Doctor profile · Federal record

Dr. Hatem Hassaballa

Internal Medicine Physician (CMS: Internal Medicine) · Hospitalist Physician · Chicago, IL

  • NPI 1699174540
  • Accepts Medicare
  • 18 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

Operates at 4 locations .

NPPES Updated May 11, 2026
Primary practice
5841 S Maryland Ave
Chicago, IL 606371443
(773) 702-5211
fax (773) 702-8875
Additional location
20201 Crawford Ave
Olympia Fields, IL 604611010
(708) 855-7297
fax (708) 679-2161
Additional location
800 Biesterfield RD
Elk Grove Village, IL 600073361
(224) 273-3152
Show 1 more location
Additional location
840 S Wood St Fl 4, Suite 409 (M/C 717)
Chicago, IL 606124325
(312) 996-7704
fax (312) 996-8637
Mailing address
180 Harvester Dr Ste 110
Burr Ridge, IL 605276686

Credentials & registration

NPPES · NUCC
NPI registered
August 2014 — 12 yrs on file
Profile last updated
April 30, 2024
Year of graduation
2008 — 18 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Illinois #036144048

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1699174540. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
500
Distinct HCPCS
5
Medicare allowed
$84,979
HCPCS Description Services Patients Avg allowed
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 355 335 $176
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 92 92 $135
99291 Critical care, first 30-74 minutes 28 28 $211
99285 Emergency department visit with high level of medical decision making 13 13 $190
99284 Emergency department visit with moderate level of medical decision making 12 12 $129

In context: peer comparison

Among 487 peers in Chicago Internal Medicine Physician, average services per provider: 168. This provider delivers 3.0× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$107,270
Transactions
3
Manufacturers
3
Payer (manufacturer) Industry Txns Amount
Pfizer INC. 1 $107,111.00
Alnylam Pharmaceuticals INC. 1 $125.00
Novo Nordisk INC 1 $34.48

By nature of payment

Grant
$107,111
Food and Beverage
$159

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Hatem Hassaballa's medical specialty?
Dr. Hatem Hassaballa practices Internal Medicine Physician in Chicago, IL.
Where does Dr. Hatem Hassaballa practice?
Dr. Hatem Hassaballa practices at 5841 S Maryland Ave, Chicago, IL 606371443. Office phone: 7737025211.
What is Dr. Hatem Hassaballa's NPI?
Dr. Hatem Hassaballa's National Provider Identifier (NPI) is 1699174540, issued by NPPES.
Does Dr. Hatem Hassaballa accept Medicare assignment?
Yes. Dr. Hatem Hassaballa accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Hatem Hassaballa commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with moderate level of medical decision making (HCPCS 99223); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.