Timothy Alan Williams, MD
Hospitalist Physician · Chicago, IL
Timothy Alan Williams, MD is a hospitalist physician with a practice address in Chicago, Illinois, and NPI 1124645700, issued on Jun 30, 2020. Check the license (Illinois 036163881, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Timothy Alan Williams
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- 036163881 IL
125.077201 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1625 E 75TH St FL 1, Chicago, IL 60649
- Phone
- (773) 947-7310
- Enumerated
- Jun 30, 2020
- Record last updated
- Jan 23, 2025
- Medicare enrollment
- Enrolled (PECOS I20230804001182); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 1,535 in Illinois → Look up another NPI →
Also registered at 1625 E 75TH St FL 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Syed Hussain, MDFamily Medicine Physician1255176558
Verify Timothy Alan 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 036163881Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average hospitalist physician in 2024
339 Medicare Part D claims for 139 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Prednisone25 claims
- Atorvastatin Calcium22 claims
- Pantoprazole Sodium22 claims
- Furosemide21 claims
- Amlodipine Besylate11 claims
- Hydralazine Hcl11 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.
Industry payments in 2024: $15.82
1 payment: food and beverage; the largest payer was Pfizer Inc. The 7,324 providers of this specialty with any payment received $494.84 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 one group practice
- University OF ChicagoChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy Alan Williams among 1,535 hospitalist physician records in Illinois
Timothy Alan Williams, MD is one of 1,535 hospitalist physician records with a practice address in Illinois. 92% 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 79% of them.
- NPI issued2020 · 79% of these records are older, 14% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 87% of these records are
- Graduated2019 · median 2013 among the 1,339 with a school on file
- Record last updated2025 · 32% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Illinois
There are 1,535 hospitalist physician records in Illinois.
All 1,535 in Illinois → Every provider in Chicago → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Danish Ahmed, M.D.Chicago, IL 606571083819684
- Ryan Blanco, D.OChicago, IL 606571881852523
- Andrew ChetChicago, IL 606571033422811
- Chioma Ezeani, M.DChicago, IL 606571134402670
- Emmanuel Favila, D.O.Chicago, IL 606571164721528
- Noel-Marie Fischre, MDChicago, IL 606411710333000
- Efren Jason Jorge, MDChicago, IL 606571578712238
- Tarek Karaman, M.D.Chicago, IL 606571104846674
Common questions
What is Timothy Alan Williams, MD's NPI number?
Timothy Alan Williams, MD's National Provider Identifier (NPI) is 1124645700, issued on Jun 30, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Alan Williams, MD located?
The NPPES record lists a practice address at 1625 E 75TH St FL 1, Chicago, IL, 60649. Phone: (773) 947-7310. Providers update this record themselves, so call before visiting.
How can I verify Timothy Alan Williams, MD's license?
NPPES lists Illinois license number 036163881, 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 Timothy Alan Williams, MD prescribe under Medicare Part D?
In 2024, Timothy Alan Williams, MD had 339 Medicare Part D claims for 139 beneficiaries; the average among hospitalist physician prescribers was 521. 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.