Ross Mamaril, FNP
Family Nurse Practitioner · Chicago, IL
Ross Mamaril, FNP is a family nurse practitioner with a practice address in Chicago, Illinois, and NPI 1043845027, issued on Mar 10, 2020. Check the license (Illinois 209.020575, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ross Mamaril
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 209.020575 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4815 S Western Blvd, Chicago, IL 60609
- Phone
- (773) 927-4200
- Enumerated
- Mar 10, 2020
- Record last updated
- Mar 10, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200324000620); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 7,639 in Illinois → Look up another NPI →
Also registered at 4815 S Western Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Doreen Vaughn, COTAOccupational Therapy Assistant1619143617
Verify Ross Mamaril in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209.020575Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% more Medicare Part D claims than the average family nurse practitioner in 2024
2,317 Medicare Part D claims for 219 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Atorvastatin Calcium643 claims
- Hydralazine Hcl223 claims
- Losartan Potassium194 claims
- Furosemide184 claims
- Amlodipine Besylate177 claims
- Jardiance171 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 practice group's MIPS final score for 2023 (Medicare payment program): 74.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Telemedico Physicians SCSkokie, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ross Mamaril among 7,639 family nurse practitioner records in Illinois
Ross Mamaril, FNP is one of 7,639 family nurse practitioner records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 59% of them.
- NPI issued2020 · 59% of these records are older, 35% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2019 · median 2018 among the 4,778 with a school on file
- Record last updated2020 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,567 family nurse practitioner records list a practice address in Chicago
They are 1,567 of the 63,379 NPPES records with a practice address in Chicago, and 7,639 family nurse practitioner records in Illinois.
All 7,639 in Illinois → Every provider in Chicago → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
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- Danielle Hannigan, APNChicago, IL 606091417257247
- Kenya Hemingway, FNPChicago, IL 606091093083420
- Doris IhejietoChicago, IL 606091144984915
- Judith McDevitt, PHD, NPChicago, IL 606091497765168
- Carmen Mei, DNP, ARNP, FNP-CChicago, IL 606091760040372
- Nycole MooreChicago, IL 606091760365753
Common questions
What is Ross Mamaril, FNP's NPI number?
Ross Mamaril, FNP's National Provider Identifier (NPI) is 1043845027, issued on Mar 10, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Ross Mamaril, FNP located?
The NPPES record lists a practice address at 4815 S Western Blvd, Chicago, IL, 60609. Phone: (773) 927-4200. Providers update this record themselves, so call before visiting.
How can I verify Ross Mamaril, FNP's license?
NPPES lists Illinois license number 209.020575, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Ross Mamaril, FNP prescribe under Medicare Part D?
In 2024, Ross Mamaril, FNP had 2,317 Medicare Part D claims for 219 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Ross Mamaril, FNP's MIPS final score?
The 2023 MIPS final score is 74.6 of 100, reported for the practice group. 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.