Ronald Lis, M.D.
Critical Care Medicine (Internal Medicine) Physician · Paterson, NJ
Ronald Lis, M.D. is a critical care medicine (internal medicine) physician with a practice address in Paterson, New Jersey, and NPI 1205987021, issued on Jan 16, 2007. Check the license (New Jersey 25MA05320300, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ronald Lis
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License numbers
- 25MA05320300 NJ
165062 NY
Self-reported in NPPES; status is on the state search - Practice location
- Saint Joseph's Hospital, Paterson, NJ 07503
- Phone
- (973) 754-2000
- Enumerated
- Jan 16, 2007
- Record last updated
- Apr 1, 2025
- Medicaid ID
- 01454113 NY
- Medicare enrollment
- Enrolled (PECOS I20200619000005); accepts Medicare assignment
- Medical or professional school
- Rowan University School Of Osteopathic Medicine, 1984
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 225 in New Jersey → Look up another NPI →
Verify Ronald Lis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA05320300Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
17 Medicare Part D claims, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D.
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: $16.26
1 payment: food and beverage; the largest payer was Masimo Corporation. The 2,708 providers of this specialty with any payment received $2,958.68 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
- St Josephs Medical Group PCPaterson, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronald Lis among 225 critical care medicine (internal medicine) physician records in New Jersey
Ronald Lis, M.D. is one of 225 critical care medicine (internal medicine) physician records with a practice address in New Jersey. 91% 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 26% of them.
- NPI issued2007 · 26% of these records are older, 66% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 85% of these records are
- Graduated1984 · median 2011 among the 192 with a school on file
- Record last updated2025 · 34% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in New Jersey
There are 225 critical care medicine (internal medicine) physician records in New Jersey.
All 225 in New Jersey → Every provider in Paterson → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Moh'd Hazem AzzamPaterson, NJ 075031902185135
- Mourad Ismail, M.D.Paterson, NJ 075031386686269
- Haris Kalatoudis, M.D.Paterson, NJ 075031144587502
- Konstantinos Leou, MDPaterson, NJ 075031306269493
- Natalia Levytska, M.D.Paterson, NJ 075031255726022
- Hussein Mhanna, MD, DOPaterson, NJ 075031437619061
- Kruthika ReddyPaterson, NJ 075031891176913
- Svetlana Fridlyand, DORidgewood, NJ 074501477935948
Common questions
What is Ronald Lis, M.D.'s NPI number?
Ronald Lis, M.D.'s National Provider Identifier (NPI) is 1205987021, issued on Jan 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Lis, M.D. located?
The NPPES record lists a practice address at Saint Joseph's Hospital, Paterson, NJ, 07503. Phone: (973) 754-2000. Providers update this record themselves, so call before visiting.
How can I verify Ronald Lis, M.D.'s license?
NPPES lists New Jersey license number 25MA05320300, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ronald Lis, M.D. prescribe under Medicare Part D?
In 2024, Ronald Lis, M.D. had 17 Medicare Part D claims; the average among critical care medicine (internal medicine) physician prescribers was 696. 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.