Dr. Patrick E. Hallak, M.D
Nephrology (Kidney) (Nephrology Physician)
251 E Huron St
Chicago, IL 60611
Who else practices at this address →
Cook County includes primary care (3% of residents) and mental health (4% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- In the NPI registry since
- 2008
- Medicare patients seen, 2024
- 52
Licensed in Illinois since 2009, according to the Illinois Department of Financial and Professional Regulation. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2008Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Nephrology Physician primary
IL license 036123751 (first issued 2009; active)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Medicare patients and services
- Medicare patients, 2024
- 52
- Services billed
- 166
- Patients’ average age
- 57
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 20-29 minutes | 251 | 143 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 233 | 67 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 49 | 47 |
| Established patient office or other outpatient visit, 30-39 minutes | 17 | 17 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Prednisone Other prescribers in Chicago, IL | 13 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 1 companies reported 1 payments worth $168 in total to this clinician.
| Microtransponder, Inc. | $168 |
|---|
| Food and Beverage | $168 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.