Maria S. Khan, M.D.
Nephrology Physician · Libertyville, IL
Maria S. Khan, M.D. is a nephrology physician with a practice address in Libertyville, Illinois, and NPI 1548476773, issued on May 15, 2007. Check the license (Illinois 036121625, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Maria S. Khan
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 036121625 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1272 American Way, Libertyville, IL 60048
- Phone
- (847) 549-7222
- Enumerated
- May 15, 2007
- Record last updated
- Nov 22, 2024
- Fax
- (866) 954-5804
- Medicaid ID
- 036121625 IL
- Medicare enrollment
- Enrolled (PECOS I20090605000474); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 572 in Illinois → Look up another NPI →
Also registered at 1272 American Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mussie Beraki, M.D.Nephrology Physician1679898969
- Carmela Iovane-Mock, NURSE PRACTITIONERFamily Nurse Practitioner1467255182
- Jawad Munir, M.DNephrology Physician1851433429
- Lisa Rodriguez, APRNGerontology Nurse Practitioner1588503312
- Joshua Trob, M.D.Nephrology Physician1548217144
- Anca Zegrean, M.D.Nephrology Physician1508009416
Verify Maria S. Khan 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 036121625Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average nephrology physician in 2024
1,195 Medicare Part D claims for 238 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Allopurinol123 claims
- Furosemide101 claims
- Carvedilol77 claims
- Amlodipine Besylate68 claims
- Losartan Potassium65 claims
- Lisinopril54 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: $1,080.33
39 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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
- Associates IN Nephrology SCLibertyville, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maria S. Khan among 572 nephrology physician records in Illinois
Maria S. Khan, M.D. is one of 572 nephrology physician records with a practice address in Illinois. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 43% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2002 · median 2002 among the 433 with a school on file
- Record last updated2024 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Illinois
There are 572 nephrology physician records in Illinois.
All 572 in Illinois → Every provider in Libertyville → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Mussie Beraki, M.D.Libertyville, IL 600481679898969
- Omar Dalloul, M.D.Libertyville, IL 600481336197367
- George Hvostik, MDLibertyville, IL 600481023015021
- Jawad Munir, M.DLibertyville, IL 600481851433429
- Joshua Trob, M.D.Libertyville, IL 600481548217144
- Anca Zegrean, M.D.Libertyville, IL 600481508009416
- Mohammad Saleh, MDMcHenry, IL 600501164582532
- Veronica Zamora-Olivencia, MDLake Forest, IL 600451689105181
Common questions
What is Maria S. Khan, M.D.'s NPI number?
Maria S. Khan, M.D.'s National Provider Identifier (NPI) is 1548476773, issued on May 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Maria S. Khan, M.D. located?
The NPPES record lists a practice address at 1272 American Way, Libertyville, IL, 60048. Phone: (847) 549-7222. Providers update this record themselves, so call before visiting.
How can I verify Maria S. Khan, M.D.'s license?
NPPES lists Illinois license number 036121625, 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 Maria S. Khan, M.D. prescribe under Medicare Part D?
In 2024, Maria S. Khan, M.D. had 1,195 Medicare Part D claims for 238 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.