Dr. Ronald Lee Mars, MD
- Medicare services, 2024
- 370
- Medicare patients, 2024
- 137
- Part D claims, 2024
- 180
- Publications
- 1
- MIPS score, 2024
- 60
- Practice address
- 15255 Max Leggett Pkwy, 2nd and 3rd Floors, Jacksonville, FL 32218
- Practice phone
- Call (904) 456-8001
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Mars' professional email, personal email and mobile number
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Dr. Ronald Lee Mars is a nephrologist in Jacksonville, Florida
Dr. Mars practices at UF Health Rehabilitation Hospital - North in Jacksonville, Florida, part of UF Health.
Dr. Mars' NPI, 1386613602, was assigned on March 17, 2006. Dr. Mars graduated from St. Louis College of Physicians and Surgeons in 1972. Dr. Mars holds Florida license ME59009.
- NPI
- 1386613602NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264429497
- NPI enumeration date
- March 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (904) 456-8001
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 80
- Medical school graduation
- 1972
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ronald Lee Mars practices at UF Health Rehabilitation Hospital - North in Jacksonville, Florida
Dr. Mars' primary practice is UF Health Rehabilitation Hospital - North, at 15255 Max Leggett Pkwy, 2nd and 3rd Floors, Jacksonville, FL 32218 in Duval County. The practice phone is (904) 456-8001.
- UF Health Rehabilitation Hospital - North15255 Max Leggett Pkwy, 2nd and 3rd Floors, Jacksonville, FL 32218 · Duval CountyPhone(904) 456-8001
Source: Dmand AI Affiliation Data
Dr. Ronald Lee Mars is affiliated with 4 sites of care and 1 medical group
Dr. Mars' primary practice is UF Health Rehabilitation Hospital - North in Jacksonville, Florida, part of UF Health. Dr. Mars is also affiliated with UF Health Jacksonville. The medical group on file is UF Jacksonville Physicians, Inc. Dmand AI also links Dr. Mars to 2 more dialysis centers, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ronald Lee Mars' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mars practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UF Health Rehabilitation Hospital - North | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ronald Lee Mars is one of 917 nephrologists in Florida
Nephrology is Dr. Mars' primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Mars is licensed in Florida.
Specialties and state licenses
- Nephrology, FloridaPrimary
Nephrologists near Dr. Mars
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ronald Lee Mars billed Medicare for 370 services in 2024
CMS data shows 370 Medicare services from Dr. Mars across 5 procedure codes in 2024, for 137 Medicare patients. Medicare paid $24,165 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Mars' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 752024: 201168%
- Tests and treatments
- 2023: 1052024: 16961%
Dr. Mars compared with the Florida median for nephrologists, 2024
- Dr. Mars
- Florida median
- Medicare services
- 370vs 1,49075% below
- Medicare patients
- 137vs 38765% below
- Part D claims
- 56vs 93494% below
Medians across 882 nephrologists in Florida with Dmand AI profiles that report each measure.
Dr. Mars' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mars and other nephrologists in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ronald Lee Mars treated 137 Medicare patients in 2024, average age 67
CMS counts 137 Medicare patients who saw Dr. Mars in 2024. The largest group is 65 to 74, with 51 patients. 75% of them have chronic kidney disease, and 75% have diabetes. 51% are also on Medicaid. Their average risk score is 6.19, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Mars' median patient age at 70, with 57% women.
Dr. Mars' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Mars' Medicare patients by sex, 2024
- Women6648%
- Men7152%
Chronic conditions among Dr. Mars' Medicare patients, 2024
- Chronic kidney disease75%
- Diabetes75%
- High blood pressure75%
- High cholesterol75%
- Heart failure72%
- Ischemic heart disease61%
- Arthritis50%
- Mood disorders39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mars' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ronald Lee Mars wrote 180 Medicare Part D claims in 2024
In 2024, Dr. Mars wrote 180 Medicare Part D claims for 43 patients. 98% of them were for generic drugs. CMS names the drug for 56 of them, across 4 drugs with 11 or more claims each, at $220 in total drug cost. In 2023, CMS named 254 claims across 14 drugs.
Dr. Mars' Part D claims by kind of drug, 2024
- Generic176 claims98%
- Brand-name and other4 claims2%
Dr. Mars' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Mars' Part D claims, 2024
- Antibiotics8%14 of 180 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2542024: 5678%
Drugs named by CMS: 4 in 2024, 14 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Ronald Lee Mars scored 60 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 60 out of 100 for Dr. Mars for performance year 2024, reported through an alternative payment model (APM). Dr. Mars accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Mars' MIPS scores, performance year 2024
- 60of 100Final score
- 59.9of 100Quality
- 0of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Ronald Lee Mars has 1 publication on record
Dmand AI links 1 paper to Dr. Mars in 2025. Dr. Mars' most frequent co-author is Elias Ivan Couto Barbosa, MD.
Dr. Mars' most frequent co-authors
Recent publications by Dr. Mars
See who Dr. Mars researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Mars works with, so you can find a warm path to the right nephrologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ronald Lee Mars received $1,050 in industry payments from 2016 to 2025
CMS Open Payments shows 14 general payments to Dr. Mars from 9 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Mallinckrodt Enterprises LLC paid the most, $215.
General payments to Dr. Mars by program year, 2016 to 2025
General payments to Dr. Mars by kind, 2016 to 2025
- Food and beverage$1,049100%
- Education$10%
Companies that paid Dr. Mars the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ronald Lee Mars graduated from St. Louis College of Physicians and Surgeons
Dr. Mars graduated from St. Louis College of Physicians and Surgeons in 1972.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ronald Lee Mars's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ronald Lee Mars
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ronald Lee Mars' NPI number?
Dr. Ronald Lee Mars' NPI number is 1386613602. It was assigned on March 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ronald Lee Mars?
Dr. Ronald Lee Mars is a nephrologist in Jacksonville, Florida. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Ronald Lee Mars practice?
Dr. Mars practices at 15255 Max Leggett Pkwy, 2nd and 3rd Floors, Jacksonville, FL 32218. Dr. Mars' primary practice is UF Health Rehabilitation Hospital - North in Jacksonville, Florida, part of UF Health. Dmand AI also links Dr. Mars to 2 dialysis centers.
What is Dr. Ronald Lee Mars' office phone number?
The practice phone on file for Dr. Mars is (904) 456-8001.
What is Dr. Ronald Lee Mars' medical license number?
Dr. Mars holds Florida license ME59009.
Which hospitals is Dr. Ronald Lee Mars affiliated with?
Dr. Mars practices at UF Health Rehabilitation Hospital - North in Jacksonville, Florida. Dr. Mars is also affiliated with UF Health Jacksonville.
What medical group is Dr. Ronald Lee Mars part of?
Dr. Mars is linked to UF Jacksonville Physicians, Inc.
Does Dr. Ronald Lee Mars accept Medicare?
Yes. CMS data shows Dr. Mars billed Medicare for 370 services in 2024, and Dr. Mars accepts Medicare assignment.
What is Dr. Ronald Lee Mars' MIPS score?
Dr. Mars' MIPS final score for performance year 2024 is 60 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Ronald Lee Mars see?
CMS counts 137 Medicare patients who saw Dr. Mars in 2024, with an average age of 67.
Show 7 more questionsShow fewer questions
What services does Dr. Ronald Lee Mars bill to Medicare?
In 2024, Dr. Mars' most billed Medicare services were dialysis (90935), hospital inpatient care (99232) and hospital inpatient care (99222).
Where did Dr. Ronald Lee Mars go to medical school?
Dr. Mars graduated from St. Louis College of Physicians and Surgeons in 1972.
What drugs does Dr. Ronald Lee Mars prescribe most?
In 2024 Medicare Part D data, Dr. Mars' most prescribed drugs by claims were Prednisone, Furosemide and Losartan Potassium.
Has Dr. Ronald Lee Mars received payments from drug or device companies?
CMS Open Payments shows $1,050 in general payments to Dr. Mars from 9 companies from 2016 to 2025. The largest total came from Mallinckrodt Enterprises LLC.
How long has Dr. Ronald Lee Mars been practicing?
Dr. Mars graduated from medical school in 1972, 54 years ago.
Does Dr. Ronald Lee Mars do research?
Dmand AI links 1 publication to Dr. Mars.
Who does Dr. Ronald Lee Mars publish with?
Dr. Mars' most frequent co-authors are Elias Ivan Couto Barbosa, MD (1 shared paper).
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