Dr. John Austin Defrate, MD
- Medicare services, 2023
- 493
- Part D claims, 2024
- 27
- Hospital affiliations
- 1
- Industry payments
- $71
- State licenses
- 2
- Practice address
- 4755 Ogletown-Stanton Road, Newark, DE 19718
- Practice phone
- Call (302) 733-3609
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Defrate's professional email, personal email and mobile number
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Dr. John Austin Defrate is a neurologist in Newark, Delaware
Dr. Defrate practices at Christiana Hospital in Newark, Delaware, part of ChristianaCare.
Dr. Defrate's NPI, 1346266863, was assigned on July 15, 2006. Dr. Defrate graduated from Medical University of South Carolina College of Medicine in 1981. Dr. Defrate holds Delaware license CL0005148.
- NPI
- 1346266863NPI Registry (opens in a new tab)
- NPI enumeration date
- July 15, 2006
- NPI status
- Active
- Practice phone
- (302) 733-3609
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 71
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John Austin Defrate practices at Christiana Hospital in Newark, Delaware
Dr. Defrate's primary practice is Christiana Hospital, at 4755 Ogletown-Stanton Road, Newark, DE 19718 in New Castle County. The practice phone is (302) 733-3609.
- Christiana Hospital4755 Ogletown-Stanton Road, Newark, DE 19718 · New Castle CountyPhone(302) 733-3609
Source: Dmand AI Affiliation Data
Dr. John Austin Defrate is affiliated with 2 sites of care
Dr. Defrate's primary practice is Christiana Hospital in Newark, Delaware, part of ChristianaCare. Dmand AI also links Dr. Defrate to 1 dialysis center, named with a free account. Dr. Defrate's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Austin Defrate's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Defrate practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Christiana Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across ChristianaCare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Austin Defrate is one of 65 neurologists in Delaware
Neurology is Dr. Defrate's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dmand AI has Dr. Defrate's licenses on file in 2 states: Delaware and Pennsylvania.
Specialties and state licenses
- Neurology, DelawarePrimary
- Pennsylvania license
Neurologists near Dr. Defrate
Counts of neurologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John Austin Defrate billed Medicare for 493 services in 2023
CMS data shows 493 Medicare services from Dr. Defrate across 4 procedure codes in 2023. Medicare paid $28,389 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Defrate's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 6712023: 49327%
Dr. Defrate compared with the Delaware median for neurologists, 2023
- Dr. Defrate
- Delaware median
- Medicare services
- 493vs 44511% above
- Part D claims
- 72vs 21967% below
Medians across 62 neurologists in Delaware with Dmand AI profiles that report each measure.
Dr. Defrate's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Defrate and other neurologists in Delaware.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Austin Defrate's patients have a median age of 57
Across all payers, Dmand AI patient panel data puts Dr. Defrate's median patient age at 57, with 48% women.
Dr. Defrate's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women48%
- Men52%
Source: Dmand AI Patient Panel Data
Dr. John Austin Defrate wrote 27 Medicare Part D claims in 2024
In 2024, Dr. Defrate wrote 27 Medicare Part D claims. 100% of them were for generic drugs. They cover 5 drugs, with $803 in total drug cost. In 2022, CMS named 112 claims across 7 drugs.
Dr. Defrate's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 1122023: 7236%
Drugs named by CMS: 5 in 2023, 7 in 2022.
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
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Dr. John Austin Defrate received $71 in industry payments from 2018 to 2020
CMS Open Payments shows 4 general payments to Dr. Defrate from 4 drug and device companies from 2018 to 2020. Food and beverage make up the largest share, 100% of the total. Sunovion Pharmaceuticals Inc. paid the most, $22.
General payments to Dr. Defrate by program year, 2018 to 2020
Companies that paid Dr. Defrate the most, 2018 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Austin Defrate graduated from Medical University of South Carolina College of Medicine
Dr. Defrate graduated from Medical University of South Carolina College of Medicine in 1981.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Austin Defrate'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 Data |
| 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) |
| 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 Austin Defrate
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 Austin Defrate's NPI number?
Dr. John Austin Defrate's NPI number is 1346266863. It was assigned on July 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Austin Defrate?
Dr. John Austin Defrate is a neurologist in Newark, Delaware. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. John Austin Defrate practice?
Dr. Defrate practices at 4755 Ogletown-Stanton Road, Newark, DE 19718. Dr. Defrate's primary practice is Christiana Hospital in Newark, Delaware, part of ChristianaCare. Dmand AI also links Dr. Defrate to 1 dialysis center.
What is Dr. John Austin Defrate's office phone number?
The practice phone on file for Dr. Defrate is (302) 733-3609.
What is Dr. John Austin Defrate's medical license number?
Dr. Defrate holds Delaware license CL0005148, one of the licenses on file in 2 states.
Which states has Dr. John Austin Defrate been licensed in?
Dmand AI has state licenses on file for Dr. Defrate in Delaware and Pennsylvania.
Which hospitals is Dr. John Austin Defrate affiliated with?
Dr. Defrate practices at Christiana Hospital in Newark, Delaware.
Does Dr. John Austin Defrate accept Medicare?
Yes. CMS data shows Dr. Defrate billed Medicare for 493 services in 2023.
What services does Dr. John Austin Defrate bill to Medicare?
In 2023, Dr. Defrate's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99231) and hospital inpatient care (99223).
Where did Dr. John Austin Defrate go to medical school?
Dr. Defrate graduated from Medical University of South Carolina College of Medicine in 1981.
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What drugs does Dr. John Austin Defrate prescribe most?
In 2023 Medicare Part D data, Dr. Defrate's most prescribed drugs by claims were Risperidone, Trazodone HCl and Mirtazapine.
Has Dr. John Austin Defrate received payments from drug or device companies?
CMS Open Payments shows $71 in general payments to Dr. Defrate from 4 companies from 2018 to 2020. The largest total came from Sunovion Pharmaceuticals Inc.
How long has Dr. John Austin Defrate been practicing?
Dr. Defrate graduated from medical school in 1981, 45 years ago.
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