Dan Valentin Mihailescu, MD
Endocrinology, Diabetes & Metabolism Physician · Chicago, IL
Dan Valentin Mihailescu, MD is an endocrinology, diabetes & metabolism physician with a practice address in Chicago, Illinois, and NPI 1104951250, issued on Feb 22, 2007. Check the license (Illinois 036101988, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Dan Valentin Mihailescu
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- 036101988 IL
036-101988 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1819 W Polk St, Chicago, IL 60612
- Phone
- (312) 996-6062
- Enumerated
- Feb 22, 2007
- Record last updated
- Apr 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20070810000092); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 436 in Illinois → Look up another NPI →
Verify Dan Valentin Mihailescu 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 036101988Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
257 Medicare Part D claims for 60 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 62% of claims.
Most prescribed
- Trulicity36 claims
- Levothyroxine Sodium32 claims
- Jardiance16 claims
- Ozempic15 claims
- Hydrocortisone14 claims
- Humalog12 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 84.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Cook CountyChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dan Valentin Mihailescu among 436 endocrinology, diabetes & metabolism physician records in Illinois
Dan Valentin Mihailescu, MD is one of 436 endocrinology, diabetes & metabolism physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 38% of them.
- NPI issued2007 · 38% of these records are older, 50% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1995 · median 2006 among the 295 with a school on file
- Record last updated2021 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Illinois
There are 436 endocrinology, diabetes & metabolism physician records in Illinois.
All 436 in Illinois → Every provider in Chicago → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Ambika Amblee, MDChicago, IL 606121225090590
- Antonio Bianco, M.D.Chicago, IL 606121720225188
- Yuval Eisenberg, M.D.Chicago, IL 606121366685828
- Leon Fogelfeld, M.D.Chicago, IL 606121699732305
- Rasa Kazlauskaite, MD, MSC, FACEChicago, IL 606121487609954
- Subhash Kukreja, M.D.Chicago, IL 606121962511238
- Evelyn Lacuesta, M.D.Chicago, IL 606121730122672
- Susana Mascarell, M.DChicago, IL 606121700831328
Common questions
What is Dan Valentin Mihailescu, MD's NPI number?
Dan Valentin Mihailescu, MD's National Provider Identifier (NPI) is 1104951250, issued on Feb 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Dan Valentin Mihailescu, MD located?
The NPPES record lists a practice address at 1819 W Polk St, Chicago, IL, 60612. Phone: (312) 996-6062. Providers update this record themselves, so call before visiting.
How can I verify Dan Valentin Mihailescu, MD's license?
NPPES lists Illinois license number 036101988, 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 Dan Valentin Mihailescu, MD prescribe under Medicare Part D?
In 2024, Dan Valentin Mihailescu, MD had 257 Medicare Part D claims for 60 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Dan Valentin Mihailescu, MD's MIPS final score?
The 2023 MIPS final score is 84.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.