Nicholas Hac, M.D.
Neurology Physician · Chicago, IL
Nicholas Hac, M.D. is a neurology physician with a practice address in Chicago, Illinois, and NPI 1144683780, issued on Mar 31, 2016. Check the license (Illinois 036152380, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Nicholas Hac
- Credential
- M.D.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- 036152380 IL
036.152380 IL
Self-reported in NPPES; status is on the state search - Practice location
- 259 E Erie St Ste 1900, Chicago, IL 60611
- Phone
- (312) 695-7950
- Enumerated
- Mar 31, 2016
- Record last updated
- Jul 23, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200518000419); accepts Medicare assignment
- Medical or professional school
- University Of Virginia School Of Medicine, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 952 in Illinois → Look up another NPI →
Also registered at 259 E Erie St Ste 1900
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Aasheeta Bawa, PA-CPhysician Assistant1861865347
Verify Nicholas Hac 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 036152380Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average neurology physician in 2024
266 Medicare Part D claims for 66 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Duloxetine Hcl51 claims
- Venlafaxine Hcl Er21 claims
- Metoprolol Succinate18 claims
- Emgality Pen17 claims
- Propranolol Hcl16 claims
- Topiramate16 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 MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Northwestern Medical Faculty FoundationChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholas Hac among 952 neurology physician records in Illinois
Nicholas Hac, M.D. is one of 952 neurology physician records with a practice address in Illinois. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 66% of them.
- NPI issued2016 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2016 · median 2006 among the 573 with a school on file
- Record last updated2020 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Illinois
There are 952 neurology physician records in Illinois.
All 952 in Illinois → Every provider in Chicago → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Roumen Balabanov, M.D.Chicago, IL 606111508817941
- Bruce Cohen, MDChicago, IL 606111174553580
- Jennifer Goldman, MDChicago, IL 606111366428724
- Ramadevi Gourineni, MDChicago, IL 606111508801861
- Timothy Hain, MDChicago, IL 606111285620492
- Scott Heller, MDChicago, IL 606111962409243
- Sam Ho, M.D.Chicago, IL 606111851352272
- Suja Ann Joseph, MDChicago, IL 606111518911882
Common questions
What is Nicholas Hac, M.D.'s NPI number?
Nicholas Hac, M.D.'s National Provider Identifier (NPI) is 1144683780, issued on Mar 31, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas Hac, M.D. located?
The NPPES record lists a practice address at 259 E Erie St Ste 1900, Chicago, IL, 60611. Phone: (312) 695-7950. Providers update this record themselves, so call before visiting.
How can I verify Nicholas Hac, M.D.'s license?
NPPES lists Illinois license number 036152380, 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 Nicholas Hac, M.D. prescribe under Medicare Part D?
In 2024, Nicholas Hac, M.D. had 266 Medicare Part D claims for 66 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
What is Nicholas Hac, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.1 of 100. 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.