FDG PET to Assess Therapeutic Response in Patients With Bone-Dominant Metastatic Breast Cancer, FEATURE (opens in a new tab)
Active, not recruitingPhase 2
Breast NeoplasmsBreast Diseases
Dr. John D. Ayers, MD
NPI1477540821PAC ID7214018324
- Medicare services, 2024
- 1,303
- Medicare patients, 2024
- 489
- Part D claims, 2024
- 1,007
- Clinical trials
- 10
- MIPS score, 2024
- 96
- Practice address
- 25 North Winfield Road, Winfield, IL 60190
- Practice phone
- Call (630) 682-1600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Ayers' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John D. Ayers is a hematologist and oncologist in Winfield, Illinois
Dr. Ayers practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare.
Dr. Ayers' NPI, 1477540821, was assigned on September 30, 2005. Dr. Ayers graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1995. Dr. Ayers holds Illinois license 036102368.
NPI and contact details
- NPI
- 1477540821NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7214018324
- NPI enumeration date
- September 30, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (630) 682-1600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John D. Ayers practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois
Dr. Ayers' primary practice is Northwestern Medicine Central DuPage Hospital, at 25 North Winfield Road, Winfield, IL 60190 in Du Page County. The practice phone is (630) 682-1600.
- Northwestern Medicine Central DuPage Hospital25 North Winfield Road, Winfield, IL 60190 · Du Page CountyPhone(630) 682-1600
Source: Dmand AI Affiliation Data
Dr. John D. Ayers is affiliated with 9 sites of care and 2 medical groups
Dr. Ayers' primary practice is Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare. Dr. Ayers is also affiliated with Northwestern Memorial Hospital. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Dr. Ayers to 3 more hospitals, 2 group practices and clinics, 1 breast imaging center, 1 clinical lab and 1 medical group, each named with a free account.
Northwestern Memorial HospitalNorthwestern Medical Faculty Foundation3 hospitalsNames with a free account2 group practices and clinicsNames with a free account1 breast imaging centerName with a free account1 clinical labName with a free account1 medical groupName with a free account
See all 11 affiliations for Dr. AyersSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John D. Ayers' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ayers practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Medicine Central DuPage Hospital | Available with a free account |
| +8 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. John D. Ayers is one of 563 hematologists and oncologists in Illinois
Hematology and oncology is Dr. Ayers' primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Ayers is licensed in Illinois.
Specialties and state licenses
- Hematology and oncology, IllinoisPrimary
Hematologists and oncologists near Dr. Ayers
Counts of hematologists and oncologists with a Dmand AI profile, by place and practice. Each opens the list.
563hematologists and oncologists in Illinois17hematologists and oncologists in Winfield16hematologists and oncologists at Northwestern Medicine Central DuPage Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John D. Ayers billed Medicare for 1,303 services in 2024
CMS data shows 1,303 Medicare services from Dr. Ayers across 9 procedure codes in 2024, for 489 Medicare patients. Medicare paid $134,688 for them.
Medicare services, 20241,303
Medicare patients489
Paid by Medicare$134,688
Procedure codes9
Dr. Ayers' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9532024: 953No change
- Other services
- 2023: 162024: 3502088%
Where Dr. Ayers' Medicare services took place, 2024
- In an office1,21693%
- In a facility877%
Dr. Ayers compared with the Illinois median for hematologists and oncologists, 2024
- Dr. Ayers
- Illinois median
- Medicare services
- 1,303vs 1,05623% above
- Medicare patients
- 489vs 28273% above
- Part D claims
- 912vs 3282.8 times
Medians across 547 hematologists and oncologists in Illinois with Dmand AI profiles that report each measure.
Dr. Ayers' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Ayers?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ayers and other hematologists and oncologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John D. Ayers treated 489 Medicare patients in 2024, average age 75
CMS counts 489 Medicare patients who saw Dr. Ayers in 2024. The largest group is 65 to 74, with 223 patients. 75% of them have high cholesterol, and 71% have high blood pressure. 6% are also on Medicaid. Their average risk score is 1.51, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Ayers' median patient age at 72, with 76% women.
Medicare patients, 2024489
Average age75
Average risk score1.51
Also on Medicaid6%
Dr. Ayers' Medicare patients by age, 2024
Dr. Ayers' Medicare patients by sex, 2024
- Women37176%
- Men11824%
Chronic conditions among Dr. Ayers' Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
- Cancer63%
- Arthritis45%
- Anxiety24%
- Diabetes24%
- Ischemic heart disease24%
- Mood disorders23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ayers' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women76%
- Men23%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John D. Ayers wrote 1,007 Medicare Part D claims in 2024
In 2024, Dr. Ayers wrote 1,007 Medicare Part D claims for 304 patients. 84% of them were for generic drugs. CMS names the drug for 912 of them, across 16 drugs with 11 or more claims each, at $529,597 in total drug cost. In 2023, CMS named 771 claims across 13 drugs.
Part D claims, 20241,007
Drugs named by CMS16
Total drug cost$529,597
Part D patients304
Dr. Ayers' Part D claims by kind of drug, 2024
- Generic842 claims84%
- Brand-name165 claims16%
Dr. Ayers' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Ayers' Part D claims, 2024
- Opioids2%18 of 1,007 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7712024: 91218%
Drugs named by CMS: 16 in 2024, 13 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. John D. Ayers scored 96 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Dr. Ayers for performance year 2024, reported through an alternative payment model (APM). Dr. Ayers accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ayers as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Ayers' MIPS scores, performance year 2024
- 96of 100Final score
- 88.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. John D. Ayers has worked on 10 clinical trials
Dmand AI links Dr. Ayers to 10 clinical trials, 7 of them phase 3 studies. 7 are still active or recruiting. Conditions studied include Breast Neoplasms, Breast Diseases and Breast Carcinoma In Situ. Alliance for Clinical Trials in Oncology sponsors the most, 4.
Clinical trials with Dr. Ayers by phase
- NonePhase 1: no trials
- 1Phase 2: 1 trial
- 7Phase 3: 7 trials
- NonePhase 4: no trials
Conditions in Dr. Ayers' trials
- Breast Neoplasms
- Breast Diseases
- Breast Carcinoma In Situ
- Breast Neoplasms, Male
- Carcinoma, Intraductal, Noninfiltrating
Investigators on the most trials with Dr. Ayers
- William Jude Charles, MD4 shared trials
- Susannah Catherine Cooper, MD4 shared trials
- Rima Jean Couzi, MD4 shared trials
Recent clinical trials with Dr. Ayers
Carcinoma, Intraductal, NoninfiltratingBreast Carcinoma In Situ7-gene biosignature
Testing MK-3475 (Pembrolizumab) as Adjuvant Therapy for Triple Receptor-Negative Breast Cancer (opens in a new tab)
Active, not recruitingPhase 3
Breast Carcinoma In SituCarcinoma in SituPembrolizumabRadiation Therapy
Breast Cancer WEight Loss Study (BWEL Study) (opens in a new tab)
Active, not recruitingPhase 3
Breast NeoplasmsBreast Diseases
Sources: ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. John D. Ayers received $1,996 in industry payments from 2019 to 2025
CMS Open Payments shows 8 general payments to Dr. Ayers from 6 drug and device companies from 2019 to 2025. Consulting fees make up the largest share, 83% of the total. AstraZeneca Pharmaceuticals LP paid the most, $1,808.
General payments to Dr. Ayers by program year, 2019 to 2025
General payments to Dr. Ayers by kind, 2019 to 2025
$2Kin total
- Consulting fees$1,65083%
- Food and beverage$24912%
- Education$965%
Companies that paid Dr. Ayers the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John D. Ayers graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Dr. Ayers graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John D. Ayers's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Clinical trials and co-investigators | ClinicalTrials.gov (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John D. Ayers
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John D. Ayers' NPI number?
Dr. John D. Ayers' NPI number is 1477540821. It was assigned on September 30, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John D. Ayers?
Dr. John D. Ayers is a hematologist and oncologist in Winfield, Illinois. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. John D. Ayers practice?
Dr. Ayers practices at 25 North Winfield Road, Winfield, IL 60190. Dr. Ayers' primary practice is Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Dr. Ayers to 3 hospitals, 2 group practices and clinics, 1 breast imaging center, 1 clinical lab and 1 medical group.
What is Dr. John D. Ayers' office phone number?
The practice phone on file for Dr. Ayers is (630) 682-1600.
What is Dr. John D. Ayers' medical license number?
Dr. Ayers holds Illinois license 036102368.
Which hospitals is Dr. John D. Ayers affiliated with?
Dr. Ayers practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois. Dr. Ayers is also affiliated with Northwestern Memorial Hospital. Dmand AI links Dr. Ayers to 3 more hospitals.
What medical group is Dr. John D. Ayers part of?
Dr. Ayers is linked to Northwestern Medical Faculty Foundation. Dmand AI links Dr. Ayers to 1 more medical group.
Does Dr. John D. Ayers accept Medicare?
Yes. CMS data shows Dr. Ayers billed Medicare for 1,303 services in 2024, and Dr. Ayers accepts Medicare assignment.
Does Dr. John D. Ayers offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Ayers as offering telehealth services.
What is Dr. John D. Ayers' MIPS score?
Dr. Ayers' MIPS final score for performance year 2024 is 96 out of 100, reported through an alternative payment model (APM).
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. John D. Ayers see?
CMS counts 489 Medicare patients who saw Dr. Ayers in 2024, with an average age of 75.
What services does Dr. John D. Ayers bill to Medicare?
In 2024, Dr. Ayers' most billed Medicare services were office visit, established patient (99215), medicare service (G2211) and office visit, established patient (99214).
Where did Dr. John D. Ayers go to medical school?
Dr. Ayers graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1995.
What drugs does Dr. John D. Ayers prescribe most?
In 2024 Medicare Part D data, Dr. Ayers' most prescribed drugs by claims were Tamoxifen Citrate, Letrozole and Raloxifene HCl.
Has Dr. John D. Ayers received payments from drug or device companies?
CMS Open Payments shows $1,996 in general payments to Dr. Ayers from 6 companies from 2019 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. John D. Ayers been practicing?
Dr. Ayers graduated from medical school in 1995, 31 years ago.
Does Dr. John D. Ayers do research?
Dr. Ayers has worked on 10 clinical trials.
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