William H. Gros, M.D.
Family Medicine Physician · La Grange, IL
William H. Gros, M.D. is a family medicine physician with a practice address in La Grange, Illinois, and NPI 1316902919, issued on Apr 18, 2006. Check the license (Illinois 036062649, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- William H. Gros
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036062649 IL
Self-reported in NPPES; status is on the state search - Practice location
- 512 W Burlington Ave, La Grange, IL 60525
- Phone
- (630) 579-4801
- Enumerated
- Apr 18, 2006
- Record last updated
- Aug 29, 2023
- Fax
- (630) 579-4805
- Medicaid ID
- 036062649 IL
- Medicare enrollment
- Enrolled (PECOS I20070403000102); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1980
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 512 W Burlington Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Devon James, D.C.Chiropractor1780954198
- Anjali Lyons, MSW, LCSWClinical Social Worker1639494180
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Verify William H. Gros 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 036062649Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average family medicine physician in 2024
7,364 Medicare Part D claims for 545 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 151 claims were for opioids.
Most prescribed
- Atorvastatin Calcium453 claims
- Lisinopril369 claims
- Levothyroxine Sodium334 claims
- Metformin Hcl Er323 claims
- Amlodipine Besylate279 claims
- Simvastatin247 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: $292.63
12 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Dupage Medical Group LtdLagrange, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William H. Gros among 6,215 family medicine physician records in Illinois
William H. Gros, M.D. is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1980 · median 2006 among the 3,714 with a school on file
- Record last updated2023 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 family medicine physician records list a practice address in La Grange
They are 25 of the 511 NPPES records with a practice address in La Grange, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in La Grange → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Guy Agostino, M.D.La Grange, IL 605251992769822
- Vince Bartolomeo, MDLa Grange, IL 605251275558629
- Christopher Brenner, MDCountryside, IL 605251629020102
- Daniel Chen, DOLa Grange Highlands, IL 605251356355812
- Michael Dupont, MDLa Grange Highlands, IL 605251508817750
- Daniel Hunter Smith, MDLa Grange, IL 605251619925963
- Leo Koenig, MDLa Grange, IL 605251013967322
- William Moran, D.O.La Grange, IL 605251407947187
Common questions
What is William H. Gros, M.D.'s NPI number?
William H. Gros, M.D.'s National Provider Identifier (NPI) is 1316902919, issued on Apr 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William H. Gros, M.D. located?
The NPPES record lists a practice address at 512 W Burlington Ave, La Grange, IL, 60525. Phone: (630) 579-4801. Providers update this record themselves, so call before visiting.
How can I verify William H. Gros, M.D.'s license?
NPPES lists Illinois license number 036062649, 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 H. Gros, M.D. prescribe under Medicare Part D?
In 2024, William H. Gros, M.D. had 7,364 Medicare Part D claims for 545 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.