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CONSTANTINE GEOR DELIS DO
NPI 1003892043
Internal Medicine - Nephrology in Melrose Park, IL

Active since December 21, 2005PECOS EnrolledAccepts Medicare Assignment
675 W NORTH AVE STE 209, MELROSE PARK, IL 60160(312) 654-2744(708) 338-1790 Get Directions Write a Review

NPPES record last updated: July 28, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 22, 2024, Dec 21, 2021 (2 updates tracked since 2021).

About Constantine Geor Delis Do NPPES

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

CONSTANTINE GEOR DELIS DO (NPI 1003892043) is an individual nephrology provider in Melrose Park, Illinois, licensed in Illinois (036092711) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with Loyola Gottlieb Memorial Hospital, and is a graduate of Chicago College Of Osteopathy (1993).

NPPES Registry Identity

NPI1003892043
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameCONSTANTINE GEOR DELISCredential: DO
Location Address675 W NORTH AVE STE 209Melrose Park, IL 60160-1630
Mailing Address210 S Desplaines StChicago, IL 60661-5500 · (312) 654-2700 · Fax (312) 654-9930
Phone(312) 654-2744
Fax(708) 338-1790
Sole ProprietorNo
Medical School CMSChicago College Of OsteopathyGraduated 1993
Enumeration DateDecember 21, 2005
Last NPPES UpdateJuly 28, 20252 updates tracked since enumeration
NPPES CertifiedJuly 28, 2025
✔ NPI 1003892043 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in IL · 036092711
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
675 W NORTH AVE STE 209, Melrose Park, IL 60160
Open in Google Maps ↗

Other Identifiers 3

Medicaid036092711IL
Other01615184IL · Bcbs
Other01621679IL · Bcbs Of Il

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Anthem Blue Cross and Blue Shield and more.Insurance ›

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

Constantine Geor Delis Do 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 ID5991609687
PECOS Enrollment IDI20040203000514
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 Reassignment

Medicare enrollment records show Constantine Delis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Associates In Nephrology, S.C.
10 mi
Nephrology
210 S DESPLAINES ST
Chicago, IL 60661
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Associates In Nephrology Sc
  • 55 clinicians in this Medicare group
NPI 1184694259 (312) 654-2721

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 8

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
682 services129 patients
Dialysis services, 4 or more physician visits per month (20 years or older) 90960
Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.
205 services32 patients
Hemodialysis procedure with physician evaluation 90935
Hemodialysis is a treatment that uses a machine to filter waste and excess fluid from your blood when your kidneys can't. A physician checks your health before, during, and after the procedure to ensure it's working effectively for you.
198 services46 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.
190 services74 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
67 services65 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
65 services28 patients

Hospital Affiliations CMS Care Compare 4

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

Community First Medical Center

Acute Care Hospitals · Chicago, IL
1/5 CMS rating
OwnershipProprietary
CMS Certification Number140251
Location5645 W Addison StreetChicago, IL 60634 · Cook County
Emergency services

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

Advocate Good Samaritan Hospital

Acute Care Hospitals · Downers Grove, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140288
Location3815 Highland AvenueDowners Grove, IL 60515 · Du Page County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60160 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 Constantine Delis's NPI number?

The NPI number for Constantine Delis is 1003892043. It was assigned to this individual provider in the NPPES registry on December 21, 2005.

Where is Constantine Delis located?

Constantine Delis practices at 675 W North Ave Ste 209, Melrose Park, IL 60160. The listed phone number is (312) 654-2744.

What is Constantine Delis's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Constantine Delis enrolled in Medicare?

Yes. Constantine Delis 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 organization bills Medicare for Constantine Delis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Constantine Delis reassigns Medicare benefits to Associates In Nephrology, S.C. (Chicago, IL). The 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 Constantine Delis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Constantine Delis accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Anthem Blue Cross and Blue Shield and Oscar Health list Constantine Delis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Constantine Delis affiliated with any hospitals?

According to CMS data, Constantine Delis is affiliated with Loyola Gottlieb Memorial Hospital, Community First Medical Center, Loyola University Medical Center and Advocate Good Samaritan Hospital.

When was this NPI record last updated?

The NPPES record for Constantine Delis was last updated on July 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.