Dr. Constantine Geor Delis, DO
- Medicare services, 2024
- 1,549
- Medicare patients, 2024
- 234
- Part D claims, 2024
- 572
- Hospital affiliations
- 4
- Industry payments
- $1,762
- Practice address
- 4600 Touhy Avenue, Lincolnwood, IL 60712
- Practice phone
- Call (847) 443-1228
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Concerto Renal Services - Lincolnwood
Dialysis Center - Independent · Lincolnwood, Illinois
Find Dr. Delis' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Constantine Geor Delis is a nephrologist in Lincolnwood, Illinois
Dr. Delis practices at Concerto Renal Services - Lincolnwood in Lincolnwood, Illinois.
Dr. Delis' NPI, 1003892043, was assigned on December 21, 2005. Dr. Delis graduated from Chicago College of Osteopathic Medicine at Midwestern University in 1993. Dr. Delis holds Illinois license 036092711.
- NPI
- 1003892043NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991609687
- NPI enumeration date
- December 21, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (847) 443-1228
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Constantine Geor Delis practices at Concerto Renal Services - Lincolnwood in Lincolnwood, Illinois
Dr. Delis' primary practice is Concerto Renal Services - Lincolnwood, at 4600 Touhy Avenue, Lincolnwood, IL 60712 in Cook County. The practice phone is (847) 443-1228.
- Concerto Renal Services - Lincolnwood4600 Touhy Avenue, Lincolnwood, IL 60712 · Cook CountyPhone(847) 443-1228
Source: Dmand AI Affiliation Data
Dr. Constantine Geor Delis is affiliated with 9 sites of care and 1 medical group
Dr. Delis' primary practice is Concerto Renal Services - Lincolnwood in Lincolnwood, Illinois. Dr. Delis is also affiliated with Loyola University Medical Center. The medical group on file is Associates in Nephrology. Dmand AI also links Dr. Delis to 3 more hospitals, 3 dialysis centers and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Constantine Geor Delis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Delis practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Concerto Renal Services - Lincolnwood | Available with a free account |
| +8 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Constantine Geor Delis is one of 534 nephrologists in Illinois
Nephrology is Dr. Delis' primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Delis is board certified in nephrology by the American Board of Internal Medicine. Dr. Delis is licensed in Illinois.
Specialties and state licenses
- Nephrology, IllinoisPrimary
Clinical focus
Dmand AI lists acute kidney failure, chronic kidney disease and fluid and electrolyte imbalances among the conditions Dr. Delis treats.
Nephrologists near Dr. Delis
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Constantine Geor Delis billed Medicare for 1,549 services in 2024
CMS data shows 1,549 Medicare services from Dr. Delis across 9 procedure codes in 2024, for 234 Medicare patients. Medicare paid $161,718 for them.
Dr. Delis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9382024: 1,03610%
- Tests and treatments
- 2023: 3522024: 44928%
- Other services
- 2023: 02024: 64
Where Dr. Delis' Medicare services took place, 2024
- In an office38025%
- In a facility1,16975%
Dr. Delis compared with the Illinois median for nephrologists, 2024
- Dr. Delis
- Illinois median
- Medicare services
- 1,549vs 1,28421% above
- Medicare patients
- 234vs 35734% below
- Part D claims
- 338vs 57842% below
Medians across 526 nephrologists in Illinois with Dmand AI profiles that report each measure.
Dr. Delis' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Delis?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Delis and other nephrologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Constantine Geor Delis treated 234 Medicare patients in 2024, average age 72
CMS counts 234 Medicare patients who saw Dr. Delis in 2024. The largest group is 65 to 74, with 72 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 56% are also on Medicaid. Their average risk score is 5.51, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Delis' median patient age at 67, with 44% women.
Dr. Delis' Medicare patients by age, 2024
Dr. Delis' Medicare patients by sex, 2024
- Women11047%
- Men12453%
Chronic conditions among Dr. Delis' Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Heart failure73%
- Diabetes71%
- Ischemic heart disease70%
- Arthritis50%
- Atrial fibrillation43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Delis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women44%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Constantine Geor Delis wrote 572 Medicare Part D claims in 2024
In 2024, Dr. Delis wrote 572 Medicare Part D claims for 113 patients. 84% of them were for generic drugs. CMS names the drug for 338 of them, across 15 drugs with 11 or more claims each, at $140,408 in total drug cost. In 2023, CMS named 126 claims across 5 drugs.
Dr. Delis' Part D claims by kind of drug, 2024
- Generic480 claims84%
- Brand-name92 claims16%
Dr. Delis' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Delis' Part D claims, 2024
- Antibiotics3%18 of 572 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1262024: 338168%
Drugs named by CMS: 15 in 2024, 5 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Constantine Geor Delis takes part in Medicare
Dr. Delis accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Constantine Geor Delis received $1,762 in industry payments from 2016 to 2025
CMS Open Payments shows 47 general payments to Dr. Delis from 13 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 91% of the total. Fresenius USA Marketing, Inc. paid the most, $368.
General payments to Dr. Delis by program year, 2016 to 2025
General payments to Dr. Delis by kind, 2016 to 2025
- Food and beverage$1,60791%
- Education$1549%
Companies that paid Dr. Delis the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Constantine Geor Delis graduated from Chicago College of Osteopathic Medicine at Midwestern University
Dr. Delis graduated from Chicago College of Osteopathic Medicine at Midwestern University in 1993.
- Medical school
- Board certified in nephrology
- Board certified in 1996 - 2026
Source: Dmand AI Professional Profile Data
Dr. Constantine Geor Delis accepts plans from 13 insurance carriers
Dr. Delis is in network with 13 carriers, including Aetna, Elevance and HCSC. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Elevance
- HCSC
- Blue Cross Blue Shield of Michigan
- Cigna
- United Healthcare
- Humana
- Blue Cross Blue Shield of Massachusetts
- +5 more carriersWith a free account
Plan types Dr. Delis accepts, by number of carriers
- Medicare11
- PPO10
- HMO9
- POS6
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Constantine Geor Delis's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Constantine Geor Delis
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Constantine Geor Delis' NPI number?
Dr. Constantine Geor Delis' NPI number is 1003892043. It was assigned on December 21, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Constantine Geor Delis?
Dr. Constantine Geor Delis is a nephrologist in Lincolnwood, Illinois. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Constantine Geor Delis practice?
Dr. Delis practices at 4600 Touhy Avenue, Lincolnwood, IL 60712. Dr. Delis' primary practice is Concerto Renal Services - Lincolnwood in Lincolnwood, Illinois. Dmand AI also links Dr. Delis to 3 hospitals, 3 dialysis centers and 1 group practice or clinic.
What is Dr. Constantine Geor Delis' office phone number?
The practice phone on file for Dr. Delis is (847) 443-1228.
What is Dr. Constantine Geor Delis' medical license number?
Dr. Delis holds Illinois license 036092711.
Which hospitals is Dr. Constantine Geor Delis affiliated with?
Dr. Delis is affiliated with Loyola University Medical Center. Dmand AI links Dr. Delis to 3 more hospitals.
What medical group is Dr. Constantine Geor Delis part of?
Dr. Delis is linked to Associates in Nephrology.
Does Dr. Constantine Geor Delis accept Medicare?
Yes. CMS data shows Dr. Delis billed Medicare for 1,549 services in 2024, and Dr. Delis accepts Medicare assignment.
How many Medicare patients does Dr. Constantine Geor Delis see?
CMS counts 234 Medicare patients who saw Dr. Delis in 2024, with an average age of 72.
Is Dr. Constantine Geor Delis board certified?
Yes. Dr. Delis is board certified in nephrology by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Constantine Geor Delis bill to Medicare?
In 2024, Dr. Delis' most billed Medicare services were hospital inpatient care (99232), dialysis (90960) and dialysis (90935).
Where did Dr. Constantine Geor Delis go to medical school?
Dr. Delis graduated from Chicago College of Osteopathic Medicine at Midwestern University in 1993.
What drugs does Dr. Constantine Geor Delis prescribe most?
In 2024 Medicare Part D data, Dr. Delis' most prescribed drugs by claims were Sevelamer Carbonate, Hydralazine HCl and Allopurinol.
Has Dr. Constantine Geor Delis received payments from drug or device companies?
CMS Open Payments shows $1,762 in general payments to Dr. Delis from 13 companies from 2016 to 2025. The largest total came from Fresenius USA Marketing, Inc.
How long has Dr. Constantine Geor Delis been practicing?
Dr. Delis graduated from medical school in 1993, 33 years ago.
What insurance does Dr. Constantine Geor Delis accept?
Dr. Delis is in network with 13 carriers, including Aetna, Elevance and HCSC. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
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