Dr. Xavier W. Parreno, MD
- Medicare services, 2024
- 1,865
- Medicare patients, 2024
- 240
- Part D claims, 2024
- 11,331
- MIPS score, 2024
- 100
- Hospital affiliations
- 4
- Practice address
- 135 Greenleaf St, Gurnee, IL 60031-3334
- Practice phone
- Call (847) 336-2150
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Xavier Parreno MD
Physician office · Gurnee, Illinois
Find Dr. Parreno'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. Xavier W. Parreno is an internist in Gurnee, Illinois
Dr. Parreno practices at Xavier Parreno MD in Gurnee, Illinois.
Dr. Parreno's NPI, 1023085479, was assigned on March 3, 2006. Dr. Parreno graduated from R Franklin University of Med & Sci/Chicago Medical School in 1995. Dr. Parreno holds Illinois license 036097735.
- NPI
- 1023085479NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991749228
- NPI enumeration date
- March 3, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (847) 336-2150
- 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. Xavier W. Parreno practices at Xavier Parreno MD in Gurnee, Illinois
Dr. Parreno's primary practice is Xavier Parreno MD, at 135 Greenleaf St, Gurnee, IL 60031-3334. The practice phone is (847) 336-2150.
- Xavier Parreno MD135 Greenleaf St, Gurnee, IL 60031-3334Phone(847) 336-2150
Source: Dmand AI Affiliation Data
Dr. Xavier W. Parreno is affiliated with 7 sites of care and 1 medical group
Dr. Parreno's primary practice is Xavier Parreno MD in Gurnee, Illinois. Dr. Parreno is also affiliated with Northwestern Medicine Central DuPage Hospital. The medical group on file is Warren G. Murray Developmental Center. Dmand AI also links Dr. Parreno to 3 more hospitals and 2 home health agencies, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Xavier W. Parreno's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Parreno practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Xavier Parreno MD | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Xavier W. Parreno is one of 5,652 internists in Illinois
Internal medicine is Dr. Parreno's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Parreno is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Parreno
Counts of internists 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. Xavier W. Parreno billed Medicare for 1,865 services in 2024
CMS data shows 1,865 Medicare services from Dr. Parreno across 13 procedure codes in 2024, for 240 Medicare patients. Medicare paid $114,442 for them. Every service was in an office.
Dr. Parreno's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,5132024: 1,4236%
- Surgery
- 2023: 3412024: 27420%
- Other services
- 2023: 1282024: 1291%
- Lab and pathology
- 2023: 402024: 393%
- Tests and treatments
- 2023: 172024: 0100%
Dr. Parreno compared with the Illinois median for internists, 2024
- Dr. Parreno
- Illinois median
- Medicare services
- 1,865vs 5663.3 times
- Medicare patients
- 240vs 20815% above
- Part D claims
- 10,714vs 28437.7 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Parreno's 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Parreno and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Xavier W. Parreno treated 240 Medicare patients in 2024, average age 74
CMS counts 240 Medicare patients who saw Dr. Parreno in 2024. The largest group is 65 to 74, with 99 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 48% are also on Medicaid. Their average risk score is 1.48, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Parreno's median patient age at 63, with 53% women.
Dr. Parreno's Medicare patients by age, 2024
Dr. Parreno's Medicare patients by sex, 2024
- Women13355%
- Men10745%
Chronic conditions among Dr. Parreno's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes57%
- Arthritis47%
- Chronic kidney disease35%
- Mood disorders26%
- Depression24%
- Ischemic heart disease23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Parreno's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Xavier W. Parreno wrote 11,331 Medicare Part D claims in 2024
In 2024, Dr. Parreno wrote 11,331 Medicare Part D claims for 345 patients. 78% of them were for generic drugs. CMS names the drug for 10,714 of them, across 152 drugs with 11 or more claims each, at $1,602,935 in total drug cost. In 2023, CMS named 10,443 claims across 158 drugs.
Dr. Parreno's Part D claims by kind of drug, 2024
- Generic8,816 claims78%
- Brand-name2,341 claims21%
- Other174 claims2%
Dr. Parreno'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.
Drug classes CMS tracks in Dr. Parreno's Part D claims, 2024
- Antibiotics1%149 of 11,331 claims
- Antipsychotics, patients 65 and over0%33 of 11,331 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: 10,4432024: 10,7143%
Drugs named by CMS: 152 in 2024, 158 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. Xavier W. Parreno scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Parreno for performance year 2024, reported individually. Dr. Parreno accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Parreno as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Parreno's MIPS scores, performance year 2024
- 100of 100Final score
- 100of 100Quality
- 40of 100Improvement Activities
- 80of 100Cost
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. Xavier W. Parreno received $52,461 in industry payments from 2016 to 2025
CMS Open Payments shows 2,377 general payments to Dr. Parreno from 60 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. AstraZeneca Pharmaceuticals LP paid the most, $7,595.
General payments to Dr. Parreno by program year, 2016 to 2025
General payments to Dr. Parreno by kind, 2016 to 2025
- Food and beverage$50,71597%
- Consulting fees$8962%
- Education$8362%
- Speaker and faculty fees$140%
Companies that paid Dr. Parreno the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Xavier W. Parreno graduated from R Franklin University of Med & Sci/Chicago Medical School
Dr. Parreno graduated from R Franklin University of Med & Sci/Chicago Medical School in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Xavier W. Parreno'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 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) |
| 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. Xavier W. Parreno
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. Xavier W. Parreno's NPI number?
Dr. Xavier W. Parreno's NPI number is 1023085479. It was assigned on March 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Xavier W. Parreno?
Dr. Xavier W. Parreno is an internist in Gurnee, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Xavier W. Parreno practice?
Dr. Parreno practices at 135 Greenleaf St, Gurnee, IL 60031-3334. Dr. Parreno's primary practice is Xavier Parreno MD in Gurnee, Illinois. Dmand AI also links Dr. Parreno to 3 hospitals and 2 home health agencies.
What is Dr. Xavier W. Parreno's office phone number?
The practice phone on file for Dr. Parreno is (847) 336-2150.
What is Dr. Xavier W. Parreno's medical license number?
Dr. Parreno holds Illinois license 036097735.
Which hospitals is Dr. Xavier W. Parreno affiliated with?
Dr. Parreno is affiliated with Northwestern Medicine Central DuPage Hospital. Dmand AI links Dr. Parreno to 3 more hospitals.
What medical group is Dr. Xavier W. Parreno part of?
Dr. Parreno is linked to Warren G. Murray Developmental Center.
Does Dr. Xavier W. Parreno accept Medicare?
Yes. CMS data shows Dr. Parreno billed Medicare for 1,865 services in 2024, and Dr. Parreno accepts Medicare assignment.
Does Dr. Xavier W. Parreno offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Parreno as offering telehealth services.
What is Dr. Xavier W. Parreno's MIPS score?
Dr. Parreno's MIPS final score for performance year 2024 is 100 out of 100, reported individually.
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How many Medicare patients does Dr. Xavier W. Parreno see?
CMS counts 240 Medicare patients who saw Dr. Parreno in 2024, with an average age of 74.
What services does Dr. Xavier W. Parreno bill to Medicare?
In 2024, Dr. Parreno's most billed Medicare services were office visit, established patient (99214), care management and other visits (99490) and surgery: heart and blood vessels (36415).
Where did Dr. Xavier W. Parreno go to medical school?
Dr. Parreno graduated from R Franklin University of Med & Sci/Chicago Medical School in 1995.
What drugs does Dr. Xavier W. Parreno prescribe most?
In 2024 Medicare Part D data, Dr. Parreno's most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Levocetirizine Dihydrochloride.
Has Dr. Xavier W. Parreno received payments from drug or device companies?
CMS Open Payments shows $52,461 in general payments to Dr. Parreno from 60 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Xavier W. Parreno been practicing?
Dr. Parreno graduated from medical school in 1995, 31 years ago.
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