Total Payments
$38,076
2024 Payments
$7,500
Companies
4
Transactions
37
Medicare Patients
695
Medicare Billing
$71,221
Payment Breakdown by Category
Consulting$32,829 (86.2%)
Other$2,720 (7.1%)
Travel$1,913 (5.0%)
Food & Beverage$614.79 (1.6%)
Payments by Nature
| Nature of Payment | Amount | Transactions | Share |
|---|---|---|---|
| Consulting Fee | $32,829 | 15 | 86.2% |
| Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | $2,720 | 1 | 7.1% |
| Travel and Lodging | $1,913 | 8 | 5.0% |
| Food and Beverage | $614.79 | 13 | 1.6% |
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| BioCryst Pharmaceuticals, Inc. | $20,550 | 6 | $0 (2024) |
| GlaxoSmithKline, LLC. | $14,356 | 29 | $0 (2021) |
| Merck KGaA | $2,720 | 1 | $0 (2021) |
| Perrigo Company plc | $450.00 | 1 | $0 (2019) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2024 | $7,500 | 1 | BioCryst Pharmaceuticals, Inc. ($7,500) |
| 2021 | $10,532 | 6 | BioCryst Pharmaceuticals, Inc. ($4,050) |
| 2020 | $2,661 | 2 | GlaxoSmithKline, LLC. ($2,661) |
| 2019 | $8,382 | 25 | GlaxoSmithKline, LLC. ($7,932) |
| 2018 | $4,050 | 1 | BioCryst Pharmaceuticals, Inc. ($4,050) |
| 2017 | $4,950 | 2 | BioCryst Pharmaceuticals, Inc. ($4,950) |
All Payment Transactions
37 individual payment records from CMS Open Payments — Page 1 of 2
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 08/28/2024 | BioCryst Pharmaceuticals, Inc. | — | Consulting Fee | Cash or cash equivalent | $7,500.00 | General |
| 11/02/2021 | GlaxoSmithKline, LLC. | — | Consulting Fee | Cash or cash equivalent | $744.69 | General |
| 10/18/2021 | BioCryst Pharmaceuticals, Inc. | Orladeyo (Drug) | Consulting Fee | Cash or cash equivalent | $2,925.00 | General |
| Category: Immunology | ||||||
| 10/18/2021 | BioCryst Pharmaceuticals, Inc. | — | Consulting Fee | Cash or cash equivalent | $1,125.00 | General |
| 07/07/2021 | GlaxoSmithKline, LLC. | — | Consulting Fee | Cash or cash equivalent | $1,563.57 | General |
| 06/19/2021 | Merck KGaA | Mavenclad (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 | $2,720.00 | General |
| Category: Neurology | ||||||
| 04/08/2021 | GlaxoSmithKline, LLC. | — | Consulting Fee | Cash or cash equivalent | $1,454.00 | General |
| 08/19/2020 | GlaxoSmithKline, LLC. | — | Consulting Fee | Cash or cash equivalent | $1,396.35 | General |
| 02/03/2020 | GlaxoSmithKline, LLC. | — | Consulting Fee | Cash or cash equivalent | $1,265.00 | General |
| 10/30/2019 | GlaxoSmithKline, LLC. | — | Travel and Lodging | In-kind items and services | $54.00 | General |
| 10/30/2019 | GlaxoSmithKline, LLC. | — | Travel and Lodging | In-kind items and services | $37.65 | General |
| 10/30/2019 | GlaxoSmithKline, LLC. | — | Food and Beverage | In-kind items and services | $16.90 | General |
| 10/29/2019 | GlaxoSmithKline, LLC. | — | Food and Beverage | In-kind items and services | $80.09 | General |
| 10/29/2019 | GlaxoSmithKline, LLC. | — | Food and Beverage | In-kind items and services | $78.78 | General |
| 10/29/2019 | GlaxoSmithKline, LLC. | — | Food and Beverage | In-kind items and services | $46.81 | General |
| 10/29/2019 | GlaxoSmithKline, LLC. | — | Food and Beverage | In-kind items and services | $27.13 | General |
| 10/29/2019 | GlaxoSmithKline, LLC. | — | Food and Beverage | In-kind items and services | $27.13 | General |
| 10/28/2019 | GlaxoSmithKline, LLC. | — | Food and Beverage | In-kind items and services | $97.22 | General |
| 10/28/2019 | GlaxoSmithKline, LLC. | — | Food and Beverage | In-kind items and services | $75.79 | General |
| 10/28/2019 | GlaxoSmithKline, LLC. | — | Food and Beverage | In-kind items and services | $46.81 | General |
| 10/28/2019 | GlaxoSmithKline, LLC. | — | Food and Beverage | In-kind items and services | $27.13 | General |
| 10/28/2019 | GlaxoSmithKline, LLC. | — | Food and Beverage | In-kind items and services | $20.35 | General |
| 10/28/2019 | GlaxoSmithKline, LLC. | — | Travel and Lodging | In-kind items and services | $3.53 | General |
| 10/28/2019 | GlaxoSmithKline, LLC. | — | Travel and Lodging | In-kind items and services | $3.33 | General |
| 10/27/2019 | GlaxoSmithKline, LLC. | — | Travel and Lodging | In-kind items and services | $960.33 | General |
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 4 | 83 | 114 | $32,268 | $8,063 |
| 2022 | 6 | 218 | 360 | $96,956 | $23,239 |
| 2021 | 5 | 195 | 316 | $82,581 | $21,299 |
| 2020 | 6 | 199 | 318 | $71,913 | $18,620 |
Total Patients
695
Total Services
1,108
Medicare Billing
$71,221
Procedure Codes
21
All Medicare Procedures & Services
21 procedure records from CMS Medicare Utilization
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Facility | 2023 | 29 | 55 | $12,650 | $3,292 | 26.0% |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Facility | 2023 | 19 | 19 | $8,075 | $1,868 | 23.1% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Facility | 2023 | 24 | 27 | $6,993 | $1,732 | 24.8% |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Facility | 2023 | 11 | 13 | $4,550 | $1,171 | 25.7% |
| 99232 | Follow-up hospital inpatient care per day, typically 25 minutes | Facility | 2022 | 74 | 191 | $43,930 | $10,181 | 23.2% |
| 99222 | Initial hospital inpatient care per day, typically 50 minutes | Facility | 2022 | 44 | 46 | $19,563 | $4,623 | 23.6% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Facility | 2022 | 53 | 64 | $15,640 | $4,342 | 27.8% |
| 99233 | Follow-up hospital inpatient care per day, typically 35 minutes | Facility | 2022 | 22 | 33 | $11,550 | $2,504 | 21.7% |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | Facility | 2022 | 12 | 12 | $4,047 | $1,181 | 29.2% |
| 99231 | Follow-up hospital inpatient care per day, typically 15 minutes | Facility | 2022 | 13 | 14 | $2,226 | $408.46 | 18.3% |
| 99232 | Subsequent hospital inpatient care, typically 25 minutes per day | Facility | 2021 | 64 | 160 | $36,428 | $8,942 | 24.5% |
| 99222 | Initial hospital inpatient care, typically 50 minutes per day | Facility | 2021 | 54 | 56 | $23,659 | $5,827 | 24.6% |
| 99214 | Established patient outpatient visit, total time 30-39 minutes | Facility | 2021 | 48 | 69 | $15,341 | $4,897 | 31.9% |
| 99233 | Subsequent hospital inpatient care, typically 35 minutes per day | Facility | 2021 | 13 | 14 | $4,450 | $1,125 | 25.3% |
| 99231 | Subsequent hospital inpatient care, typically 15 minutes per day | Facility | 2021 | 16 | 17 | $2,703 | $508.64 | 18.8% |
| 99232 | Subsequent hospital inpatient care, typically 25 minutes per day | Facility | 2020 | 63 | 155 | $34,335 | $8,316 | 24.2% |
| 99214 | Established patient office or other outpatient, visit typically 25 minutes | Facility | 2020 | 61 | 85 | $16,493 | $4,234 | 25.7% |
| 99222 | Initial hospital inpatient care, typically 50 minutes per day | Facility | 2020 | 31 | 32 | $13,232 | $3,409 | 25.8% |
| 99204 | New patient office or other outpatient visit, typically 45 minutes | Facility | 2020 | 11 | 11 | $3,468 | $1,096 | 31.6% |
| 99442 | Physician telephone patient service, 11-20 minutes of medical discussion | Facility | 2020 | 22 | 24 | $2,718 | $920.40 | 33.9% |
| 99443 | Physician telephone patient service, 21-30 minutes of medical discussion | Facility | 2020 | 11 | 11 | $1,667 | $643.42 | 38.6% |
About Dr. John Gnann, MD
Dr. John Gnann, MD is a Infectious Disease healthcare provider based in Charleston, South Carolina. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 06/22/2006. The National Provider Identifier (NPI) number assigned to this provider is 1467498659.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Dr. John Gnann, MD has received a total of $38,076 in payments from pharmaceutical and medical device companies, with $7,500 received in 2024. These payments were reported across 37 transactions from 4 companies. The most common payment nature is "Consulting Fee" ($32,829).
As a Medicare-enrolled provider, Gnann has provided services to 695 Medicare beneficiaries, totaling 1,108 services with total Medicare billing of $71,221. Data is available for 4 years (2020–2023), covering 21 distinct procedure/service records.
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Practice Information
- Specialty Infectious Disease
- Other Specialties Infectious Disease
- Location Charleston, SC
- Active Since 06/22/2006
- Last Updated 10/22/2020
- Taxonomy Code 207RI0200X
- Entity Type Individual
- NPI Number 1467498659
Products in Payments
- Peramivir (Drug) $4,950
- Orladeyo (Drug) $2,925
- Mavenclad (Drug) $2,720
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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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