Xavier W. Parreno, M.D.
Internal Medicine Physician · Gurnee, IL
Xavier W. Parreno, M.D. is an internal medicine physician with a practice address in Gurnee, Illinois, and NPI 1023085479, issued on Mar 3, 2006. Check the license (Illinois 036097735, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Xavier W. Parreno
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036097735 IL
Self-reported in NPPES; status is on the state search - Practice location
- 135 N Greenleaf St, Gurnee, IL 60031
- Phone
- (847) 336-2150
- Enumerated
- Mar 3, 2006
- Record last updated
- Mar 30, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (847) 336-2160
- Medicaid ID
- 036097735 IL
- Medicare enrollment
- Enrolled (PECOS I20050617000214); accepts Medicare assignment
- Medical or professional school
- R Franklin University Of Med & Sci/Chicago Medical School, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 135 N Greenleaf St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Daun BlainProfessional Counselor1457544819
- Ashley Cho, FNP-BCFamily Nurse Practitioner1699250258
- Denise Eaves, LCSW, CEAPClinical Social Worker1578705356
- Donna Herula, MS, LCPC, LMFT, CADCCounselor1821164716
- Melissa Kostial-Janos, LCSW, ACSWMental Health Counselor1811164783
Verify Xavier W. Parreno in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036097735Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.6 times the Medicare Part D claims of the average internal medicine physician in 2024
11,331 Medicare Part D claims for 345 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Atorvastatin Calcium559 claims
- Rosuvastatin Calcium410 claims
- Levocetirizine Dihydrochloride367 claims
- Amlodipine Besylate338 claims
- Metformin Hcl276 claims
- Lisinopril260 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 91.9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $5,820.28
249 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Xavier W. Parreno among 7,238 internal medicine physician records in Illinois
Xavier W. Parreno, M.D. is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1995 · median 2003 among the 3,580 with a school on file
- Record last updated2017 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
28 internal medicine physician records list a practice address in Gurnee
They are 28 of the 846 NPPES records with a practice address in Gurnee, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Gurnee → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Vivek Arora, M.D.Gurnee, IL 600311194712638
- Melissa Chen, M.D.Gurnee, IL 600311942261516
- Regan Christopoulos, MDGurnee, IL 600311740231596
- Efren Estrella, M.D.Gurnee, IL 600311053341172
- Mohammad Kagzi, MDGurnee, IL 600311659347409
- Jason Kramer, M.D.Gurnee, IL 600311093746927
- James Monahan, MDGurnee, IL 600311760478499
- Joseph Mun, MDGurnee, IL 600311588635940
Common questions
What is Xavier W. Parreno, M.D.'s NPI number?
Xavier W. Parreno, M.D.'s National Provider Identifier (NPI) is 1023085479, issued on Mar 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Xavier W. Parreno, M.D. located?
The NPPES record lists a practice address at 135 N Greenleaf St, Gurnee, IL, 60031. Phone: (847) 336-2150. Providers update this record themselves, so call before visiting.
How can I verify Xavier W. Parreno, M.D.'s license?
NPPES lists Illinois license number 036097735, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Xavier W. Parreno, M.D. prescribe under Medicare Part D?
In 2024, Xavier W. Parreno, M.D. had 11,331 Medicare Part D claims for 345 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Xavier W. Parreno, M.D.'s MIPS final score?
The 2023 MIPS final score is 91.9 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.