Total Payments
$2,440
2024 Payments
$227.33
Companies
13
Transactions
49
Medicare Patients
1,017
Medicare Billing
$74,775
Payment Breakdown by Category
Food & Beverage$2,339 (95.9%)
Other$100.67 (4.1%)
Payments by Nature
| Nature of Payment | Amount | Transactions | Share |
|---|---|---|---|
| Food and Beverage | $2,339 | 48 | 95.9% |
| Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | $100.67 | 1 | 4.1% |
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| Merck Sharp & Dohme LLC | $660.31 | 15 | $0 (2024) |
| Chiesi USA, Inc. | $405.24 | 10 | $0 (2024) |
| Pacira Pharmaceuticals Incorporated | $340.40 | 7 | $0 (2024) |
| Cumberland Pharmaceuticals, Inc. | $235.58 | 4 | $0 (2023) |
| EAGLE PHARMACEUTICALS, INC. | $219.39 | 5 | $0 (2023) |
| Boston Scientific Corporation | $145.27 | 1 | $0 (2023) |
| AcelRx Pharmaceuticals, Inc. | $124.29 | 1 | $0 (2020) |
| Mallinckrodt LLC | $122.29 | 1 | $0 (2018) |
| Grifols USA, LLC | $81.35 | 1 | $0 (2017) |
| Heron Therapeutics, Inc. | $56.18 | 1 | $0 (2023) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2024 | $227.33 | 9 | Chiesi USA, Inc. ($122.16) |
| 2023 | $670.00 | 17 | EAGLE PHARMACEUTICALS, INC. ($193.64) |
| 2022 | $194.35 | 5 | Chiesi USA, Inc. ($147.47) |
| 2021 | $156.46 | 4 | Chiesi USA, Inc. ($104.88) |
| 2020 | $384.32 | 4 | Pacira Pharmaceuticals Incorporated ($243.68) |
| 2019 | $301.62 | 4 | Merck Sharp & Dohme Corporation ($301.62) |
| 2018 | $424.53 | 5 | Merck Sharp & Dohme Corporation ($186.24) |
| 2017 | $81.35 | 1 | Grifols USA, LLC ($81.35) |
All Payment Transactions
49 individual payment records from CMS Open Payments — Page 1 of 2
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 12/13/2024 | Chiesi USA, Inc. | CLEVIPREX (Drug) | Food and Beverage | Cash or cash equivalent | $18.87 | General |
| Category: CARDIOVASCULAR | ||||||
| 12/10/2024 | Merck Sharp & Dohme LLC | BRIDION (Drug) | Food and Beverage | In-kind items and services | $24.76 | General |
| Category: NEUROSCIENCE | ||||||
| 10/16/2024 | Merck Sharp & Dohme LLC | BRIDION (Drug) | Food and Beverage | In-kind items and services | $23.43 | General |
| Category: NEUROSCIENCE | ||||||
| 10/15/2024 | Chiesi USA, Inc. | CLEVIPREX (Drug) | Food and Beverage | Cash or cash equivalent | $18.85 | General |
| Category: CARDIOVASCULAR | ||||||
| 10/03/2024 | VERTEX PHARMACEUTICALS INCORPORATED | — | Food and Beverage | In-kind items and services | $22.05 | General |
| 06/13/2024 | Chiesi USA, Inc. | CLEVIPREX (Drug) | Food and Beverage | Cash or cash equivalent | $66.81 | General |
| Category: CARDIOVASCULAR | ||||||
| 02/14/2024 | Pacira Pharmaceuticals Incorporated | Exparel (Drug) | Food and Beverage | In-kind items and services | $18.44 | General |
| Category: Pain Management | ||||||
| 01/25/2024 | Merck Sharp & Dohme LLC | BRIDION (Drug) | Food and Beverage | In-kind items and services | $16.49 | General |
| Category: NEUROSCIENCE | ||||||
| 01/19/2024 | Chiesi USA, Inc. | CLEVIPREX (Drug) | Food and Beverage | Cash or cash equivalent | $17.63 | General |
| Category: CARDIOVASCULAR | ||||||
| 12/19/2023 | EAGLE PHARMACEUTICALS, INC. | BARHEMSYS (Drug) | Food and Beverage | In-kind items and services | $16.69 | General |
| Category: Post Operative Nausea and Vomiting | ||||||
| 12/07/2023 | Boston Scientific Corporation | WATCHMAN Access System (Device) | Food and Beverage | In-kind items and services | $145.27 | General |
| Category: WATCHMAN_IC | ||||||
| 12/06/2023 | Pacira Pharmaceuticals Incorporated | Exparel (Drug) | Food and Beverage | In-kind items and services | $17.40 | General |
| Category: Pain Management | ||||||
| 11/15/2023 | Chiesi USA, Inc. | CLEVIPREX (Drug) | Food and Beverage | Cash or cash equivalent | $13.44 | General |
| Category: CARDIOVASCULAR | ||||||
| 11/06/2023 | Pacira Pharmaceuticals Incorporated | Exparel (Drug) | Food and Beverage | In-kind items and services | $15.84 | General |
| Category: Pain Management | ||||||
| 10/04/2023 | Heron Therapeutics, Inc. | APONVIE (Drug) | Food and Beverage | Cash or cash equivalent | $56.18 | General |
| Category: NAUSEAVOMITING | ||||||
| 09/12/2023 | Cumberland Pharmaceuticals, Inc. | CALDOLOR (Drug) | 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 | $100.67 | General |
| Category: ANESTHESIOLOGY PAIN MANAGEMENT | ||||||
| 09/11/2023 | EAGLE PHARMACEUTICALS, INC. | BYFAVO (Drug) | Food and Beverage | In-kind items and services | $54.56 | General |
| Category: Anesthesiology | ||||||
| 09/07/2023 | Pacira Pharmaceuticals Incorporated | Exparel (Drug) | Food and Beverage | In-kind items and services | $20.71 | General |
| Category: Pain Management | ||||||
| 09/05/2023 | Chiesi USA, Inc. | CLEVIPREX (Drug) | Food and Beverage | Cash or cash equivalent | $17.29 | General |
| Category: CARDIOVASCULAR | ||||||
| 08/24/2023 | Cumberland Pharmaceuticals, Inc. | CALDOLOR (Drug) | Food and Beverage | In-kind items and services | $16.54 | General |
| Category: ANESTHESIOLOGY PAIN MANAGEMENT | ||||||
| 08/09/2023 | EAGLE PHARMACEUTICALS, INC. | BARHEMSYS (Drug) | Food and Beverage | In-kind items and services | $19.99 | General |
| Category: Post Operative Nausea and Vomiting | ||||||
| 06/08/2023 | Pacira Pharmaceuticals Incorporated | Exparel (Drug) | Food and Beverage | In-kind items and services | $24.33 | General |
| Category: Pain Management | ||||||
| 04/26/2023 | Merck Sharp & Dohme LLC | BRIDION (Drug) | Food and Beverage | In-kind items and services | $15.73 | General |
| Category: NEUROSCIENCE | ||||||
| 03/14/2023 | EAGLE PHARMACEUTICALS, INC. | BARHEMSYS (Drug) | Food and Beverage | In-kind items and services | $102.40 | General |
| Category: Post Operative Nausea and Vomiting | ||||||
| 01/25/2023 | Merck Sharp & Dohme LLC | BRIDION (Drug) | Food and Beverage | In-kind items and services | $19.33 | General |
| Category: NEUROSCIENCE | ||||||
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 14 | 308 | 312 | $356,191 | $25,097 |
| 2022 | 16 | 289 | 292 | $324,068 | $22,975 |
| 2021 | 13 | 264 | 266 | $202,004 | $17,877 |
| 2020 | 7 | 156 | 156 | $95,167 | $8,826 |
Total Patients
1,017
Total Services
1,026
Medicare Billing
$74,775
Procedure Codes
50
All Medicare Procedures & Services
50 procedure records from CMS Medicare Utilization — Page 1 of 2
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| 00812 | Anesthesia for exam of colon using an endoscope | Facility | 2023 | 41 | 41 | $37,113 | $3,168 | 8.5% |
| 00537 | Anesthesia for procedure to assess heart electrical activity | Facility | 2023 | 16 | 16 | $45,073 | $3,026 | 6.7% |
| 00790 | Anesthesia for other procedure on upper abdomen | Facility | 2023 | 22 | 22 | $44,155 | $2,740 | 6.2% |
| 00731 | Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | Facility | 2023 | 34 | 35 | $34,113 | $2,397 | 7.0% |
| 00840 | Anesthesia for other procedure on lower abdomen | Facility | 2023 | 19 | 19 | $38,524 | $2,390 | 6.2% |
| 00914 | Anesthesia for removal of prostate including use of an endoscope | Facility | 2023 | 24 | 24 | $29,208 | $1,812 | 6.2% |
| 01402 | Anesthesia for procedure for total knee joint replacement | Facility | 2023 | 13 | 13 | $27,496 | $1,693 | 6.2% |
| 01922 | Anesthesia for x-ray or radiation therapy | Facility | 2023 | 21 | 21 | $26,030 | $1,632 | 6.3% |
| 00910 | Anesthesia for other procedure on urinary system through urethra | Facility | 2023 | 32 | 34 | $23,948 | $1,486 | 6.2% |
| 00918 | Anesthesia for fragmenting, manipulation and/or removal of kidney stone including use of an endoscope | Facility | 2023 | 16 | 16 | $18,111 | $1,124 | 6.2% |
| 36620 | Insertion of artery tube for blood sampling or infusion through skin | Facility | 2023 | 29 | 30 | $4,498 | $1,065 | 23.7% |
| 00813 | Anesthesia for procedure on small and large bowel using an endoscope | Facility | 2023 | 13 | 13 | $14,755 | $1,009 | 6.8% |
| 64447 | Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) | Facility | 2023 | 17 | 17 | $5,871 | $807.04 | 13.7% |
| 36556 | Insertion of non-tunneled central venous tube for infusion (5 years or older) | Facility | 2023 | 11 | 11 | $7,295 | $746.79 | 10.2% |
| 00537 | Anesthesia for procedure to assess heart electrical activity | Facility | 2022 | 23 | 23 | $56,385 | $4,372 | 7.8% |
| 01402 | Anesthesia for procedure for total knee joint replacement | Facility | 2022 | 20 | 20 | $48,130 | $2,859 | 5.9% |
| 00790 | Anesthesia for other procedure on upper abdomen | Facility | 2022 | 14 | 14 | $29,333 | $1,930 | 6.6% |
| 00731 | Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | Facility | 2022 | 27 | 29 | $23,945 | $1,705 | 7.1% |
| 00630 | Anesthesia for other procedure on lower spine | Facility | 2022 | 11 | 11 | $20,375 | $1,607 | 7.9% |
| 01922 | Anesthesia for x-ray or radiation therapy | Facility | 2022 | 14 | 15 | $21,150 | $1,368 | 6.5% |
| 00840 | Anesthesia for other procedure on lower abdomen | Facility | 2022 | 11 | 11 | $18,804 | $1,262 | 6.7% |
| 36620 | Insertion of artery tube for blood sampling or infusion through skin | Facility | 2022 | 33 | 33 | $10,091 | $1,210 | 12.0% |
| 00813 | Anesthesia for procedure on small and large bowel using an endoscope | Facility | 2022 | 20 | 20 | $18,364 | $1,138 | 6.2% |
| 00811 | Anesthesia for other procedure on large bowel using an endoscope | Facility | 2022 | 18 | 18 | $11,730 | $1,022 | 8.7% |
| 00914 | Anesthesia for removal of prostate including use of an endoscope | Facility | 2022 | 11 | 11 | $13,190 | $939.26 | 7.1% |
About Dr. Evangelos Tambassis, M.D
Dr. Evangelos Tambassis, M.D is a Anesthesiology healthcare provider based in Jefferson City, Missouri. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 09/20/2005. The National Provider Identifier (NPI) number assigned to this provider is 1679569198.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Dr. Evangelos Tambassis, M.D has received a total of $2,440 in payments from pharmaceutical and medical device companies, with $227.33 received in 2024. These payments were reported across 49 transactions from 13 companies. The most common payment nature is "Food and Beverage" ($2,339).
As a Medicare-enrolled provider, Tambassis has provided services to 1,017 Medicare beneficiaries, totaling 1,026 services with total Medicare billing of $74,775. Data is available for 4 years (2020–2023), covering 50 distinct procedure/service records.
Ad
Practice Information
- Specialty Anesthesiology
- Other Specialties Anesthesiology
- Location Jefferson City, MO
- Active Since 09/20/2005
- Last Updated 04/05/2022
- Taxonomy Code 207L00000X
- Entity Type Individual
- NPI Number 1679569198
Products in Payments
- BRIDION (Drug) $660.31
- CLEVIPREX (Drug) $405.24
- EXPAREL (Drug) $243.68
- BARHEMSYS (Drug) $164.83
- WATCHMAN Access System (Device) $145.27
- CALDOLOR (Drug) $130.84
- DSUVIA (Drug) $124.29
- OFIRMEV (Drug) $122.29
- Caldolor (Drug) $104.74
- Exparel (Drug) $96.72
- Thrombate III (Biological) $81.35
- APONVIE (Drug) $56.18
- BYFAVO (Drug) $54.56
- ON-Q PUMP AND ACCESSORIES (Device) $11.26
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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