George Ronen Nissan, DO
Internal Medicine Physician · Chicago, IL
George Ronen Nissan, DO is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1245222033, issued on Aug 17, 2005. Check the license (Illinois 036108447, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- George Ronen Nissan
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 036108447 IL
L0459 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1460 N Halsted St Ste 501, Chicago, IL 60642
- Phone
- (773) 388-6390
- Enumerated
- Aug 17, 2005
- Record last updated
- Aug 8, 2025
- Fax
- (312) 867-7101
- Medicare enrollment
- Enrolled (PECOS I20100621000200); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 1999
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1460 N Halsted St Ste 501
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Delmonaco, PA-CPhysician Assistant1740800739
- Merle Diamond, MDInternal Medicine Physician1780676668
- Jessica HorwitzFamily Nurse Practitioner1649758426
- Christine Lantin, PA-CPhysician Assistant1609815638
- Morgan Simms, APRNNurse Practitioner1902763782
- Lindsay Sloan, PA-CPhysician Assistant1972046860
Verify George Ronen Nissan 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 036108447Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average internal medicine physician in 2024
855 Medicare Part D claims for 106 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Tizanidine Hcl57 claims
- Aimovig Autoinjector35 claims
- Emgality Pen34 claims
- Diphenhydramine Hcl32 claims
- Baclofen28 claims
- Gabapentin26 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: $5,333.17
135 payments; by number, the most common kind was food and beverage; the largest payer was Tonix Medicines, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Endeavor Health Medical GroupChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
2,867 internal medicine physician records list a practice address in Chicago
They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois.
All 2,867 in Chicago → All 7,238 in Illinois → Every provider in Chicago →
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 George Ronen Nissan, DO's NPI number?
George Ronen Nissan, DO's National Provider Identifier (NPI) is 1245222033, issued on Aug 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is George Ronen Nissan, DO located?
The NPPES record lists a practice address at 1460 N Halsted St Ste 501, Chicago, IL, 60642. Phone: (773) 388-6390. Providers update this record themselves, so call before visiting.
How can I verify George Ronen Nissan, DO's license?
NPPES lists Illinois license number 036108447, 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 George Ronen Nissan, DO prescribe under Medicare Part D?
In 2024, George Ronen Nissan, DO had 855 Medicare Part D claims for 106 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.