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Dr. John R. Principe, MD
NPI1639285810
- Medicare services, 2023
- 117
- Part D claims, 2024
- 242
- Publications
- 1
- Hospital affiliations
- 1
- Industry payments
- $21
- 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. Principe's 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 R. Principe is an internist in Winfield, Illinois
Dr. Principe practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare.
Dr. Principe's NPI, 1639285810, was assigned on August 21, 2006. Dr. Principe graduated from Rush Medical College of Rush University in 1984. Dr. Principe holds Illinois license 036071432.
NPI and contact details
- NPI
- 1639285810NPI Registry (opens in a new tab)
- NPI enumeration date
- August 21, 2006
- NPI status
- Active
- Practice phone
- (630) 682-1600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John R. Principe practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois
Dr. Principe's 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 R. Principe is affiliated with 3 sites of care
Dr. Principe's primary practice is Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Dr. Principe to 1 breast imaging center and 1 clinical lab, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John R. Principe's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Principe practices, 3 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 |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John R. Principe is one of 5,652 internists in Illinois
Internal medicine is Dr. Principe's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Principe is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Principe
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
5,652internists in Illinois150internists in Winfield134internists at Northwestern Medicine Central DuPage Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John R. Principe billed Medicare for 117 services in 2023
CMS data shows 117 Medicare services from Dr. Principe across 2 procedure codes in 2023, all of them office visits. Medicare paid $10,870 for them. Every service was in an office.
Medicare services, 2023117
Paid by Medicare$10,870
Procedure codes2
Dr. Principe's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 2752023: 11757%
Dr. Principe compared with the Illinois median for internists, 2023
- Dr. Principe
- Illinois median
- Medicare services
- 117vs 56679% below
- Part D claims
- 57vs 28480% below
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Principe'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.
Need commercial claims for Dr. Principe?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Principe and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John R. Principe's patients have a median age of 76
Across all payers, Dmand AI patient panel data puts Dr. Principe's median patient age at 76, with 45% women.
Dr. Principe's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women45%
- Men53%
Source: Dmand AI Patient Panel Data
Dr. John R. Principe wrote 242 Medicare Part D claims in 2024
In 2024, Dr. Principe wrote 242 Medicare Part D claims for 53 patients. 79% of them were for generic drugs. CMS names the drug for 57 of them, across 4 drugs with 11 or more claims each, at $7,714 in total drug cost. In 2023, CMS named 567 claims across 26 drugs.
Part D claims, 2024242
Drugs named by CMS4
Total drug cost$7,714
Part D patients53
Dr. Principe's Part D claims by kind of drug, 2024
- Generic191 claims79%
- Brand-name34 claims14%
- Other17 claims7%
Dr. Principe's 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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5672024: 5790%
Drugs named by CMS: 4 in 2024, 26 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
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Dr. John R. Principe has 1 publication on record
Dmand AI links 1 paper to Dr. Principe. Dr. Principe's most frequent co-authors are Shaili Deveshwar, MD, Edmund John Maclaughlin, MD and Craig M. Mines, MD.
Papers1
Dr. Principe's most frequent co-authors
- Shaili Deveshwar, MD1 shared paper
- Edmund John Maclaughlin, MD1 shared paper
- Craig M. Mines, MD1 shared paper
Recent publications by Dr. Principe
See who Dr. Principe researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Principe works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John R. Principe received $21 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Principe from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $21.
Companies that paid Dr. Principe the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John R. Principe graduated from Rush Medical College of Rush University
Dr. Principe graduated from Rush Medical College of Rush University in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John R. Principe'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) |
| Publications, topics and co-authors | PubMed (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 R. Principe
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 R. Principe's NPI number?
Dr. John R. Principe's NPI number is 1639285810. It was assigned on August 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John R. Principe?
Dr. John R. Principe is an internist in Winfield, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John R. Principe practice?
Dr. Principe practices at 25 North Winfield Road, Winfield, IL 60190. Dr. Principe's primary practice is Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Dr. Principe to 1 breast imaging center and 1 clinical lab.
What is Dr. John R. Principe's office phone number?
The practice phone on file for Dr. Principe is (630) 682-1600.
What is Dr. John R. Principe's medical license number?
Dr. Principe holds Illinois license 036071432.
Which hospitals is Dr. John R. Principe affiliated with?
Dr. Principe practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois.
Does Dr. John R. Principe accept Medicare?
Yes. CMS data shows Dr. Principe billed Medicare for 117 services in 2023.
What services does Dr. John R. Principe bill to Medicare?
In 2023, Dr. Principe's most billed Medicare services were office visit, established patient (99215) and office visit, established patient (99214).
Where did Dr. John R. Principe go to medical school?
Dr. Principe graduated from Rush Medical College of Rush University in 1984.
What drugs does Dr. John R. Principe prescribe most?
In 2024 Medicare Part D data, Dr. Principe's most prescribed drugs by claims were Levothyroxine Sodium, Armour Thyroid and Glucagon Emergency Kit.
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Has Dr. John R. Principe received payments from drug or device companies?
CMS Open Payments shows $21 in general payments to Dr. Principe from 1 company from 2016 to 2016. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. John R. Principe been practicing?
Dr. Principe graduated from medical school in 1984, 42 years ago.
Does Dr. John R. Principe do research?
Dmand AI links 1 publication to Dr. Principe.
Who does Dr. John R. Principe publish with?
Dr. Principe's most frequent co-authors are Shaili Deveshwar, MD (1 shared paper), Edmund John Maclaughlin, MD (1 shared paper) and Craig M. Mines, MD (1 shared paper).
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