Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Irfan Hasan Siddiqui, MD

Individual provider Internal Medicine Physician · NPI 1023404795

Dr. Irfan Hasan Siddiqui, MD practises Internal Medicine in Oak Lawn, Illinois. Qualified in 2011, 15 years ago. Practices with Advocate Health and Hospitals Corporation, a 3,079-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
15
Licensed in
IL
In the registry since
2015
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4220 W 95th St Ste 200
Oak Lawn, IL 60453-3072
Phone: (312) 731-6329
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4440 W 95th St, Oak Lawn, IL 60453-2600 — (708) 684-4393

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036.146952 (IL)

Record details

NPI number1023404795
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 9, 2015
Last updated in NPPESDecember 16, 2021
Certification dateDecember 16, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Advocate Health And Hospitals Corporation — 3079 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients296
Services billed 731 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Advocate Christ Hospital & Medical Center Hospital · Oak Lawn, IL · listed as Advocate Christ Medical Center
  • Advocate Trinity Hospital Hospital · Chicago, IL
  • Advocate Home Health Care Serv Home health agency · Oakbrook, IL
  • Advocate Hospice Hospice · Oak Brook, IL

Colleagues at Advocate Health and Hospitals Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3079 clinicians in the practice; 12 are shown here.

Other providers in Oak Lawn