Dennis S. Asensio, M.D.
Internal Medicine Physician · Lisle, IL
Dennis S. Asensio, M.D. is an internal medicine physician with a practice address in Lisle, Illinois, and NPI 1891770624, issued on Dec 14, 2005. Check the license (Illinois 036-075848, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Dennis S. Asensio
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-075848 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2765 Maple Ave, Lisle, IL 60532
- Phone
- (630) 579-9817
- Enumerated
- Dec 14, 2005
- Record last updated
- Dec 1, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (630) 579-9846
- Medicaid ID
- 36075848 IL
- Entity
- Type 1 · individual
Verify Dennis S. Asensio 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 036-075848Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
11 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
16 internal medicine physician records list a practice address in Lisle
They are 16 of the 610 NPPES records with a practice address in Lisle, and 7,238 internal medicine physician records in Illinois.
All 16 in Lisle → All 7,238 in Illinois → Every provider in Lisle →
Other internal medicine physician records in Illinois
- Peter Abadeer, D.O.Bloomington, IL1760469522
- Motaz Abas, MDPeoria, IL1215510201
- Elias Abate, M.D.Chicago, IL1336712199
- Maliha Abbas, D.O.Chicago, IL1174963920
- Zareena Abbas, MDChicago, IL1427078872
- Abu Abbasi, MDChicago, IL1083243877
- Ayesha Abbasi, MDChicago, IL1376216705
- Khalda Abbasi, MDNaperville, IL1487705240
- Elmer Abbo, MDBurr Ridge, IL1710048541
- Paul Abbo, M.D.River Forest, IL1083693378
Common questions
What is Dennis S. Asensio, M.D.'s NPI number?
Dennis S. Asensio, M.D.'s National Provider Identifier (NPI) is 1891770624, issued on Dec 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Dennis S. Asensio, M.D. located?
The NPPES record lists a practice address at 2765 Maple Ave, Lisle, IL, 60532. Phone: (630) 579-9817. Providers update this record themselves, so call before visiting.
How can I verify Dennis S. Asensio, M.D.'s license?
NPPES lists Illinois license number 036-075848, 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 Dennis S. Asensio, M.D. prescribe under Medicare Part D?
In 2024, Dennis S. Asensio, M.D. had 11 Medicare Part D claims; 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.