Sarah Nazeer Siddiqui, D.O.
Internal Medicine Physician · La Grange Highlands, IL
Sarah Nazeer Siddiqui, D.O. is an internal medicine physician with a practice address in La Grange Highlands, Illinois, and NPI 1982847026, issued on Apr 17, 2009. Check the license (Illinois 036.124438, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Sarah Nazeer Siddiqui
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036.124438 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5201 Willow Springs RD Ste 160, La Grange Highlands, IL 60525
- Phone
- (708) 245-8120
- Enumerated
- Apr 17, 2009
- Record last updated
- Mar 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20101112001000); accepts Medicare assignment
- Medical or professional school
- Ohio University, College Of Osteopathic Medicine, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 5201 Willow Springs RD Ste 160
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tumendemberel Byambaa, MDFamily Medicine Physician1306322664
- Saba Osmani, MDFamily Medicine Physician1447539622
Verify Sarah Nazeer Siddiqui 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 036.124438Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% more Medicare Part D claims than the average internal medicine physician in 2024
4,699 Medicare Part D claims for 301 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 144 claims were for opioids.
Most prescribed
- Atorvastatin Calcium334 claims
- Amlodipine Besylate203 claims
- Levothyroxine Sodium161 claims
- Rosuvastatin Calcium159 claims
- Lisinopril125 claims
- Losartan Potassium111 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: $23.21
1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Adventist Health Partners, Inc.Bolingbrook, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sarah Nazeer Siddiqui among 7,238 internal medicine physician records in Illinois
Sarah Nazeer Siddiqui, D.O. is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 49% of them.
- NPI issued2009 · 49% of these records are older, 49% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2006 · median 2003 among the 3,580 with a school on file
- Record last updated2021 · 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 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 internal medicine physician records list a practice address in La Grange Highlands
They are 2 of the 85 NPPES records with a practice address in La Grange Highlands, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in La Grange Highlands → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kisti Catalano, M.D.La Grange, IL 605251710015664
- Nasreen Hamidani, M.D.La Grange Highlands, IL 605251851483812
- Andrea Krasinski, MDLa Grange, IL 605251194874248
- Ronald McQuigg, MDLa Grange, IL 605251326241514
- Robert Passovoy, MDLa Grange, IL 605251841229408
- Jason Rice, M.D.La Grange, IL 605251093036931
- Haissam Sabbagh, MDLa Grange, IL 605251194836924
- Gerald Simon, MDCountryside, IL 605251861450330
Common questions
What is Sarah Nazeer Siddiqui, D.O.'s NPI number?
Sarah Nazeer Siddiqui, D.O.'s National Provider Identifier (NPI) is 1982847026, issued on Apr 17, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Sarah Nazeer Siddiqui, D.O. located?
The NPPES record lists a practice address at 5201 Willow Springs RD Ste 160, La Grange Highlands, IL, 60525. Phone: (708) 245-8120. Providers update this record themselves, so call before visiting.
How can I verify Sarah Nazeer Siddiqui, D.O.'s license?
NPPES lists Illinois license number 036.124438, 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 Sarah Nazeer Siddiqui, D.O. prescribe under Medicare Part D?
In 2024, Sarah Nazeer Siddiqui, D.O. had 4,699 Medicare Part D claims for 301 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.