Daniel Marks, M.D.
Clinical Cardiac Electrophysiology Physician · Joliet, IL
Daniel Marks, M.D. is a clinical cardiac electrophysiology physician with a practice address in Joliet, Illinois, and NPI 1457794406, issued on Apr 9, 2013. Check the license (Illinois 036-149816, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Daniel Marks
- Credential
- M.D.
- Primary taxonomy
- Clinical Cardiac Electrophysiology Physician 207RC0001X
- License number
- 036-149816 IL
Self-reported in NPPES; status is on the state search - Practice location
- 301 Madison St Ste 207, Joliet, IL 60435
- Phone
- (815) 740-1900
- Enumerated
- Apr 9, 2013
- Record last updated
- Aug 20, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (815) 729-3294
- Medicare enrollment
- Enrolled (PECOS I20210624002060); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical cardiac electrophysiology physician records → All 166 in Illinois → Look up another NPI →
Also registered at 301 Madison St Ste 207
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Krystal Al-Haj, FNP-BCNurse Practitioner1750027793
- Parabjit Kaur, APNNurse Practitioner1154113520
- Dennis Killian, M.D.Cardiovascular Disease Physician1568411536
- Becky Marshall, APNNurse Practitioner1851116354
- Abdul Safadi, M.D.Cardiovascular Disease Physician1659544252
Verify Daniel Marks 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 036-149816Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average clinical cardiac electrophysiology physician in 2024
1,080 Medicare Part D claims for 302 beneficiaries, against an average of 1,710 among the 3,173 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Eliquis236 claims
- Metoprolol Succinate223 claims
- Amiodarone Hcl125 claims
- Flecainide Acetate113 claims
- Metoprolol Tartrate39 claims
- Lisinopril35 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: $17,875.06
116 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 3,167 providers of this specialty with any payment received $10,651.37 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.
Bills Medicare through one group practice
- Rush University Medical GroupChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Daniel Marks among 166 clinical cardiac electrophysiology physician records in Illinois
Daniel Marks, M.D. is one of 166 clinical cardiac electrophysiology physician records with a practice address in Illinois. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 76% of them.
- NPI issued2013 · 76% of these records are older, 19% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated2013 · median 2003 among the 138 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0001X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Cardiac Electrophysiology Physician providers in Illinois
There are 166 clinical cardiac electrophysiology physician records in Illinois.
All 166 in Illinois → Every provider in Joliet → Clinical Cardiac Electrophysiology Physician nationwide →
The 8 clinical cardiac electrophysiology physician records with the nearest ZIP codes
- Ahmad Abdul Karim, M.DJoliet, IL 604351588721328
- Adarsh Bhan, M.D.Hazel Crest, IL 604291699783209
- Andy Lin, M.D.Harvey, IL 604261336204031
- Sunil Shroff, M.D.Morris, IL 604501437214947
- John Dongas, M.D.New Lenox, IL 604511003864331
- William Janes, M.D.Oak Lawn, IL 604531710367404
- Jeffrey Neiger, MDOak Lawn, IL 604531275719072
- Mansour Razminia, M.D.Palos Heights, IL 604631891802203
Common questions
What is Daniel Marks, M.D.'s NPI number?
Daniel Marks, M.D.'s National Provider Identifier (NPI) is 1457794406, issued on Apr 9, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Daniel Marks, M.D. located?
The NPPES record lists a practice address at 301 Madison St Ste 207, Joliet, IL, 60435. Phone: (815) 740-1900. Providers update this record themselves, so call before visiting.
How can I verify Daniel Marks, M.D.'s license?
NPPES lists Illinois license number 036-149816, 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 Daniel Marks, M.D. prescribe under Medicare Part D?
In 2024, Daniel Marks, M.D. had 1,080 Medicare Part D claims for 302 beneficiaries; the average among clinical cardiac electrophysiology physician prescribers was 1,710. 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.