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OMAR A SIDDIQUI M.D.
NPI 1306287214
Internal Medicine - Critical Care Medicine in Oak Lawn, IL

Active since July 09, 2013PECOS EnrolledAccepts Medicare Assignment
4440 W 95TH ST STE AIP, OAK LAWN, IL 60453(708) 684-5094 Get Directions Write a Review

NPPES record last updated: March 15, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 10, 2019, Sep 24, 2018 (2 updates tracked since 2018).

About Omar A Siddiqui M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

OMAR A SIDDIQUI M.D. (NPI 1306287214) is an individual critical care medicine provider in Oak Lawn, Illinois, licensed in Illinois (036139801) and active in the NPI registry since July 2013. He is enrolled in Medicare PECOS, is affiliated with Presence St Marys Hospital, and maintains a secondary practice location in Washington.

NPPES Registry Identity

NPI1306287214
Entity TypeIndividualMale
Primary Taxonomy207RC0200X
Provider Legal NameOMAR A SIDDIQUICredential: M.D.
Location Address4440 W 95TH ST STE AIPOak Lawn, IL 60453-2600
Mailing Address4440 W 95th St Ste AipOak Lawn, IL 60453-2600 · (708) 684-5094
Phone(708) 684-5094
Sole ProprietorYes
Medical School CMSOtherGraduated 2013
Enumeration DateJuly 9, 2013
Last NPPES UpdateMarch 15, 20242 updates tracked since enumeration
NPPES CertifiedMarch 15, 2024
✔ NPI 1306287214 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RC0200X
Licenses✔ Licensed in IL · 036139801✔ Licensed in DC · MD045629✔ Licensed in AZ · 72320✔ Licensed in MN · 75833✔ Licensed in WI · 3842-320
Definition
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedInternal MedicineTaxonomy 207R00000X · License 125064227 (IL)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License MD045269 (DC)
4440 W 95TH ST STE AIP, Oak Lawn, IL 60453
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Secondary Practice Location 1

Location 12150 Pennsylvania Ave NWWashington, DC 20037-3201 · Phone (202) 741-3000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Omar A Siddiqui M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID648563569
PECOS Enrollment IDI20160729000056
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Omar Siddiqui reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cep America Illinois Intensivists
13 mi
Critical Care Medicine
2233 W DIVISION ST
Chicago, IL 60622
  • Reassigned Medicare billing, Illinois enrollment
  • 99 clinicians in this Medicare group
NPI 1871071837 (312) 770-2000
Critical Care Physicians Of Illinois LLC
28 mi
Critical Care Medicine
2000 OGDEN AVE
Aurora, IL 60504
  • Reassigned Medicare billing, Illinois enrollment
  • 96 clinicians in this Medicare group
NPI 1508134966 (847) 618-1000
Rural Physicians Group-Pannu PLLC
912 mi
Hospitalist
5575 DTC PKWY STE 225
Greenwood Village, CO 80111
  • Reassigned Medicare billing, Wisconsin enrollment
  • 64 clinicians in this Medicare group
NPI 1891236584 (303) 390-1924

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
236 services99 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
61 services43 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Presence St Marys Hospital

Acute Care Hospitals · Kankakee, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140155
Location500 W Court StKankakee, IL 60901 · Kankakee County
Emergency services Birthing friendly

Presence Saints Mary And Elizabeth Medical Center

Acute Care Hospitals · Chicago, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140180
Location2233 W Division StChicago, IL 60622 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60453 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. DANIEL MARCOS GONZALEZ MD
Internal Medicine (Critical Care Medicine)
4440 W 95TH ST STE AIP
OAK LAWN, IL 60453
Cook County (800) 655-2656
DR. ARAVIND KUMAR BOMMIASAMY M.D.
Internal Medicine (Critical Care Medicine)
4440 W 95TH ST STE AIP
OAK LAWN, IL 60453
Cook County (708) 283-5500
DR. WILLIAM DANIEL YOUNG MD
Anesthesiology (Critical Care Medicine)
4440 W 95TH ST STE AIP
OAK LAWN, IL 60453
Cook County (219) 677-7866
LAUREN BECKER MD
Internal Medicine (Critical Care Medicine)
4440 W 95TH ST STE AIP
OAK LAWN, IL 60453
Cook County (708) 283-5500
ADAM LAWRENCE ZACK
Internal Medicine (Critical Care Medicine)
4440 W 95TH ST STE AIP
OAK LAWN, IL 60453
Cook County (708) 283-5500
NATASHA ROCHON
Nurse Practitioner (Critical Care Medicine)
4440 W 95TH ST STE AIP
OAK LAWN, IL 60453
Cook County (708) 283-5500

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Omar Siddiqui's NPI number?

The NPI number for Omar Siddiqui is 1306287214. It was assigned to this individual provider in the NPPES registry on July 9, 2013.

Where is Omar Siddiqui located?

Omar Siddiqui practices at 4440 W 95th St Ste Aip, Oak Lawn, IL 60453. The listed phone number is (708) 684-5094.

What is Omar Siddiqui's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Is Omar Siddiqui enrolled in Medicare?

Yes. Omar Siddiqui is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Omar Siddiqui's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Omar Siddiqui reassigns Medicare benefits to 3 organizations: Cep America Illinois Intensivists (Chicago, IL), Critical Care Physicians Of Illinois LLC (Aurora, IL) and Rural Physicians Group-Pannu PLLC (Greenwood Village, CO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Omar Siddiqui's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Omar Siddiqui affiliated with any hospitals?

According to CMS data, Omar Siddiqui is affiliated with Presence St Marys Hospital and Presence Saints Mary And Elizabeth Medical Center.

When was this NPI record last updated?

The NPPES record for Omar Siddiqui was last updated on March 15, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.