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DR. DARIUS BARTKUS M.D.
NPI 1093836629
Internal Medicine in Chicago, IL

Active since April 02, 2007PECOS EnrolledAccepts Medicare Assignment
2113 W MCLEAN AVE, CHICAGO, IL 60647(773) 384-1103(773) 384-1103 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Darius Bartkus M.d. NPPES

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

DR. DARIUS BARTKUS M.D. (NPI 1093836629) is an individual internal medicine provider in Chicago, Illinois and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS, is affiliated with Loyola Gottlieb Memorial Hospital, and is a graduate of Loyola University Of Chicago, Stritch School Of Medicine (1996).

NPPES Registry Identity

NPI1093836629
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. DARIUS BARTKUSCredential: M.D.
Location Address2113 W MCLEAN AVEChicago, IL 60647-4524
Mailing Address2113 W Mclean AveChicago, IL 60647-4524 · (773) 384-1103 · Fax (773) 384-1103
Phone(773) 384-1103
Fax(773) 384-1103
Sole ProprietorYes
Medical School CMSLoyola University Of Chicago, Stritch School Of MedicineGraduated 1996
Enumeration DateApril 2, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1093836629 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
2113 W MCLEAN AVE, Chicago, IL 60647
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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

Dr. Darius Bartkus 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 ID5496849036
PECOS Enrollment IDI20070913000438
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

2

Medicare enrollment records show Darius Bartkus reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Loyola Medical Group LLC
8.3 mi
General Practice
3249 OAK PARK AVE
Berwyn, IL 60402
  • Reassigned Medicare billing, Illinois enrollment
  • 211 clinicians in this Medicare group
NPI 1376041954 (708) 783-3125
Loyola University Medical Center
8.9 mi
General Practice
2160 S 1ST AVE
Maywood, IL 60153
  • Reassigned Medicare billing, Illinois enrollment
  • 1,138 clinicians in this Medicare group
NPI 1336159961 (708) 216-3215

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 5

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.
49 services48 patients
Insertion of artery tube for blood sampling or infusion through skin 36620
This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.
28 services26 patients
Ultrasonic guidance for blood vessel access 76937
Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.
24 services22 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
21 services21 patients
Insertion of non-tunneled central venous tube for infusion (5 years or older) 36556
This procedure involves placing a thin tube into a large vein, usually in the neck or chest, to administer medication or fluids. It's done under local anesthesia to minimize discomfort. It's a standard, safe procedure for individuals aged 5 and above.
12 services11 patients

Hospital Affiliations CMS Care Compare 3

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

Loyola Gottlieb Memorial Hospital

Acute Care Hospitals · Melrose Park, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140008
Location701 West North AveMelrose Park, IL 60160 · Cook County
Emergency services

Macneal Hospital

Acute Care Hospitals · Berwyn, IL
2/5 CMS rating
OwnershipProprietary
CMS Certification Number140054
Location3249 South Oak Park AvenueBerwyn, IL 60402 · Cook County
Emergency services Birthing friendly

Loyola University Medical Center

Acute Care Hospitals · Maywood, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140276
Location2160 S 1st AvenueMaywood, IL 60153 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60647 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.

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 Darius Bartkus's NPI number?

The NPI number for Darius Bartkus is 1093836629. It was assigned to this individual provider in the NPPES registry on April 2, 2007.

Where is Darius Bartkus located?

Darius Bartkus practices at 2113 W Mclean Ave, Chicago, IL 60647. The listed phone number is (773) 384-1103.

What is Darius Bartkus's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Darius Bartkus enrolled in Medicare?

Yes. Darius Bartkus 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 Darius Bartkus's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Darius Bartkus reassigns Medicare benefits to 2 organizations: Loyola Medical Group LLC (Berwyn, IL) and Loyola University Medical Center (Maywood, IL). 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 Darius Bartkus's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Darius Bartkus affiliated with any hospitals?

According to CMS data, Darius Bartkus is affiliated with Loyola Gottlieb Memorial Hospital, Macneal Hospital and Loyola University Medical Center.

When was this NPI record last updated?

The NPPES record for Darius Bartkus was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.