Katherine Louise Welker, M.D.
Emergency Medicine Physician · Chicago, IL
Katherine Louise Welker, M.D. is an emergency medicine physician with a practice address in Chicago, Illinois, and NPI 1699064857, issued on Mar 28, 2011. Check the license (Illinois 036135583, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Katherine Louise Welker
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 036135583 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1917 W Evergreen Ave, Chicago, IL 60622
- Phone
- (619) 201-3982
- Enumerated
- Mar 28, 2011
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Verify Katherine Louise Welker 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 036135583Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% more Medicare Part D claims than the average emergency medicine physician in 2024
286 Medicare Part D claims for 171 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 36 claims were for opioids.
Most prescribed
- Ondansetron Odt37 claims
- Hydrocodone-Acetaminophen28 claims
- Cefpodoxime Proxetil27 claims
- Ibuprofen23 claims
- Doxycycline Monohydrate14 claims
- Cephalexin13 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.
1,310 emergency medicine physician records list a practice address in Chicago
They are 1,310 of the 63,379 NPPES records with a practice address in Chicago, and 3,291 emergency medicine physician records in Illinois.
All 1,310 in Chicago → All 3,291 in Illinois → Every provider in Chicago →
Other emergency medicine physician records in Illinois
- Osama Aaflaq, M.D.Carbondale, IL1083663520
- Suresh Abad, M.D.Vernon Hills, IL1639100126
- Albert Abalos, M.D.Elmhurst, IL1881983484
- Habib Abbasi, M.D.Joliet, IL1902832835
- Andrew Abbeg, D.O.Greenville, IL1548490311
- Ryan Abbott, DOChicago, IL1477243517
- Ahmad Abdulla, MDOak Lawn, IL1467202556
- Zakaria Abdulnabi, M.D.Urbana, IL1790135499
- Aziz Abed, M.D.Harvey, IL1477874154
- Logan Abel, MDChicago, IL1447900592
Common questions
What is Katherine Louise Welker, M.D.'s NPI number?
Katherine Louise Welker, M.D.'s National Provider Identifier (NPI) is 1699064857, issued on Mar 28, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Louise Welker, M.D. located?
The NPPES record lists a practice address at 1917 W Evergreen Ave, Chicago, IL, 60622. Phone: (619) 201-3982. Providers update this record themselves, so call before visiting.
How can I verify Katherine Louise Welker, M.D.'s license?
NPPES lists Illinois license number 036135583, 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 Katherine Louise Welker, M.D. prescribe under Medicare Part D?
In 2024, Katherine Louise Welker, M.D. had 286 Medicare Part D claims for 171 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.