MR. RONALD L LEWIS M.D.
NPI 1790751741
Internal Medicine - Cardiovascular Disease in Newark, DE
About Mr. Ronald L Lewis M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. RONALD L LEWIS M.D. (NPI 1790751741) is an individual cardiovascular disease provider in Newark, Delaware, licensed in Delaware (C20003088) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Union Hospital Of Cecil County, and is a graduate of Philadelphia College Of Osteopathic Medicine (1981).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mr. Ronald L Lewis M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Ronald Lewis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Newark, DE 19713
- Reassigned Medicare billing, Delaware and Pennsylvania enrollments
- Also billed through NPI 1245674993 (Delaware), NPI 1609409861 (Pennsylvania)
- 1,531 clinicians in this Medicare group
Chadds Ford, PA 19317
- Reassigned Medicare billing, Pennsylvania enrollment
- 217 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 24
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Union Hospital Of Cecil County
Acute Care Hospitals · Elkton, MDChester County Hospital
Acute Care Hospitals · West Chester, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19702 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEWARK, DE 19702
NEWARK, DE 19702
NEWARK, DE 19702
NEWARK, DE 19702
NEWARK, DE 19702
NEWARK, DE 19702
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Ronald Lewis's NPI number?
The NPI number for Ronald Lewis is 1790751741. It was assigned to this individual provider in the NPPES registry on February 28, 2006.
Where is Ronald Lewis located?
Ronald Lewis practices at 252 Chapman Rd Suite 150, Newark, DE 19702. The listed phone number is (302) 623-1929.
What is Ronald Lewis's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Ronald Lewis enrolled in Medicare?
Yes. Ronald Lewis is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ronald Lewis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ronald Lewis reassigns Medicare benefits to 2 organizations: Christiana Care Health Services Inc. (Newark, DE) and Christiana Care Pennsylvania Inc (Chadds Ford, PA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ronald Lewis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ronald Lewis accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and AmeriHealth Caritas Next and 1 other insurer list Ronald Lewis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Ronald Lewis affiliated with any hospitals?
According to CMS data, Ronald Lewis is affiliated with Union Hospital Of Cecil County and Chester County Hospital.
When was this NPI record last updated?
The NPPES record for Ronald Lewis was last updated on November 8, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.