Joseph L. Mastro, M.D.
Emergency Medicine Physician · Rochelle, IL
Joseph L. Mastro, M.D. is an emergency medicine physician with a practice address in Rochelle, Illinois, and NPI 1346212461, issued on Feb 2, 2006. Check the license (Illinois 036093835, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Joseph L. Mastro
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 036093835 IL
Self-reported in NPPES; status is on the state search - Practice location
- 900 N 2ND St, Rochelle, IL 61068
- Phone
- (815) 562-2181
- Enumerated
- Feb 2, 2006
- Record last updated
- Dec 9, 2025
- Medicaid ID
- 036093835 IN
- Medicare enrollment
- Enrolled (PECOS I20041221000407); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1994
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Also registered at 900 N 2ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carson Andrew, PA-CPhysician Assistant1396264339
- Marilyn Balch, APNNurse Practitioner1982773859
- Olivia Caron, DPTPhysical Therapist1447730650
- Crystal Carty, R.PH.Pharmacist1649314931
- Christine Gorman, MDFamily Medicine Physician1376656645
- Adam HallOrthopedic Physical Therapist1063882090
Verify Joseph L. Mastro 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 036093835Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average emergency medicine physician in 2024
56 Medicare Part D claims for 43 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through 2 group practices
- Northwestern Medical Faculty FoundationGlen Ellyn, IL
- Rochelle Community Hospital AssociationRochelle, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph L. Mastro among 3,291 emergency medicine physician records in Illinois
Joseph L. Mastro, M.D. is one of 3,291 emergency medicine physician records with a practice address in Illinois. 80% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 68% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1994 · median 2012 among the 1,867 with a school on file
- Record last updated2025 · 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 207P00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 emergency medicine physician records list a practice address in Rochelle
They are 2 of the 177 NPPES records with a practice address in Rochelle, and 3,291 emergency medicine physician records in Illinois.
All 3,291 in Illinois → Every provider in Rochelle → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Ian Todd, MDRochelle, IL 610681346331931
- Susan Gould, MDRock Falls, IL 610711578534889
- Divaker Kattar, M.D.Sterling, IL 610811821040650
- Jose Libunao, M.D.Sterling, IL 610811578516357
- Mark Mench, M.D.Sterling, IL 610811750333589
- Pedro Peralta, M.D.Sterling, IL 610811619929387
- Andrew West, MDSterling, IL 610811447247051
- Ralph Losey, MDGalena, IL 610361447297270
Common questions
What is Joseph L. Mastro, M.D.'s NPI number?
Joseph L. Mastro, M.D.'s National Provider Identifier (NPI) is 1346212461, issued on Feb 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph L. Mastro, M.D. located?
The NPPES record lists a practice address at 900 N 2ND St, Rochelle, IL, 61068. Phone: (815) 562-2181. Providers update this record themselves, so call before visiting.
How can I verify Joseph L. Mastro, M.D.'s license?
NPPES lists Illinois license number 036093835, 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 Joseph L. Mastro, M.D. prescribe under Medicare Part D?
In 2024, Joseph L. Mastro, M.D. had 56 Medicare Part D claims for 43 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.