019 | Janssen Scientific Affairs, LLC | — | Food and Beverage | In-kind items and services | $70.16 | General |
| 04/12/2019 | Janssen Scientific Affairs, LLC | — | Food and Beverage | In-kind items and services | $64.86 | General |
| 02/28/2019 | Janssen Scientific Affairs, LLC | — | Food and Beverage | In-kind items and services | $123.90 | General |
| 02/12/2019 | Janssen Scientific Affairs, LLC | STELARA (Biological) | Food and Beverage | In-kind items and services | $123.40 | General |
| Category: Immunology | ||||||
| 01/22/2019 | Celgene Corporation | Ozanimod (Drug) | Food and Beverage | In-kind items and services | $54.24 | General |
| 10/26/2018 | Celgene Corporation | Ozanimod (Drug) | Food and Beverage | In-kind items and services | $24.77 | General |
| 06/03/2018 | Olympus America Inc. | Olympus EndoTherapy Accessories (Device) | Food and Beverage | In-kind items and services | $36.80 | General |
| Category: EndoTherapy Products | ||||||
| 06/02/2018 | AbbVie, Inc. | Humira (Biological) | Food and Beverage | In-kind items and services | $108.24 | General |
| Category: Immunology | ||||||
| 03/22/2018 | Janssen Scientific Affairs, LLC | STELARA (Biological), REMICADE | Food and Beverage | In-kind items and services | $105.54 | General |
| Category: Immunology | ||||||
| 03/14/2018 | Celgene Corporation | Ozanimod (Drug) | Food and Beverage | In-kind items and services | $42.13 | General |
| 03/13/2018 | Celgene Corporation | Ozanimod (Drug) | Food and Beverage | In-kind items and services | $89.10 | General |
| 02/27/2018 | AbbVie, Inc. | Humira (Biological) | Food and Beverage | In-kind items and services | $86.83 | General |
| Category: Immunology | ||||||
| 02/08/2018 | Allergan Inc. | VIBERZI (Drug) | Food and Beverage | In-kind items and services | $131.38 | General |
| Category: GASTROENTEROLOGY | ||||||
| 01/19/2018 | AbbVie, Inc. | Humira (Biological) | Food and Beverage | In-kind items and services | $142.97 | General |
| Category: Immunology | ||||||
| 12/19/2017 | Janssen Scientific Affairs, LLC | STELARA (Biological), REMICADE | Food and Beverage | In-kind items and services | $127.40 | General |
| Category: Immunology | ||||||
| 11/16/2017 | UCB, Inc. | — | Food and Beverage | In-kind items and services | $120.54 | General |
| 10/04/2017 | Janssen Biotech, Inc. | REMICADE (Biological) | Education | In-kind items and services | $95.00 | General |
| Category: Immunology | ||||||
| 06/15/2017 | Genentech USA, Inc. | TECENTRIQ (Biological) | Food and Beverage | In-kind items and services | $34.67 | General |
| Category: BioOncology | ||||||
| 06/03/2017 | Mallinckrodt LLC | OFIRMEV (Drug) | Food and Beverage | In-kind items and services | $33.17 | General |
| Category: ACUTE CARE | ||||||
| 05/10/2017 | Genentech USA, Inc. | TECENTRIQ (Biological) | Food and Beverage | In-kind items and services | $123.25 | General |
| Category: BioOncology | ||||||
| 05/04/2017 | Mallinckrodt LLC | OFIRMEV (Drug) | Food and Beverage | In-kind items and services | $33.75 | General |
| Category: ACUTE CARE | ||||||
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 6 | 357 | 367 | $388,880 | $36,901 |
| 2022 | 7 | 427 | 457 | $462,574 | $41,440 |
| 2021 | 8 | 469 | 500 | $471,275 | $46,297 |
| 2020 | 8 | 489 | 516 | $460,523 | $42,744 |
Total Patients
1,742
Total Services
1,840
Medicare Billing
$167,383
Procedure Codes
45
All Medicare Procedures & Services
45 procedure records from CMS Medicare Utilization — Page 1 of 2
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | Office | 2023 | 82 | 91 | $63,609 | $9,905 | 15.6% |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Office | 2023 | 44 | 44 | $90,379 | $9,798 | 10.8% |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | Office | 2023 | 43 | 43 | $36,636 | $5,940 | 16.2% |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Facility | 2023 | 20 | 20 | $40,960 | $3,878 | 9.5% |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Office | 2023 | 23 | 23 | $32,729 | $2,208 | 6.7% |
| 45380 | Biopsy of large bowel using a flexible endoscope | Facility | 2023 | 17 | 17 | $30,940 | $1,864 | 6.0% |
| 45380 | Biopsy of large bowel using a flexible endoscope | Office | 2023 | 30 | 30 | $54,843 | $1,840 | 3.4% |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Facility | 2023 | 14 | 14 | $19,922 | $985.82 | 4.9% |
| 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 | Office | 2023 | 62 | 63 | $13,978 | $381.28 | 2.7% |
| 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 | 22 | 22 | $4,884 | $100.71 | 2.1% |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | Office | 2022 | 82 | 106 | $72,088 | $10,768 | 14.9% |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Office | 2022 | 43 | 44 | $85,810 | $9,164 | 10.7% |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Facility | 2022 | 31 | 31 | $59,561 | $6,495 | 10.9% |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | Office | 2022 | 37 | 37 | $30,499 | $5,145 | 16.9% |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Facility | 2022 | 34 | 34 | $48,382 | $2,463 | 5.1% |
| 45380 | Biopsy of large bowel using a flexible endoscope | Facility | 2022 | 30 | 30 | $51,114 | $2,150 | 4.2% |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Office | 2022 | 23 | 24 | $34,152 | $1,818 | 5.3% |
| 43235 | Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Facility | 2022 | 17 | 17 | $18,392 | $1,568 | 8.5% |
| 45380 | Biopsy of large bowel using a flexible endoscope | Office | 2022 | 22 | 22 | $37,716 | $1,401 | 3.7% |
| 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 | Office | 2022 | 59 | 62 | $13,760 | $246.95 | 1.8% |
| 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 | 49 | 50 | $11,100 | $221.54 | 2.0% |
| 99215 | Established patient outpatient visit, total time 40-54 minutes | Office | 2021 | 102 | 124 | $71,335 | $13,383 | 18.8% |
| 45385 | Removal of polyps or growths in large bowel using an endoscope (colonoscopy) using a mechanical snare | Office | 2021 | 48 | 48 | $89,328 | $9,936 | 11.1% |
| 45385 | Removal of polyps or growths in large bowel using an endoscope (colonoscopy) using a mechanical snare | Facility | 2021 | 30 | 31 | $57,691 | $6,240 | 10.8% |
| 99205 | New patient outpatient visit, total time 60-74 minutes | Office | 2021 | 34 | 34 | $26,758 | $4,988 | 18.6% |
About Dr. Eric Mao, M.D
Dr. Eric Mao, M.D is a Gastroenterology healthcare provider based in Sacramento, California. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 05/20/2011. The National Provider Identifier (NPI) number assigned to this provider is 1043503295.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Dr. Eric Mao, M.D has received a total of $5,942 in payments from pharmaceutical and medical device companies, with $117.45 received in 2024. These payments were reported across 31 transactions from 11 companies. The most common payment nature is "Honoraria" ($3,600).
As a Medicare-enrolled provider, Mao has provided services to 1,742 Medicare beneficiaries, totaling 1,840 services with total Medicare billing of $167,383. Data is available for 4 years (2020–2023), covering 45 distinct procedure/service records.
Ad
Practice Information
- Specialty Gastroenterology
- Other Specialties Gastroenterology
- Location Sacramento, CA
- Active Since 05/20/2011
- Last Updated 01/31/2022
- Taxonomy Code 207RG0100X
- Entity Type Individual
- NPI Number 1043503295
Products in Payments
- XELJANZ (Drug) $3,600
- STELARA (Biological) $450.40
- Humira (Biological) $338.04
- OFIRMEV (Drug) $293.51
- Ozanimod (Drug) $210.24
- TECENTRIQ (Biological) $157.92
- VIBERZI (Drug) $131.38
- SKYRIZI (Biological) $117.45
- Olympus EMR & ESD Devices (Device) $96.38
- REMICADE (Biological) $95.00
- Olympus EndoTherapy Accessories (Device) $36.80
- Entyvio (Biological) $17.50
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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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