Lillian Rochelle S J De Leon, MD
Internal Medicine Physician · Chicago, IL
Lillian Rochelle S J De Leon, MD is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1134142193, issued on Jul 25, 2006. Check the license (Illinois 036089949, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Lillian Rochelle S J De Leon
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036089949 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2701 W 68TH St, Chicago, IL 60629
- Phone
- (773) 884-7922
- Enumerated
- Jul 25, 2006
- Record last updated
- Jan 12, 2025
- Fax
- (773) 884-8066
- Medicaid IDs
- 036089949 IL
0360899492 IL - Medicare enrollment
- Enrolled (PECOS I20110809000718); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 2701 W 68TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Lillian Rochelle S J De Leon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036089949Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average internal medicine physician in 2024
6,767 Medicare Part D claims for 295 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 17 claims were for opioids.
Most prescribed
- Atorvastatin Calcium501 claims
- Metoprolol Succinate332 claims
- Amlodipine Besylate315 claims
- Losartan Potassium227 claims
- Nifedipine Er204 claims
- Levothyroxine Sodium180 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,336.66
61 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Lillian Rochelle S J De Leon among 7,238 internal medicine physician records in Illinois
Lillian Rochelle S J De Leon, MD is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1988 · median 2003 among the 3,580 with a school on file
- Record last updated2025 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,867 internal medicine physician records list a practice address in Chicago
They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Chicago → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Ann Garcelon, M.D.Chicago, IL 606291750364212
- Martin Lindenberger, M.D.Chicago, IL 606291013981463
- Michael McDonnell, M.D.Chicago, IL 606291467436972
- Nayeh Mirshed, M.D.Chicago, IL 606291689662892
Common questions
What is Lillian Rochelle S J De Leon, MD's NPI number?
Lillian Rochelle S J De Leon, MD's National Provider Identifier (NPI) is 1134142193, issued on Jul 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lillian Rochelle S J De Leon, MD located?
The NPPES record lists a practice address at 2701 W 68TH St, Chicago, IL, 60629. Phone: (773) 884-7922. Providers update this record themselves, so call before visiting.
How can I verify Lillian Rochelle S J De Leon, MD's license?
NPPES lists Illinois license number 036089949, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Lillian Rochelle S J De Leon, MD prescribe under Medicare Part D?
In 2024, Lillian Rochelle S J De Leon, MD had 6,767 Medicare Part D claims for 295 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.