Mehrdad Abbassian, M.D.
Geriatric Psychiatry Physician · Westmont, IL
Mehrdad Abbassian, M.D. is a geriatric psychiatry physician with a practice address in Westmont, Illinois, and NPI 1871527846, issued on Jul 10, 2006. Check the license (Illinois 036-076165, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mehrdad Abbassian
- Credential
- M.D.
- Primary taxonomy
- Geriatric Psychiatry Physician 2084P0805X
- License number
- 036-076165 IL
Self-reported in NPPES; status is on the state search - Practice location
- 540 Oakmont LN, Westmont, IL 60559
- Phone
- (630) 321-1115
- Enumerated
- Jul 10, 2006
- Record last updated
- Oct 12, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (630) 321-1116
- Entity
- Type 1 · individual
8 nearest geriatric psychiatry physician records → All 17 in Illinois → Look up another NPI →
Verify Mehrdad Abbassian 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 036-076165Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average geriatric psychiatry physician in 2024
821 Medicare Part D claims for 90 beneficiaries, against an average of 1,485 among the 473 providers of this specialty who prescribed in Part D.
Most prescribed
- Quetiapine Fumarate156 claims
- Escitalopram Oxalate98 claims
- Donepezil Hcl75 claims
- Sertraline Hcl62 claims
- Mirtazapine59 claims
- Memantine Hcl51 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.
The MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $173.99
1 payment: food and beverage; the largest payer was Stryker Corporation. The 200 providers of this specialty with any payment received $2,189.26 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.
Mehrdad Abbassian among 17 geriatric psychiatry physician records in Illinois
Mehrdad Abbassian, M.D. 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 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 29% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 41% of these records are
- Record last updated2015 · 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 Westmont → Geriatric Psychiatry Physician nationwide →
The 8 geriatric psychiatry physician records with the nearest ZIP codes
- Rajeev Malhotra, M.D.Naperville, IL 605641194753491
- Pradeep Rattan, M.D.Chicago, IL 606081669460879
- Leonard Elkun, MDChicago, IL 606101023129145
- Chris D'Agostino, DOHoffman Estates, IL 601941568494987
- Pauline Wiener, M.D.Carol Stream, IL 601881073680187
- Loveleen Khehra, MDMaywood, IL 601531447749411
- Mohammed Siddiqui, MDLombard, IL 601481639456122
- Karen Kreiner, MDWoodstock, IL 600981962500140
Common questions
What is Mehrdad Abbassian, M.D.'s NPI number?
Mehrdad Abbassian, M.D.'s National Provider Identifier (NPI) is 1871527846, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mehrdad Abbassian, M.D. located?
The NPPES record lists a practice address at 540 Oakmont LN, Westmont, IL, 60559. Phone: (630) 321-1115. Providers update this record themselves, so call before visiting.
How can I verify Mehrdad Abbassian, M.D.'s license?
NPPES lists Illinois license number 036-076165, 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 Mehrdad Abbassian, M.D. prescribe under Medicare Part D?
In 2024, Mehrdad Abbassian, M.D. had 821 Medicare Part D claims for 90 beneficiaries; the average among geriatric psychiatry physician prescribers was 1,485. Part D covers Medicare prescriptions only.
What is Mehrdad Abbassian, M.D.'s MIPS final score?
The 2023 MIPS final score is 0 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.