Dr. Lillian Rochelle S J De Leon, MD
- Medicare services, 2024
- 527
- Medicare patients, 2024
- 103
- Part D claims, 2024
- 6,767
- Hospital affiliations
- 3
- Industry payments
- $13,678
- Practice address
- 2701 W 68th Street, Chicago, IL 60629
- Practice phone
- Call (773) 884-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. De Leon's professional email, personal email and mobile number
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Dr. Lillian Rochelle S J De Leon is an internist in Chicago, Illinois
Dr. De Leon practices at Holy Cross Hospital in Chicago, Illinois, part of Sinai Health System.
Dr. De Leon's NPI, 1134142193, was assigned on July 25, 2006. Dr. De Leon holds Illinois license 036089949.
- NPI
- 1134142193NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1355510397
- NPI enumeration date
- July 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (773) 884-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Lillian Rochelle S J De Leon practices at Holy Cross Hospital in Chicago, Illinois
Dr. De Leon's primary practice is Holy Cross Hospital, at 2701 W 68th Street, Chicago, IL 60629 in Cook County. The practice phone is (773) 884-9000.
- Holy Cross Hospital2701 W 68th Street, Chicago, IL 60629 · Cook CountyPhone(773) 884-9000
Source: Dmand AI Affiliation Data
Dr. Lillian Rochelle S J De Leon is affiliated with 5 sites of care
Dr. De Leon's primary practice is Holy Cross Hospital in Chicago, Illinois, part of Sinai Health System. Dr. De Leon is also affiliated with Mount Sinai Hospital. Dmand AI also links Dr. De Leon to 1 more hospital, 1 physician office and 1 home health agency, 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. Lillian Rochelle S J De Leon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. De Leon practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Holy Cross Hospital | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Sinai Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Lillian Rochelle S J De Leon is one of 5,652 internists in Illinois
Internal medicine is Dr. De Leon's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. De Leon is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. De Leon
Counts of internists 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. Lillian Rochelle S J De Leon billed Medicare for 527 services in 2024
CMS data shows 527 Medicare services from Dr. De Leon across 8 procedure codes in 2024, for 103 Medicare patients. Medicare paid $34,831 for them. Every service was in an office.
Dr. De Leon's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5802024: 44324%
- Other services
- 2023: 702024: 8420%
Dr. De Leon compared with the Illinois median for internists, 2024
- Dr. De Leon
- Illinois median
- Medicare services
- 527vs 5667% below
- Medicare patients
- 103vs 20850% below
- Part D claims
- 6,237vs 28422.0 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. De Leon'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. De Leon and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Lillian Rochelle S J De Leon treated 103 Medicare patients in 2024, average age 73
CMS counts 103 Medicare patients who saw Dr. De Leon in 2024. The largest group is 75 to 84, with 33 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 50% are also on Medicaid. Their average risk score is 1.27, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. De Leon's median patient age at 67, with 69% women.
Dr. De Leon's Medicare patients by age, 2024
Dr. De Leon's Medicare patients by sex, 2024
- Women8583%
- Men1817%
Chronic conditions among Dr. De Leon's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes51%
- Arthritis42%
- Chronic kidney disease30%
- Mood disorders18%
- Asthma17%
- Heart failure17%
Share of Medicare patients with each condition. A patient can have several.
Dr. De Leon's 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
- Women69%
- Men30%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Lillian Rochelle S J De Leon wrote 6,767 Medicare Part D claims in 2024
In 2024, Dr. De Leon wrote 6,767 Medicare Part D claims for 295 patients. 78% of them were for generic drugs. CMS names the drug for 6,237 of them, across 103 drugs with 11 or more claims each, at $919,967 in total drug cost. In 2023, CMS named 6,100 claims across 103 drugs.
Dr. De Leon's Part D claims by kind of drug, 2024
- Generic5,310 claims78%
- Brand-name1,303 claims19%
- Other154 claims2%
Dr. De Leon'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. De Leon's Part D claims, 2024
- Opioids0%17 of 6,767 claims
- Antibiotics2%120 of 6,767 claims
- Antipsychotics, patients 65 and over0%24 of 6,767 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: 6,1002024: 6,2372%
Drugs named by CMS: 103 in 2024, 103 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. Lillian Rochelle S J De Leon offers telehealth to Medicare patients
Dr. De Leon accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. De Leon as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Lillian Rochelle S J De Leon received $13,678 in industry payments from 2016 to 2025
CMS Open Payments shows 712 general payments to Dr. De Leon from 35 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Eli Lilly and Company paid the most, $1,316.
General payments to Dr. De Leon by program year, 2016 to 2025
General payments to Dr. De Leon by kind, 2016 to 2025
- Food and beverage$13,45098%
- Education$2282%
Companies that paid Dr. De Leon the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Lillian Rochelle S J De Leon'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) |
| 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. Lillian Rochelle S J De Leon
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. Lillian Rochelle S J De Leon's NPI number?
Dr. Lillian Rochelle S J De Leon's NPI number is 1134142193. It was assigned on July 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Lillian Rochelle S J De Leon?
Dr. Lillian Rochelle S J De Leon is an internist in Chicago, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Lillian Rochelle S J De Leon practice?
Dr. De Leon practices at 2701 W 68th Street, Chicago, IL 60629. Dr. De Leon's primary practice is Holy Cross Hospital in Chicago, Illinois, part of Sinai Health System. Dmand AI also links Dr. De Leon to 1 hospital, 1 physician office and 1 home health agency.
What is Dr. Lillian Rochelle S J De Leon's office phone number?
The practice phone on file for Dr. De Leon is (773) 884-9000.
What is Dr. Lillian Rochelle S J De Leon's medical license number?
Dr. De Leon holds Illinois license 036089949.
Which hospitals is Dr. Lillian Rochelle S J De Leon affiliated with?
Dr. De Leon practices at Holy Cross Hospital in Chicago, Illinois. Dr. De Leon is also affiliated with Mount Sinai Hospital. Dmand AI links Dr. De Leon to 1 more hospital.
Does Dr. Lillian Rochelle S J De Leon accept Medicare?
Yes. CMS data shows Dr. De Leon billed Medicare for 527 services in 2024, and Dr. De Leon accepts Medicare assignment.
Does Dr. Lillian Rochelle S J De Leon offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. De Leon as offering telehealth services.
How many Medicare patients does Dr. Lillian Rochelle S J De Leon see?
CMS counts 103 Medicare patients who saw Dr. De Leon in 2024, with an average age of 73.
What services does Dr. Lillian Rochelle S J De Leon bill to Medicare?
In 2024, Dr. De Leon's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and medicare service (G0439).
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What drugs does Dr. Lillian Rochelle S J De Leon prescribe most?
In 2024 Medicare Part D data, Dr. De Leon's most prescribed drugs by claims were Atorvastatin Calcium, Metoprolol Succinate and Amlodipine Besylate.
Has Dr. Lillian Rochelle S J De Leon received payments from drug or device companies?
CMS Open Payments shows $13,678 in general payments to Dr. De Leon from 35 companies from 2016 to 2025. The largest total came from Eli Lilly and Company.
How long has Dr. Lillian Rochelle S J De Leon been practicing?
Dr. De Leon graduated from medical school in 1988, 38 years ago.
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