Ramon Mercado Castillo, M.D.
Occupational Medicine Physician · Elk Grove Village, IL
Ramon Mercado Castillo, M.D. is an occupational medicine physician with a practice address in Elk Grove Village, Illinois, and NPI 1124130083, issued on Aug 31, 2006. Check the license (Illinois 036108343, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Ramon Mercado Castillo
- Credential
- M.D.
- Primary taxonomy
- Occupational Medicine Physician 2083X0100X
- License number
- 036108343 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1502 Elmhurst RD, Elk Grove Village, IL 60007
- Phone
- (847) 228-0515
- Enumerated
- Aug 31, 2006
- Record last updated
- May 10, 2024
- Fax
- (630) 932-8191
- Medicaid ID
- 036108343 IL
- Entity
- Type 1 · individual
8 nearest occupational medicine physician records → All 80 in Illinois → Look up another NPI →
Also registered at 1502 Elmhurst RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amisha Baker, PA-CPhysician Assistant1134184500
- George Pitsilos, M.D.Internal Medicine Physician1487660148
Verify Ramon Mercado Castillo 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 036108343Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average occupational medicine physician in 2024
18 Medicare Part D claims, against an average of 794 among the 463 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.
Ramon Mercado Castillo among 80 occupational medicine physician records in Illinois
Ramon Mercado Castillo, M.D. is one of 80 occupational medicine physician records with a practice address in Illinois. 28% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 61% newer
- In a Medicare fileYes · 28% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2024 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2083X0100X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Occupational Medicine Physician providers in Illinois
There are 80 occupational medicine physician records in Illinois.
All 80 in Illinois → Every provider in Elk Grove Village → Occupational Medicine Physician nationwide →
The 8 occupational medicine physician records with the nearest ZIP codes
- Stella Anozie, M.D.Crystal Lake, IL 600121720130966
- Julie KwasiborskiGrayslake, IL 600301275505513
- Tracy LyndonGrayslake, IL 600301346210978
- Alexander Jablonowski, M.D.McHenry, IL 600501497807630
- Timothy Trusewych, D.O.Morton Grove, IL 600531912029737
- Howard Chey, M.D.North Chicago, IL 600641922207489
- Tabasum Amir, M.D.Park Ridge, IL 600681891883641
- Jamie KondelisSkokie, IL 600771689789547
Common questions
What is Ramon Mercado Castillo, M.D.'s NPI number?
Ramon Mercado Castillo, M.D.'s National Provider Identifier (NPI) is 1124130083, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ramon Mercado Castillo, M.D. located?
The NPPES record lists a practice address at 1502 Elmhurst RD, Elk Grove Village, IL, 60007. Phone: (847) 228-0515. Providers update this record themselves, so call before visiting.
How can I verify Ramon Mercado Castillo, M.D.'s license?
NPPES lists Illinois license number 036108343, 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 Ramon Mercado Castillo, M.D. prescribe under Medicare Part D?
In 2024, Ramon Mercado Castillo, M.D. had 18 Medicare Part D claims; the average among occupational medicine physician prescribers was 794. 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.