Jillian Marie Costello, DO
Internal Medicine Physician · Peoria, IL
Jillian Marie Costello, DO is an internal medicine physician with a practice address in Peoria, Illinois, and NPI 1033796750, issued on Mar 27, 2021. Check the license (Illinois 036.173992, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Jillian Marie Costello
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 036.173992 IL
390200000X IL
Self-reported in NPPES; status is on the state search - Practice location
- 530 NE Glen Oak Ave, Peoria, IL 61637
- Phone
- (309) 655-2000
- Enumerated
- Mar 27, 2021
- Record last updated
- May 22, 2025
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 530 NE Glen Oak Ave
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Verify Jillian Marie Costello 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 036.173992Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average internal medicine physician in 2024
125 Medicare Part D claims for 38 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Atorvastatin Calcium16 claims
- Spironolactone11 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.
Jillian Marie Costello among 7,238 internal medicine physician records in Illinois
Jillian Marie Costello, DO 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 2021, is newer than 74% of them.
- NPI issued2021 · 74% of these records are older, 22% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- 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).
173 internal medicine physician records list a practice address in Peoria
They are 173 of the 4,621 NPPES records with a practice address in Peoria, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Peoria → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Meenakshy Aiyer, MDPeoria, IL 616371346213170
- Antoine Daccache, MDPeoria, IL 616371336255611
- Jacqueline Fischer, MDPeoria, IL 616371417921024
- James Graumlich, MDPeoria, IL 616371366417685
- Jessica Hanks, M.D.Peoria, IL 616371952525222
- Richard Harvey, MDPeoria, IL 616371740259068
- Ghaly Kerolus, MDPeoria, IL 616371669433611
- Christopher Martin, MDPeoria, IL 616371043285315
Common questions
What is Jillian Marie Costello, DO's NPI number?
Jillian Marie Costello, DO's National Provider Identifier (NPI) is 1033796750, issued on Mar 27, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Jillian Marie Costello, DO located?
The NPPES record lists a practice address at 530 NE Glen Oak Ave, Peoria, IL, 61637. Phone: (309) 655-2000. Providers update this record themselves, so call before visiting.
How can I verify Jillian Marie Costello, DO's license?
NPPES lists Illinois license number 036.173992, 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 Jillian Marie Costello, DO prescribe under Medicare Part D?
In 2024, Jillian Marie Costello, DO had 125 Medicare Part D claims for 38 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.