Total Payments
$1,927
2024 Payments
$1,742
Companies
6
Transactions
7
Medicare Patients
2,525
Medicare Billing
$397,774
Payment Breakdown by Category
Consulting$1,650 (85.6%)
Food & Beverage$249.45 (12.9%)
Education$27.86 (1.4%)
Payments by Nature
| Nature of Payment | Amount | Transactions | Share |
|---|---|---|---|
| Consulting Fee | $1,650 | 1 | 85.6% |
| Food and Beverage | $249.45 | 4 | 12.9% |
| Education | $27.86 | 2 | 1.4% |
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| AstraZeneca Pharmaceuticals LP | $1,739 | 2 | $0 (2024) |
| GE HealthCare | $135.13 | 1 | $0 (2022) |
| Sysmex America, Inc. | $22.07 | 1 | $0 (2019) |
| E.R. Squibb & Sons, L.L.C. | $15.94 | 1 | $0 (2023) |
| Gilead Sciences, Inc. | $11.92 | 1 | $0 (2021) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2024 | $1,742 | 3 | AstraZeneca Pharmaceuticals LP ($1,739) |
| 2023 | $15.94 | 1 | E.R. Squibb & Sons, L.L.C. ($15.94) |
| 2022 | $135.13 | 1 | GE HealthCare ($135.13) |
| 2021 | $11.92 | 1 | Gilead Sciences, Inc. ($11.92) |
| 2019 | $22.07 | 1 | Sysmex America, Inc. ($22.07) |
All Payment Transactions
7 individual payment records from CMS Open Payments
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 11/15/2024 | AstraZeneca Pharmaceuticals LP | — | Consulting Fee | Cash or cash equivalent | $1,650.00 | General |
| 05/15/2024 | PFIZER INC. | IBRANCE (Drug), TUKYSA | Food and Beverage | In-kind items and services | $2.98 | General |
| Category: ONCOLOGY | ||||||
| 04/04/2024 | AstraZeneca Pharmaceuticals LP | — | Food and Beverage | In-kind items and services | $89.27 | General |
| 05/25/2023 | E.R. Squibb & Sons, L.L.C. | ABILIFY (Drug) | Education | In-kind items and services | $15.94 | General |
| Category: Neuroscience | ||||||
| 09/20/2022 | GE HealthCare | — | Food and Beverage | Cash or cash equivalent | $135.13 | General |
| 06/01/2021 | Gilead Sciences, Inc. | — | Education | In-kind items and services | $11.92 | General |
| 10/31/2019 | Sysmex America, Inc. | XN Series (Device) | Food and Beverage | Cash or cash equivalent | $22.07 | General |
| Category: Hematology | ||||||
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 8 | 605 | 969 | $244,482 | $115,588 |
| 2022 | 8 | 624 | 973 | $218,626 | $104,482 |
| 2021 | 9 | 609 | 924 | $199,314 | $98,625 |
| 2020 | 13 | 687 | 938 | $184,279 | $79,079 |
Total Patients
2,525
Total Services
3,804
Medicare Billing
$397,774
Procedure Codes
38
All Medicare Procedures & Services
38 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 | 232 | 502 | $137,856 | $68,758 | 49.9% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2023 | 166 | 191 | $37,828 | $18,291 | 48.4% |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | Office | 2023 | 82 | 82 | $31,970 | $14,080 | 44.0% |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Facility | 2023 | 48 | 103 | $15,583 | $6,707 | 43.0% |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Facility | 2023 | 30 | 32 | $12,956 | $4,560 | 35.2% |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Facility | 2023 | 14 | 14 | $3,809 | $1,538 | 40.4% |
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Facility | 2023 | 20 | 29 | $2,992 | $1,222 | 40.9% |
| G2212 | Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | Office | 2023 | 13 | 16 | $1,488 | $431.66 | 29.0% |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | Office | 2022 | 169 | 375 | $100,500 | $52,713 | 52.5% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2022 | 227 | 288 | $55,872 | $24,985 | 44.7% |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | Office | 2022 | 67 | 67 | $25,728 | $11,796 | 45.8% |
| 99232 | Follow-up hospital inpatient care per day, typically 25 minutes | Facility | 2022 | 51 | 101 | $14,645 | $6,156 | 42.0% |
| 99222 | Initial hospital inpatient care per day, typically 50 minutes | Facility | 2022 | 44 | 49 | $12,446 | $5,706 | 45.8% |
| 99231 | Follow-up hospital inpatient care per day, typically 15 minutes | Facility | 2022 | 21 | 44 | $4,488 | $1,392 | 31.0% |
| G2212 | Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | Office | 2022 | 32 | 36 | $3,348 | $956.01 | 28.6% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Office | 2022 | 13 | 13 | $1,599 | $779.52 | 48.8% |
| 99215 | Established patient outpatient visit, total time 40-54 minutes | Office | 2021 | 117 | 285 | $76,380 | $41,434 | 54.2% |
| 99214 | Established patient outpatient visit, total time 30-39 minutes | Office | 2021 | 249 | 312 | $60,528 | $29,540 | 48.8% |
| 99205 | New patient outpatient visit, total time 60-74 minutes | Office | 2021 | 53 | 53 | $20,352 | $9,875 | 48.5% |
| 99222 | Initial hospital inpatient care, typically 50 minutes per day | Facility | 2021 | 39 | 42 | $10,668 | $4,922 | 46.1% |
| 99232 | Subsequent hospital inpatient care, typically 25 minutes per day | Facility | 2021 | 38 | 80 | $11,600 | $4,821 | 41.6% |
| 99443 | Physician telephone patient service, 21-30 minutes of medical discussion | Office | 2021 | 16 | 25 | $6,250 | $2,834 | 45.3% |
| 99213 | Established patient outpatient visit, total time 20-29 minutes | Office | 2021 | 41 | 41 | $5,043 | $2,518 | 49.9% |
| 99231 | Subsequent hospital inpatient care, typically 15 minutes per day | Facility | 2021 | 29 | 55 | $5,610 | $1,796 | 32.0% |
| G2212 | Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | Office | 2021 | 27 | 31 | $2,883 | $884.73 | 30.7% |
About Dr. John Ayers, MD
Dr. John Ayers, MD is a Hematology & Oncology healthcare provider based in Warrenville, Illinois. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 09/30/2005. The National Provider Identifier (NPI) number assigned to this provider is 1477540821.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Dr. John Ayers, MD has received a total of $1,927 in payments from pharmaceutical and medical device companies, with $1,742 received in 2024. These payments were reported across 7 transactions from 6 companies. The most common payment nature is "Consulting Fee" ($1,650).
As a Medicare-enrolled provider, Ayers has provided services to 2,525 Medicare beneficiaries, totaling 3,804 services with total Medicare billing of $397,774. Data is available for 4 years (2020–2023), covering 38 distinct procedure/service records.
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Practice Information
- Specialty Hematology & Oncology
- Location Warrenville, IL
- Active Since 09/30/2005
- Last Updated 01/22/2013
- Taxonomy Code 207RH0003X
- Entity Type Individual
- NPI Number 1477540821
Products in Payments
- XN Series (Device) $22.07
- ABILIFY (Drug) $15.94
- IBRANCE (Drug) $2.98
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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.