Total Payments
$15,759
2024 Payments
$122.73
Companies
12
Transactions
28
Medicare Patients
256
Medicare Billing
$30,214
Payment Breakdown by Category
Other$8,495 (53.9%)
Consulting$3,125 (19.8%)
Travel$2,429 (15.4%)
Food & Beverage$1,708 (10.8%)
Education$2.14 (0.0%)
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 | $5,115 | 1 | 32.5% |
| Honoraria | $3,380 | 1 | 21.4% |
| Consulting Fee | $3,125 | 1 | 19.8% |
| Travel and Lodging | $2,429 | 7 | 15.4% |
| Food and Beverage | $1,708 | 17 | 10.8% |
| Education | $2.14 | 1 | 0.0% |
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| Daiichi Sankyo Inc. | $5,735 | 4 | $0 (2017) |
| Celgene Corporation | $4,567 | 6 | $0 (2017) |
| CSL Behring | $4,278 | 4 | $0 (2017) |
| Alexion Pharmaceuticals, Inc. | $491.16 | 5 | $0 (2019) |
| Genentech USA, Inc. | $168.17 | 2 | $0 (2019) |
| PORTOLA PHARMACEUTICALS, INC. | $124.91 | 1 | $0 (2019) |
| SOBI, INC | $122.73 | 1 | $0 (2024) |
| Rigel Pharmaceuticals, Inc. | $120.96 | 1 | $0 (2019) |
| Bioverativ Therapeutics Inc. | $52.55 | 1 | $0 (2017) |
| Novo Nordisk Health Care AG | $40.50 | 1 | $0 (2021) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2024 | $122.73 | 1 | SOBI, INC ($122.73) |
| 2023 | $21.55 | 1 | Novo Nordisk Inc ($21.55) |
| 2021 | $40.50 | 1 | Novo Nordisk Health Care AG ($40.50) |
| 2019 | $477.36 | 4 | PORTOLA PHARMACEUTICALS, INC. ($124.91) |
| 2018 | $58.52 | 1 | Genentech USA, Inc. ($58.52) |
| 2017 | $15,038 | 20 | Daiichi Sankyo Inc. ($5,735) |
All Payment Transactions
28 individual payment records from CMS Open Payments — Page 1 of 2
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 09/14/2024 | SOBI, INC | DOPTELET (Drug) | Food and Beverage | In-kind items and services | $122.73 | General |
| Category: HEMATOLOGY/ONCOLOGY | ||||||
| 06/15/2023 | Novo Nordisk Inc | Novoeight (Drug), Rebinyn, Tretten | Food and Beverage | In-kind items and services | $21.55 | General |
| Category: Hemophilia | ||||||
| 11/16/2021 | Novo Nordisk Health Care AG | — | Food and Beverage | In-kind items and services | $40.50 | General |
| 05/22/2019 | Alexion Pharmaceuticals, Inc. | — | Food and Beverage | In-kind items and services | $121.84 | General |
| 05/10/2019 | Genentech USA, Inc. | HEMLIBRA (Biological) | Food and Beverage | In-kind items and services | $109.65 | General |
| Category: Hematology | ||||||
| 05/02/2019 | PORTOLA PHARMACEUTICALS, INC. | ANDEXXA (Biological) | Food and Beverage | In-kind items and services | $124.91 | General |
| Category: HEMATOLOGY/NEUROLOGY | ||||||
| 03/14/2019 | Rigel Pharmaceuticals, Inc. | Tavalisse (Drug) | Food and Beverage | In-kind items and services | $120.96 | General |
| Category: Hematology | ||||||
| 11/28/2018 | Genentech USA, Inc. | — | Food and Beverage | In-kind items and services | $58.52 | General |
| 12/11/2017 | Bioverativ Therapeutics Inc. | — | Food and Beverage | In-kind items and services | $52.55 | General |
| 10/16/2017 | Celgene Corporation | Sotatercept (Drug) | Consulting Fee | Cash or cash equivalent | $3,125.00 | General |
| 10/12/2017 | Celgene Corporation | Sotatercept (Drug) | Travel and Lodging | In-kind items and services | $742.40 | General |
| 10/12/2017 | Celgene Corporation | Sotatercept (Drug) | Travel and Lodging | In-kind items and services | $251.58 | General |
| 10/12/2017 | Celgene Corporation | Sotatercept (Drug) | Travel and Lodging | In-kind items and services | $250.00 | General |
| 10/12/2017 | Celgene Corporation | Sotatercept (Drug) | Food and Beverage | In-kind items and services | $123.10 | General |
| 10/12/2017 | Celgene Corporation | Sotatercept (Drug) | Travel and Lodging | Cash or cash equivalent | $75.00 | General |
| 08/28/2017 | Alexion Pharmaceuticals, Inc. | SOLIRIS (Drug) | Food and Beverage | In-kind items and services | $123.60 | General |
| Category: Immunology | ||||||
| 05/06/2017 | CSL Behring | Afstyla (Biological) | Honoraria | Cash or cash equivalent | $3,380.00 | General |
| Category: Hemophilia | ||||||
| 05/05/2017 | CSL Behring | Afstyla (Biological) | Travel and Lodging | In-kind items and services | $564.72 | General |
| Category: Hemophilia | ||||||
| 05/05/2017 | CSL Behring | Afstyla (Biological) | Food and Beverage | In-kind items and services | $287.03 | General |
| Category: Hemophilia | ||||||
| 04/07/2017 | CSL Behring | Afstyla (Biological) | Food and Beverage | In-kind items and services | $45.87 | General |
| Category: Hemophilia | ||||||
| 04/07/2017 | PFIZER INC. | BENEFIX (Biological) | Food and Beverage | In-kind items and services | $35.98 | General |
| Category: HEMATOLOGY | ||||||
| 03/20/2017 | Daiichi Sankyo Inc. | INJECTAFER (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 | $5,115.00 | General |
| Category: Anemia | ||||||
| 03/07/2017 | Daiichi Sankyo Inc. | INJECTAFER (Drug) | Travel and Lodging | In-kind items and services | $356.25 | General |
| Category: Anemia | ||||||
| 03/07/2017 | Daiichi Sankyo Inc. | INJECTAFER (Drug) | Travel and Lodging | In-kind items and services | $188.91 | General |
| Category: Anemia | ||||||
| 03/07/2017 | Daiichi Sankyo Inc. | INJECTAFER (Drug) | Food and Beverage | In-kind items and services | $75.21 | General |
| Category: Anemia | ||||||
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 3 | 86 | 99 | $33,387 | $8,811 |
| 2022 | 3 | 79 | 102 | $39,728 | $9,783 |
| 2021 | 2 | 47 | 55 | $21,819 | $6,667 |
| 2020 | 2 | 44 | 53 | $20,002 | $4,953 |
Total Patients
256
Total Services
309
Medicare Billing
$30,214
Procedure Codes
10
All Medicare Procedures & Services
10 procedure records from CMS Medicare Utilization
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2023 | 43 | 55 | $20,295 | $5,517 | 27.2% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Office | 2023 | 25 | 26 | $6,630 | $1,757 | 26.5% |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | Office | 2023 | 18 | 18 | $6,462 | $1,538 | 23.8% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2022 | 47 | 67 | $24,723 | $6,353 | 25.7% |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | Office | 2022 | 20 | 20 | $11,180 | $2,544 | 22.8% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Office | 2022 | 12 | 15 | $3,825 | $885.46 | 23.1% |
| 99214 | Established patient outpatient visit, total time 30-39 minutes | Office | 2021 | 29 | 36 | $12,724 | $3,706 | 29.1% |
| 99215 | Established patient outpatient visit, total time 40-54 minutes | Office | 2021 | 18 | 19 | $9,095 | $2,961 | 32.6% |
| 99214 | Established patient office or other outpatient, visit typically 25 minutes | Office | 2020 | 27 | 33 | $11,022 | $2,663 | 24.2% |
| 99215 | Established patient office or other outpatient, visit typically 40 minutes | Office | 2020 | 17 | 20 | $8,980 | $2,290 | 25.5% |
About Dr. John Adamson, MD
Dr. John Adamson, MD is a Hematology healthcare provider based in San Diego, California. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 05/12/2006. The National Provider Identifier (NPI) number assigned to this provider is 1477504801.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Dr. John Adamson, MD has received a total of $15,759 in payments from pharmaceutical and medical device companies, with $122.73 received in 2024. These payments were reported across 28 transactions from 12 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" ($5,115).
As a Medicare-enrolled provider, Adamson has provided services to 256 Medicare beneficiaries, totaling 309 services with total Medicare billing of $30,214. Data is available for 4 years (2020–2023), covering 10 distinct procedure/service records.
Ad
Practice Information
- Specialty Hematology
- Location San Diego, CA
- Active Since 05/12/2006
- Last Updated 11/12/2025
- Taxonomy Code 207RH0000X
- Entity Type Individual
- NPI Number 1477504801
Products in Payments
- INJECTAFER (Drug) $5,735
- Sotatercept (Drug) $4,567
- Afstyla (Biological) $4,278
- SOLIRIS (Drug) $367.18
- ANDEXXA (Biological) $124.91
- DOPTELET (Drug) $122.73
- Tavalisse (Drug) $120.96
- HEMLIBRA (Biological) $109.65
- BENEFIX (Biological) $35.98
- Novoeight (Drug) $21.55
- Strensiq (Drug) $2.14
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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