Roy K. Werner, MD, MS
Emergency Medicine Physician · Crestwood, IL
Roy K. Werner, MD, MS is an emergency medicine physician with a practice address in Crestwood, Illinois, and NPI 1518952969, issued on Sep 13, 2005. Check the license (Illinois 036115221, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Roy K. Werner
- Credential
- MD, MS
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 036115221 IL
Self-reported in NPPES; status is on the state search - Practice location
- 13448 S. Cicero Avenue, Crestwood, IL 60445
- Phone
- (708) 682-3384
- Enumerated
- Sep 13, 2005
- Record last updated
- Jan 31, 2022
- Fax
- (708) 682-3385
- Medicaid IDs
- 34711600 WI
0439125 IA - Medicare enrollment
- Enrolled (PECOS I20060410000179); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Verify Roy K. Werner 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 036115221Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% more Medicare Part D claims than the average emergency medicine physician in 2024
263 Medicare Part D claims for 175 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 28 claims were for opioids.
Most prescribed
- Ibuprofen44 claims
- Hydrocodone-Acetaminophen25 claims
- Prednisone17 claims
- Cephalexin15 claims
- Ondansetron Odt15 claims
- Sulfamethoxazole-Trimethoprim14 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 one group practice
- Genesis Health SystemSilvis, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Roy K. Werner among 3,291 emergency medicine physician records in Illinois
Roy K. Werner, MD, MS 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2001 · median 2012 among the 1,867 with a school on file
- Record last updated2022 · 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).
Emergency Medicine Physician providers in Illinois
There are 3,291 emergency medicine physician records in Illinois.
All 3,291 in Illinois → Every provider in Crestwood → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- John Dymowski, MDLockport, IL 604411053312280
- Nagui Hanna, M.D.Lockport, IL 604411477578920
- Margaret Bialas, M.D.Morris, IL 604501629001946
- Mark Crockett, M.D.Morris, IL 604501073542403
- Mark Gibson, M.D.Morris, IL 604501275561524
- Andrea Green, MDBolingbrook, IL 604401013546993
- Othman Jibril, DOBolingbrook, IL 604401801871967
- Michael Kryza, M.D.Morris, IL 604501326076845
Common questions
What is Roy K. Werner, MD, MS's NPI number?
Roy K. Werner, MD, MS's National Provider Identifier (NPI) is 1518952969, issued on Sep 13, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Roy K. Werner, MD, MS located?
The NPPES record lists a practice address at 13448 S. Cicero Avenue, Crestwood, IL, 60445. Phone: (708) 682-3384. Providers update this record themselves, so call before visiting.
How can I verify Roy K. Werner, MD, MS's license?
NPPES lists Illinois license number 036115221, 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 Roy K. Werner, MD, MS prescribe under Medicare Part D?
In 2024, Roy K. Werner, MD, MS had 263 Medicare Part D claims for 175 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.