William Alexander Estes, MD
Hospitalist Physician · Hinsdale, IL
William Alexander Estes, MD is a hospitalist physician with a practice address in Hinsdale, Illinois, and NPI 1710515150, issued on Mar 31, 2020. Check the license (Illinois 036169750, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- William Alexander Estes
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- 036169750 IL
036-169750 IL
Self-reported in NPPES; status is on the state search - Practice location
- 120 N Oak St, Hinsdale, IL 60521
- Phone
- (630) 856-9000
- Enumerated
- Mar 31, 2020
- Record last updated
- Jun 17, 2025
- Medicare enrollment
- Enrolled (PECOS I20240626002505); accepts Medicare assignment
- Medical or professional school
- Texas A & M University System, Hsc, College Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 1,535 in Illinois → Look up another NPI →
Also registered at 120 N Oak St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Yasmeen Bader, DNP, CNMAdvanced Practice Midwife1649953381
- Kimberly Baran, DONeonatal-Perinatal Medicine Physician1447749163
Verify William Alexander Estes 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 036169750Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average hospitalist physician in 2024
175 Medicare Part D claims for 95 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Amlodipine Besylate11 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: $313.49
6 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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 2 group practices
- Advance Inpatient Medicine LLCHinsdale, IL
- Perioperative And Transitional Medicine Group PLLCDallas, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Alexander Estes among 1,535 hospitalist physician records in Illinois
William Alexander Estes, 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 Hinsdale → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Sean Paknoosh, DOHinsdale, IL 605211336881762
- Malaika Peart, MDHinsdale, IL 605211801095401
- Roy Settergren, M.D.Hinsdale, IL 605211194055863
- Alaa ZaiedHinsdale, IL 605211306341391
- Ravi George, D.O.Oak Brook, IL 605231033151873
- Heather Huston, MDOak Brook, IL 605231245805134
- Adrian Jova, D.O.Oak Brook, IL 605231205295144
- Arun Jacob, MDLa Grange, IL 605251720608011
Common questions
What is William Alexander Estes, MD's NPI number?
William Alexander Estes, MD's National Provider Identifier (NPI) is 1710515150, issued on Mar 31, 2020. An NPI identifies a provider in billing; it is not a license.
Where is William Alexander Estes, MD located?
The NPPES record lists a practice address at 120 N Oak St, Hinsdale, IL, 60521. Phone: (630) 856-9000. Providers update this record themselves, so call before visiting.
How can I verify William Alexander Estes, MD's license?
NPPES lists Illinois license number 036169750, 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 William Alexander Estes, MD prescribe under Medicare Part D?
In 2024, William Alexander Estes, MD had 175 Medicare Part D claims for 95 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.