Christy Williams, MD
Emergency Medicine Physician · Lake Forest, IL
Christy Williams, MD is an emergency medicine physician with a practice address in Lake Forest, Illinois, and NPI 1700406352, issued on Apr 23, 2020. Check the license (Illinois 036170097, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Christy Williams
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 036170097 IL
01095329A IN
Self-reported in NPPES; status is on the state search - Practice location
- 1000 N Westmoreland RD, Lake Forest, IL 60045
- Phone
- (847) 535-6150
- Enumerated
- Apr 23, 2020
- Record last updated
- Apr 24, 2025
- Fax
- (847) 535-7801
- Medicare enrollment
- Enrolled (PECOS I20240724000440); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2020
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Also registered at 1000 N Westmoreland RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Christy Williams 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 036170097Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average emergency medicine physician in 2024
37 Medicare Part D claims for 27 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.
Industry payments in 2024: $102.24
1 payment: food and beverage; the largest payer was Iti, Inc. (d/b/a Intra-Cellular Therapies, Inc.). The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Northwestern Medical Faculty FoundationLake Forest, IL
- University OF ChicagoCrown Point, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christy Williams among 3,291 emergency medicine physician records in Illinois
Christy Williams, 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 2020, is newer than 78% of them.
- NPI issued2020 · 78% of these records are older, 18% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2020 · 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).
15 emergency medicine physician records list a practice address in Lake Forest
They are 15 of the 821 NPPES records with a practice address in Lake Forest, and 3,291 emergency medicine physician records in Illinois.
All 3,291 in Illinois → Every provider in Lake Forest → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Paul Been, D.O.Lake Forest, IL 600451194969642
- Jonathan Chuko, MDLake Forest, IL 600451558821660
- Lindsay Jin, MDLake Forest, IL 600451598096190
- David Kawior, M.D.Lake Forest, IL 600451326453093
- Benjamin Kiesel, MDLake Forest, IL 600451679947535
- David Kosturakis, MDLake Forest, IL 600451952669277
- Paul Krivickas, MDLake Forest, IL 600451093920118
- Christopher Lang, MDLake Forest, IL 600451811915440
Common questions
What is Christy Williams, MD's NPI number?
Christy Williams, MD's National Provider Identifier (NPI) is 1700406352, issued on Apr 23, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Christy Williams, MD located?
The NPPES record lists a practice address at 1000 N Westmoreland RD, Lake Forest, IL, 60045. Phone: (847) 535-6150. Providers update this record themselves, so call before visiting.
How can I verify Christy Williams, MD's license?
NPPES lists Illinois license number 036170097, 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 Christy Williams, MD prescribe under Medicare Part D?
In 2024, Christy Williams, MD had 37 Medicare Part D claims for 27 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.