Mohammed S. Siddiqui, MD
Geriatric Psychiatry Physician · Lombard, IL
Mohammed S. Siddiqui, MD is a geriatric psychiatry physician with a practice address in Lombard, Illinois, and NPI 1639456122, issued on Nov 10, 2011. Check the license (Illinois 036-131386, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mohammed S. Siddiqui
- Credential
- MD
- Primary taxonomy
- Geriatric Psychiatry Physician 2084P0805X
- License number
- 036-131386 IL
Self-reported in NPPES; status is on the state search - Practice location
- 477 E Butterfield RD Ste 102, Lombard, IL 60148
- Phone
- (630) 528-3835
- Enumerated
- Nov 10, 2011
- Record last updated
- Nov 20, 2025
- Fax
- (630) 528-3837
- Medicaid ID
- 036131386 IL
- Medicare enrollment
- Enrolled (PECOS I20130417000630); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest geriatric psychiatry physician records → All 17 in Illinois → Look up another NPI →
Also registered at 477 E Butterfield RD Ste 102
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Chelsea CooperClinical Psychologist1700543519
- Carol Crews, LCSWClinical Social Worker1508108036
- Randall Summerville, PSYDClinical Psychologist1821180803
Verify Mohammed S. 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 036-131386Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average geriatric psychiatry physician in 2024
1,312 Medicare Part D claims for 161 beneficiaries, against an average of 1,485 among the 473 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Quetiapine Fumarate82 claims
- Donepezil Hcl77 claims
- Sertraline Hcl76 claims
- Venlafaxine Hcl Er72 claims
- Risperidone67 claims
- Escitalopram Oxalate58 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.
Bills Medicare through 2 group practices
- Ottawa Regional Hospital And Healthcare CenterOttawa, IL
- Rush University Medical GroupChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mohammed S. Siddiqui among 17 geriatric psychiatry physician records in Illinois
Mohammed S. Siddiqui, MD is one of 17 geriatric psychiatry physician records with a practice address in Illinois. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 76% of them.
- NPI issued2011 · 76% of these records are older, 18% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 41% of these records are
- Record last updated2025 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0805X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Psychiatry Physician providers in Illinois
There are 17 geriatric psychiatry physician records in Illinois.
All 17 in Illinois → Every provider in Lombard → Geriatric Psychiatry Physician nationwide →
The 8 geriatric psychiatry physician records with the nearest ZIP codes
- Loveleen Khehra, MDMaywood, IL 601531447749411
- Pauline Wiener, M.D.Carol Stream, IL 601881073680187
- Chris D'Agostino, DOHoffman Estates, IL 601941568494987
- Karen Kreiner, MDWoodstock, IL 600981962500140
- Sanford Finkel, M.D.Wilmette, IL 600911730245812
- Demetrius Trakas, M.D.Wilmette, IL 600911679922447
- Amanda Weiss, M. D.North Chicago, IL 600641851409288
- Mehrdad Abbassian, M.D.Westmont, IL 605591871527846
Common questions
What is Mohammed S. Siddiqui, MD's NPI number?
Mohammed S. Siddiqui, MD's National Provider Identifier (NPI) is 1639456122, issued on Nov 10, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Mohammed S. Siddiqui, MD located?
The NPPES record lists a practice address at 477 E Butterfield RD Ste 102, Lombard, IL, 60148. Phone: (630) 528-3835. Providers update this record themselves, so call before visiting.
How can I verify Mohammed S. Siddiqui, MD's license?
NPPES lists Illinois license number 036-131386, 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 Mohammed S. Siddiqui, MD prescribe under Medicare Part D?
In 2024, Mohammed S. Siddiqui, MD had 1,312 Medicare Part D claims for 161 beneficiaries; the average among geriatric psychiatry physician prescribers was 1,485. 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.