RALPH MAROUN MD
NPI 1982157608
Internal Medicine - Pulmonary Disease in Reston, VA
About Ralph Maroun Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RALPH MAROUN MD (NPI 1982157608) is an individual pulmonary disease provider in Reston, Virginia, licensed in Tennessee (64455) and active in the NPI registry since July 2016. He is enrolled in Medicare PECOS, is affiliated with Roane Medical Center, and maintains a secondary practice location in Knoxville.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ralph Maroun Md 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.
Areas of Expertise CMS Part B claims 22
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Roane Medical Center
Acute Care Hospitals · Harriman, TNMethodist Medical Center Of Oak Ridge
Acute Care Hospitals · Oak Ridge, TNFort Sanders Regional Medical Center
Acute Care Hospitals · Knoxville, TNParkwest Medical Center
Acute Care Hospitals · Knoxville, TNReston Hospital Center
Acute Care Hospitals · Reston, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20190 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
RESTON, VA 20190
RESTON, VA 20190
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 Ralph Maroun's NPI number?
The NPI number for Ralph Maroun is 1982157608. It was assigned to this individual provider in the NPPES registry on July 29, 2016.
Where is Ralph Maroun located?
Ralph Maroun practices at 1850 Town Center Pkwy, Reston, VA 20190. The listed phone number is (703) 689-9000.
What is Ralph Maroun's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Ralph Maroun enrolled in Medicare?
Yes. Ralph Maroun 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.
What insurance does Ralph Maroun accept?
Health plans from Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Magnolia Health, Ambetter of Alabama and Ambetter of North Carolina and 3 other insurers list Ralph Maroun 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 Ralph Maroun affiliated with any hospitals?
According to CMS data, Ralph Maroun is affiliated with Roane Medical Center, Methodist Medical Center Of Oak Ridge, Fort Sanders Regional Medical Center, Parkwest Medical Center and Reston Hospital Center.
When was this NPI record last updated?
The NPPES record for Ralph Maroun was last updated on February 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.