Dr. Timothy L. Gillison, MD
- Medicare services, 2024
- 96,529
- Medicare patients, 2024
- 643
- Part D claims, 2024
- 2,036
- MIPS score, 2024
- 89
- Hospital affiliations
- 3
- Practice address
- 5721 S Maryland Ave, Chicago, IL 60637
- Practice phone
- Call (773) 702-1530
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Comer Children's Hospital - Hyde Park
Chicago, Illinois
Find Dr. Gillison's professional email, personal email and mobile number
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Dr. Timothy L. Gillison is a hematologist and oncologist in Chicago, Illinois
Dr. Gillison practices at Comer Children's Hospital - Hyde Park in Chicago, Illinois.
Dr. Gillison's NPI, 1710905906, was assigned on July 17, 2006. Dr. Gillison graduated from Southern Illinois University School of Medicine in 2003. Dr. Gillison holds Illinois license 036125875.
- NPI
- 1710905906NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2062411572
- NPI enumeration date
- July 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (773) 702-1530
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Timothy L. Gillison practices at Comer Children's Hospital - Hyde Park in Chicago, Illinois
Dr. Gillison's primary practice is Comer Children's Hospital - Hyde Park, at 5721 S Maryland Ave, Chicago, IL 60637 in Cook County. The practice phone is (773) 702-1530.
- Comer Children's Hospital - Hyde Park5721 S Maryland Ave, Chicago, IL 60637 · Cook CountyPhone(773) 702-1530
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Timothy L. Gillison is affiliated with 6 sites of care and 2 medical groups
Dr. Gillison's primary practice is Comer Children's Hospital - Hyde Park in Chicago, Illinois. Dr. Gillison is also affiliated with University of Chicago Medical Center. The medical group on file is UChicago Medicine Physicians. Dmand AI also links Dr. Gillison to 2 more hospitals, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Timothy L. Gillison's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gillison practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Comer Children's Hospital - Hyde Park | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Timothy L. Gillison is one of 563 hematologists and oncologists in Illinois
Hematology and oncology is Dr. Gillison's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Gillison is licensed in Illinois.
Specialties and state licenses
- Hematology and oncology, IllinoisPrimary
Hematologists and oncologists near Dr. Gillison
Counts of hematologists and oncologists 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. Timothy L. Gillison billed Medicare for 96,529 services in 2024
CMS data shows 96,529 Medicare services from Dr. Gillison across 28 procedure codes in 2024, for 643 Medicare patients. Medicare paid $1,447,173 for them. Every service was in an office.
Dr. Gillison's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 140,6162024: 91,82735%
- Tests and treatments
- 2023: 2,3492024: 1,35043%
- Office and hospital visits
- 2023: 1,7312024: 1,34922%
- Lab and pathology
- 2023: 1,8912024: 1,19637%
- Surgery
- 2023: 1,0832024: 76929%
- Other services
- 2023: 02024: 38
Dr. Gillison compared with the Illinois median for hematologists and oncologists, 2024
- Dr. Gillison
- Illinois median
- Medicare services
- 96,529vs 1,05691.4 times
- Medicare patients
- 643vs 2822.3 times
- Part D claims
- 1,775vs 3285.4 times
Medians across 547 hematologists and oncologists in Illinois with Dmand AI profiles that report each measure.
Dr. Gillison's 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gillison and other hematologists and oncologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Timothy L. Gillison treated 643 Medicare patients in 2024, average age 75
CMS counts 643 Medicare patients who saw Dr. Gillison in 2024. The largest group is 75 to 84, with 253 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.70, 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. Gillison's median patient age at 72, with 58% women.
Dr. Gillison's Medicare patients by age, 2024
Dr. Gillison's Medicare patients by sex, 2024
- Women38560%
- Men25840%
Chronic conditions among Dr. Gillison's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Cancer49%
- Arthritis47%
- Ischemic heart disease41%
- Diabetes35%
- COPD30%
- Anxiety29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gillison's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Timothy L. Gillison wrote 2,036 Medicare Part D claims in 2024
In 2024, Dr. Gillison wrote 2,036 Medicare Part D claims for 300 patients. 79% of them were for generic drugs. CMS names the drug for 1,775 of them, across 50 drugs with 11 or more claims each, at $5,794,609 in total drug cost. In 2023, CMS named 2,029 claims across 56 drugs.
Dr. Gillison's Part D claims by kind of drug, 2024
- Generic1,609 claims79%
- Brand-name and other427 claims21%
Dr. Gillison's 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. Gillison's Part D claims, 2024
- Opioids7%152 of 2,036 claims
- Antibiotics3%60 of 2,036 claims
- Antipsychotics, patients 65 and over1%11 of 2,036 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: 2,0292024: 1,77513%
Drugs named by CMS: 50 in 2024, 56 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
Dr. Timothy L. Gillison scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Gillison for performance year 2024, reported through an alternative payment model (APM). Dr. Gillison accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Gillison's MIPS scores, performance year 2024
- 89of 100Final score
- 75.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Timothy L. Gillison received $1,234 in industry payments from 2016 to 2025
CMS Open Payments shows 55 general payments to Dr. Gillison from 19 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 84% of the total. Merck Sharp & Dohme Corporation paid the most, $205.
General payments to Dr. Gillison by program year, 2016 to 2025
General payments to Dr. Gillison by kind, 2016 to 2025
- Food and beverage$1,04284%
- Education$19116%
Companies that paid Dr. Gillison 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. Timothy L. Gillison graduated from Southern Illinois University School of Medicine
Dr. Gillison graduated from Southern Illinois University School of Medicine in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Timothy L. Gillison'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)Clinician Public Reporting: Overall MIPS Performance (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 |
| 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. Timothy L. Gillison
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. Timothy L. Gillison's NPI number?
Dr. Timothy L. Gillison's NPI number is 1710905906. It was assigned on July 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Timothy L. Gillison?
Dr. Timothy L. Gillison is a hematologist and oncologist in Chicago, Illinois. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Timothy L. Gillison practice?
Dr. Gillison practices at 5721 S Maryland Ave, Chicago, IL 60637. Dr. Gillison's primary practice is Comer Children's Hospital - Hyde Park in Chicago, Illinois. Dmand AI also links Dr. Gillison to 2 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. Timothy L. Gillison's office phone number?
The practice phone on file for Dr. Gillison is (773) 702-1530.
What is Dr. Timothy L. Gillison's medical license number?
Dr. Gillison holds Illinois license 036125875.
Which hospitals is Dr. Timothy L. Gillison affiliated with?
Dr. Gillison is affiliated with University of Chicago Medical Center. Dmand AI links Dr. Gillison to 2 more hospitals.
What medical group is Dr. Timothy L. Gillison part of?
Dr. Gillison is linked to UChicago Medicine Physicians. Dmand AI links Dr. Gillison to 1 more medical group.
Does Dr. Timothy L. Gillison accept Medicare?
Yes. CMS data shows Dr. Gillison billed Medicare for 96,529 services in 2024, and Dr. Gillison accepts Medicare assignment.
What is Dr. Timothy L. Gillison's MIPS score?
Dr. Gillison's MIPS final score for performance year 2024 is 89 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Timothy L. Gillison see?
CMS counts 643 Medicare patients who saw Dr. Gillison in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. Timothy L. Gillison bill to Medicare?
In 2024, Dr. Gillison's most billed Medicare services were injected or infused drug (J1756), injected or infused drug (J9271) and injected or infused drug (J1439).
Where did Dr. Timothy L. Gillison go to medical school?
Dr. Gillison graduated from Southern Illinois University School of Medicine in 2003.
What drugs does Dr. Timothy L. Gillison prescribe most?
In 2024 Medicare Part D data, Dr. Gillison's most prescribed drugs by claims were Anastrozole, Potassium Chloride and Hydrocodone-Acetaminophen.
Has Dr. Timothy L. Gillison received payments from drug or device companies?
CMS Open Payments shows $1,234 in general payments to Dr. Gillison from 19 companies from 2016 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Timothy L. Gillison been practicing?
Dr. Gillison graduated from medical school in 2003, 23 years ago.
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