Doctor profile · Federal record

Dr. Mohammed Kassem, M.D

Internal Medicine Physician (CMS: Hematology/Oncology) · Chicago, IL

  • NPI 1023053808
  • Accepts Medicare
  • MIPS 71.4 / 100 · 2023
  • 28 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1501 S California Ave, Mt Sinai Hospital, Cancer Care Center
Chicago, IL 606081732
(773) 257-6120
Mailing address
1500 S California Av, Mt Sinai Hospital , Cancer Care Center, 6Th Floor
Chicago, IL 606089025

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
December 28, 2015
Year of graduation
1998 — 28 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Illinois #036-112270

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1023053808. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
387
Distinct HCPCS
10
Medicare allowed
$48,679
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 59 43 $135
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 46 28 $84
99215 Established patient office or other outpatient visit, 40-54 minutes 45 25 $188
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 45 23 $126
G0179 Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a 35 20 $44
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 33 31 $183
99215 Established patient office or other outpatient visit, 40-54 minutes 32 20 $151
99213 Established patient office or other outpatient visit, 20-29 minutes 28 27 $95
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and 20 18 $55
99214 Established patient office or other outpatient visit, 30-39 minutes 19 19 $100

In context: peer comparison

Among 487 peers in Chicago Internal Medicine Physician, average services per provider: 168. This provider delivers 2.3× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$1,891
Transactions
61
Manufacturers
15
Payer (manufacturer) Industry Txns Amount
AstraZeneca Pharmaceuticals Lp 13 $366.79
Merck Sharp & Dohme LLC 6 $152.05
Regeneron Healthcare Solutions, INC. 2 $129.16
Pfizer INC. 5 $123.66
Servier Pharmaceuticals LLC 5 $95.76
Takeda Pharmaceuticals U.S.A., INC. 4 $94.86
Celgene Corporation 4 $90.83
Novartis Pharmaceuticals Corporation 3 $85.49
E.R. Squibb & Sons, L.L.C. 4 $74.08
Tempus Ai, INC 3 $71.53
Lilly USA, LLC 3 $71.31
Amgen INC. 3 $55.33
Janssen Biotech, INC. 2 $53.30
Daiichi Sankyo INC. 2 $50.85
Array Biopharma INC 2 $45.59

By nature of payment

Food and Beverage
$1,891

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
370
Patients
38
Total drug cost
$1,068,119
Drug Type Claims Patients Total cost
Prednisone Generic 55 0 $379
Abiraterone Acetate Generic 52 0 $172,188
Anastrozole Generic 48 13 $1,155
Dexamethasone Generic 40 0 $230
Hydroxyurea Generic 22 0 $632
Gabapentin Generic 20 11 $340
Prochlorperazine Maleate Generic 20 14 $310
Mirtazapine Generic 19 0 $174
Deferasirox Generic 18 0 $21,046
Levothyroxine Sodium Generic 15 0 $113

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Mohammed Kassem's medical specialty?
Dr. Mohammed Kassem practices Internal Medicine Physician in Chicago, IL.
Where does Dr. Mohammed Kassem practice?
Dr. Mohammed Kassem practices at 1501 S California Ave, Chicago, IL 606081732. Office phone: 7732576120.
What is Dr. Mohammed Kassem's NPI?
Dr. Mohammed Kassem's National Provider Identifier (NPI) is 1023053808, issued by NPPES.
Does Dr. Mohammed Kassem accept Medicare assignment?
Yes. Dr. Mohammed Kassem accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mohammed Kassem commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.