Doctor profile · Federal record

Dr. Mehrdad Abbassian, M.D.

Geriatric Psychiatry Physician · Westmont, IL

  • NPI 1871527846
  • MIPS 0.0 / 100 · 2023
  • 20 yrs on file
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
540 Oakmont Ln
Westmont, IL 605593700
(630) 321-1115
fax (630) 321-1116
Mailing address
Po Box 869
La Grange, IL 605250869

Credentials & registration

NPPES · NUCC
NPI registered
July 2006 — 20 yrs on file
Profile last updated
October 12, 2015
Specialty taxonomy
2084P0805X — NUCC code
State license (1)
Illinois #036-076165

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1871527846. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,945
Distinct HCPCS
4
Medicare allowed
$202,236
HCPCS Description Services Patients Avg allowed
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes 956 210 $78
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 703 153 $111
99306 Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes 260 249 $189
99307 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes 26 18 $41

In context: peer comparison

Among 1 peers in Westmont Geriatric Psychiatry Physician, average services per provider: 486. This provider delivers 4.0× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$174
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Stryker Corporation 1 $173.99

By nature of payment

Food and Beverage
$174

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,508
Patients
232
Total drug cost
$24,999
Drug Type Claims Patients Total cost
Quetiapine Fumarate Generic 316 44 $5,801
Risperidone Generic 202 33 $2,713
Escitalopram Oxalate Generic 196 39 $2,565
Sertraline Hcl Generic 150 22 $1,854
Mirtazapine Generic 130 22 $2,577
Donepezil Hcl Generic 124 18 $1,591
Olanzapine Generic 97 14 $1,473
Memantine Hcl Generic 64 11 $2,769
Trazodone Hcl Generic 51 15 $540
Alprazolam Generic 37 14 $598

Frequently asked questions

Auto-generated from federal data
What is Dr. Mehrdad Abbassian's medical specialty?
Dr. Mehrdad Abbassian practices Geriatric Psychiatry Physician in Westmont, IL.
Where does Dr. Mehrdad Abbassian practice?
Dr. Mehrdad Abbassian practices at 540 Oakmont Ln, Westmont, IL 605593700. Office phone: 6303211115.
What is Dr. Mehrdad Abbassian's NPI?
Dr. Mehrdad Abbassian's National Provider Identifier (NPI) is 1871527846, issued by NPPES.
What procedures does Dr. Mehrdad Abbassian commonly perform?
Top Medicare-reported procedures in 2023: Subsequent nursing facility care with straightforward level of medical decision making (HCPCS 99308); Subsequent nursing facility care with moderate level of medical decision making (HCPCS 99309); Initial nursing facility care with high level of medical decision making (HCPCS 99306). Source: CMS Medicare Physician & Other Practitioners file.