Medicare Enrolled

Hatem Hassaballa

Hospitalist Physician · Chicago, IL
Practice pattern: Mixed Practice — Diverse clinical practice across multiple procedure types
5841 S MARYLAND AVE, Chicago, IL 60637
7737025211
Registered in NPPES since 2014
NPI: 1699174540 verify on NPPES ↗
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating. This page presents federal public records about Hassaballa from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Hassaballa

Hatem Hassaballa is a hospitalist physician in Chicago, IL, with 12 years of NPI registration. Based on federal Medicare data, Hassaballa performed 500 Medicare services in 2023. These records do not provide a deduplicated patient total.

Between the years covered by Open Payments, Hassaballa received a total of $107,365 from 4 pharmaceutical and/or device companies across 7 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.

The Data Coverage level for Hassaballa is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.

✓ 12 years of NPI registration ▲ 500 Medicare services $107,365 industry payments

Medicare Practice Summary — 2023

Medicare Utilization ↗
500
Medicare services
Bottom 44% in IL for hospitalist physician
Not available
Unique patients (not deduplicated)
$128
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →

Top procedures by volume

Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.

Procedure Volume Avg. paid Avg. submitted
Initial hospital admission, high complexity
Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter.
355 $132 $1,031
Initial hospital admission, moderate complexity
Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter.
92 $103 $463
Critical care, first 30-74 min
Emergency medical care for a critically ill or injured patient lasting between 30 and 74 minutes. This service involves direct patient care and medical decision making to stabilize the patient.
28 $168 $1,480
Emergency department visit, high complexity
An emergency department visit involving a high level of medical decision making.
13 $124 $317
Emergency department visit, moderate complexity
An emergency department visit for an established or new patient involving a moderate level of medical decision making.
12 $97 $310
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.

Industry Payment Transparency

Open Payments through 2024 ↗
$107,365
Total received (2018-2024)
Avg $35,788/year across 3 years
Top 0% in IL for hospitalist physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
4
Companies
7
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →

Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2024
$107,270
2023
$43
2018
$51

Payments by company (2024)

PFIZER INC.
$107,111
Alnylam Pharmaceuticals Inc.
$125
Novo Nordisk Inc
$34
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2018-2024) ›
PFIZER INC.
$107,154
Alnylam Pharmaceuticals Inc.
$125
Allergan Inc.
$51
Novo Nordisk Inc
$34
Top 3 companies account for 100.0% of all-time payments
Associated products mentioned in payments ›
AMVUTTRA · AVYCAZ · VYNDAMAX
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Looking for a hospitalist physician in Chicago?
Compare hospitalist physicians in the Chicago area by procedure volume, costs, and industry payment transparency.
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Geographic Context

Hospitalist physicians in nearby ZIP areas
433
County median income
$81,797
Nearest hospital to ZIP centroid (approximate)
THE UNIVERSITY OF CHICAGO MEDICAL CENTER
0.0 mi

Data Sources

Provider Registry NPPES NPPES snapshot; verify current record
Medicare Enrollment PECOS PECOS snapshot
Practice Data Medicare Util. Annual (CY lag)
Industry Payments Open Payments CY 2024
Disciplinary History — Not included N/A

This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →

Summary

Hassaballa is a mixed practice specialist, with moderate Medicare volume.

This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →

Frequently Asked Questions

Is Hassaballa experienced with initial hospital admission, high complexity?
Based on Medicare claims data, Hassaballa performed 355 initial hospital admission, high complexity services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Hassaballa receive payments from pharmaceutical companies?
Yes. Hassaballa received a total of $107,365 from 4 companies across 7 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Hassaballa's costs compare to other hospitalist physicians in Chicago?
Hassaballa's average Medicare payment per service is $128. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Hassaballa) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
About this page

This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.

This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.

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Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Industry payment disclosure alone establishes neither wrongdoing nor legality. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →