J Eric D. Castro, MD
Emergency Medicine Physician · Libertyville, IL
J Eric D. Castro, MD is an emergency medicine physician with a practice address in Libertyville, Illinois, and NPI 1316971807, issued on Jul 10, 2006. Check the license (Illinois 036103419, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- J Eric D. Castro
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 036103419 IL
71511 AZ
53459-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1105 W Park Ave Ste 7, Libertyville, IL 60048
- Phone
- (847) 773-0369
- Enumerated
- Jul 10, 2006
- Record last updated
- Oct 20, 2023
- Fax
- (847) 201-2573
- Medicaid IDs
- 036103419 IL
1316971807 WI - Medicare enrollment
- Enrolled (PECOS I20031218000215); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1998
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Verify J Eric D. Castro 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 036103419Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average emergency medicine physician in 2024
163 Medicare Part D claims for 128 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 43 claims were for opioids.
Most prescribed
- Tramadol Hcl22 claims
- Hydrocodone-Acetaminophen20 claims
- Cephalexin15 claims
- Azithromycin13 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.
Bills Medicare through 3 group practices
- Aurora Emergency Physicians LLCAurora, IL
- Hoopeston Emergency Medicine Specialists LtdHoopeston, IL
- Riverside Emergency Physicians LLCKankakee, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
J Eric D. Castro among 3,291 emergency medicine physician records in Illinois
J Eric D. Castro, MD 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
- Graduated1998 · median 2012 among the 1,867 with a school on file
- Record last updated2023 · 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).
15 emergency medicine physician records list a practice address in Libertyville
They are 15 of the 1,361 NPPES records with a practice address in Libertyville, and 3,291 emergency medicine physician records in Illinois.
All 3,291 in Illinois → Every provider in Libertyville → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Christopher Beach, M.D.Libertyville, IL 600481649245564
- Andrew Geiser, MDLibertyville, IL 600481891343133
- Joshua Hallett, D.O.Libertyville, IL 600481336452861
- Roy Horras, M.D., FACEPLibertyville, IL 600481255356663
- Shahab Kazi, DOLibertyville, IL 600481194306894
- Peter Kurko, M.D.Libertyville, IL 600481225065782
- Rachel McDowell, MDLibertyville, IL 600481104879071
- Dimitrios Mougolias, M.D.Libertyville, IL 600481053520700
Common questions
What is J Eric D. Castro, MD's NPI number?
J Eric D. Castro, MD's National Provider Identifier (NPI) is 1316971807, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is J Eric D. Castro, MD located?
The NPPES record lists a practice address at 1105 W Park Ave Ste 7, Libertyville, IL, 60048. Phone: (847) 773-0369. Providers update this record themselves, so call before visiting.
How can I verify J Eric D. Castro, MD's license?
NPPES lists Illinois license number 036103419, 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 J Eric D. Castro, MD prescribe under Medicare Part D?
In 2024, J Eric D. Castro, MD had 163 Medicare Part D claims for 128 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.