Dr. Ronald L. Lewis, MD
- Medicare services, 2024
- 1,743
- Medicare patients, 2024
- 1,238
- Part D claims, 2024
- 5,758
- Hospital affiliations
- 3
- Industry payments
- $1,012
- Practice address
- 501 W 14th St, Wilmington, DE 19801
- Practice phone
- Call (302) 733-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
ChristianaCare Wilmington Hospital
Wilmington, Delaware
Find Dr. Lewis' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Ronald L. Lewis is a cardiologist in Wilmington, Delaware
Dr. Lewis practices at ChristianaCare Wilmington Hospital in Wilmington, Delaware.
Dr. Lewis' NPI, 1790751741, was assigned on February 28, 2006. Dr. Lewis graduated from Philadelphia College of Osteopathic Medicine in 1981. Dr. Lewis holds Delaware license C20003088.
- NPI
- 1790751741NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4284653502
- NPI enumeration date
- February 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (302) 733-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 71
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ronald L. Lewis practices at ChristianaCare Wilmington Hospital in Wilmington, Delaware
Dr. Lewis' primary practice is ChristianaCare Wilmington Hospital, at 501 W 14th St, Wilmington, DE 19801 in New Castle County. The practice phone is (302) 733-1000.
- ChristianaCare Wilmington Hospital501 W 14th St, Wilmington, DE 19801 · New Castle CountyPhone(302) 733-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ronald L. Lewis is affiliated with 5 sites of care and 2 medical groups
Dr. Lewis' primary practice is ChristianaCare Wilmington Hospital in Wilmington, Delaware. Dr. Lewis is also affiliated with Christiana Hospital. The medical group on file is ChristianaCare. Dmand AI also links Dr. Lewis to 2 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ronald L. Lewis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lewis practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ChristianaCare Wilmington Hospital | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ronald L. Lewis is one of 106 cardiologists in Delaware
Cardiovascular disease is Dr. Lewis' primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Lewis is licensed in Delaware.
Specialties and state licenses
- Cardiovascular disease, DelawarePrimary
Cardiologists near Dr. Lewis
Counts of cardiologists 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 L. Lewis billed Medicare for 1,743 services in 2024
CMS data shows 1,743 Medicare services from Dr. Lewis across 20 procedure codes in 2024, for 1,238 Medicare patients. Medicare paid $82,731 for them.
Dr. Lewis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9142024: 9031%
- Tests and treatments
- 2023: 1,1782024: 82430%
- Imaging
- 2023: 122024: 1633%
Where Dr. Lewis' Medicare services took place, 2024
- In an office52230%
- In a facility1,22170%
Dr. Lewis compared with the Delaware median for cardiologists, 2024
- Dr. Lewis
- Delaware median
- Medicare services
- 1,743vs 2,79238% below
- Medicare patients
- 1,238vs 1,47816% below
- Part D claims
- 5,511vs 2,3302.4 times
Medians across 103 cardiologists in Delaware with Dmand AI profiles that report each measure.
Dr. Lewis' 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. Lewis and other cardiologists in Delaware.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ronald L. Lewis treated 1,238 Medicare patients in 2024, average age 76
CMS counts 1,238 Medicare patients who saw Dr. Lewis in 2024. The largest group is 75 to 84, with 496 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.64, 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. Lewis' median patient age at 72, with 47% women.
Dr. Lewis' Medicare patients by age, 2024
Dr. Lewis' Medicare patients by sex, 2024
- Women65253%
- Men58647%
Chronic conditions among Dr. Lewis' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Ischemic heart disease46%
- Diabetes40%
- Atrial fibrillation39%
- Chronic kidney disease38%
- Heart failure30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lewis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women47%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ronald L. Lewis wrote 5,758 Medicare Part D claims in 2024
In 2024, Dr. Lewis wrote 5,758 Medicare Part D claims for 792 patients. 86% of them were for generic drugs. CMS names the drug for 5,511 of them, across 58 drugs with 11 or more claims each, at $1,032,188 in total drug cost. In 2023, CMS named 6,244 claims across 58 drugs.
Dr. Lewis' Part D claims by kind of drug, 2024
- Generic4,939 claims86%
- Brand-name819 claims14%
Dr. Lewis' 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. Lewis' Part D claims, 2024
- Antibiotics0%19 of 5,758 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: 6,2442024: 5,51112%
Drugs named by CMS: 58 in 2024, 58 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 L. Lewis offers telehealth to Medicare patients
Dr. Lewis accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Lewis as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ronald L. Lewis received $1,012 in industry payments from 2016 to 2025
CMS Open Payments shows 58 general payments to Dr. Lewis from 17 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novartis Pharmaceuticals Corporation paid the most, $281.
General payments to Dr. Lewis by program year, 2016 to 2025
Companies that paid Dr. Lewis 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 L. Lewis graduated from Philadelphia College of Osteopathic Medicine
Dr. Lewis graduated from Philadelphia College of Osteopathic Medicine in 1981.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ronald L. Lewis'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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 L. Lewis
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 L. Lewis' NPI number?
Dr. Ronald L. Lewis' NPI number is 1790751741. It was assigned on February 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ronald L. Lewis?
Dr. Ronald L. Lewis is a cardiologist in Wilmington, Delaware. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Ronald L. Lewis practice?
Dr. Lewis practices at 501 W 14th St, Wilmington, DE 19801. Dr. Lewis' primary practice is ChristianaCare Wilmington Hospital in Wilmington, Delaware. Dmand AI also links Dr. Lewis to 2 hospitals, 1 group practice or clinic and 1 medical group.
What is Dr. Ronald L. Lewis' office phone number?
The practice phone on file for Dr. Lewis is (302) 733-1000.
What is Dr. Ronald L. Lewis' medical license number?
Dr. Lewis holds Delaware license C20003088.
Which hospitals is Dr. Ronald L. Lewis affiliated with?
Dr. Lewis is affiliated with Christiana Hospital. Dmand AI links Dr. Lewis to 2 more hospitals.
What medical group is Dr. Ronald L. Lewis part of?
Dr. Lewis is linked to ChristianaCare. Dmand AI links Dr. Lewis to 1 more medical group.
Does Dr. Ronald L. Lewis accept Medicare?
Yes. CMS data shows Dr. Lewis billed Medicare for 1,743 services in 2024, and Dr. Lewis accepts Medicare assignment.
Does Dr. Ronald L. Lewis offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Lewis as offering telehealth services.
How many Medicare patients does Dr. Ronald L. Lewis see?
CMS counts 1,238 Medicare patients who saw Dr. Lewis in 2024, with an average age of 76.
Show 5 more questionsShow fewer questions
What services does Dr. Ronald L. Lewis bill to Medicare?
In 2024, Dr. Lewis' most billed Medicare services were office visit, established patient (99214), heart test or procedure (93306) and heart test or procedure (93010).
Where did Dr. Ronald L. Lewis go to medical school?
Dr. Lewis graduated from Philadelphia College of Osteopathic Medicine in 1981.
What drugs does Dr. Ronald L. Lewis prescribe most?
In 2024 Medicare Part D data, Dr. Lewis' most prescribed drugs by claims were Atorvastatin Calcium, Metoprolol Succinate and Rosuvastatin Calcium.
Has Dr. Ronald L. Lewis received payments from drug or device companies?
CMS Open Payments shows $1,012 in general payments to Dr. Lewis from 17 companies from 2016 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Ronald L. Lewis been practicing?
Dr. Lewis graduated from medical school in 1981, 45 years ago.
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