RALPH MAROUN MD
NPI 1982157608
Internal Medicine - Pulmonary Disease in Reston, VA

Q: 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.

Q: What is Ralph Maroun's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Q: 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 8 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.

Active since July 29, 2016PECOS EnrolledAccepts Medicare Assignment

1850 TOWN CENTER PKWY, RESTON, VA 20190(703) 689-9000 Get Directions Write a Review

NPPES record last updated: February 5, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 5, 2026, Feb 19, 2025, Dec 8, 2023 and 1 more (4 updates tracked since 2023).

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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

NPI1982157608

Entity TypeIndividualMale

Primary Taxonomy207RP1001X

Provider Legal NameRALPH MAROUNCredential: MD

Location Address1850 TOWN CENTER PKWYReston, VA 20190-3204

Mailing AddressPo Box 207830Dallas, TX 75320-7830 · (888) 412-2649

Phone(703) 689-9000

Sole ProprietorNo

Medical School CMSOtherGraduated 2012

Enumeration DateJuly 29, 2016

Last NPPES UpdateFebruary 5, 20264 updates tracked since enumeration

NPPES CertifiedFebruary 5, 2026

✔ NPI 1982157608 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RP1001X

License✔ Licensed in TN · 64455

Definition

An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 0101287781 (VA)

1850 TOWN CENTER PKWY, Reston, VA 20190

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Secondary Practice Location 1

Location 16473 Kingston Pike Ste 6473Knoxville, TN 37919-4832 · Phone (888) 412-2649

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cigna Healthcare.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

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.

PECOS PAC ID9335478056

PECOS Enrollment IDI20260107002743

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Ralph Maroun reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Intensive Care Consortium Inc

910 mi

Specialist

20900 BISCAYNE BLVD
Aventura, FL 33180

Reassigned Medicare billing, District of Columbia enrollment
16 clinicians in this Medicare group

NPI 1629019062 (561) 997-0821

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 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.

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

211 services96 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

158 services78 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

122 services89 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

117 services63 patients

Test to examine how well the lungs exchange gases 94729

This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.

82 services81 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

66 services66 patients

Test to measure expiratory airflow and volume 94010

This test, known as spirometry, assesses how well your lungs work. It measures how much air you can inhale, how much you can exhale and how quickly you can exhale. It's non-invasive and helps diagnose conditions like asthma or COPD.

65 services64 patients

Test to determine lung volumes using gas dilution or washout 94727

This test measures lung volumes by either diluting or washing out a known amount of gas in your lungs. You'll breathe in a harmless gas, then exhale. The exhaled air is analyzed to assess your lung capacity and function.

62 services61 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

45 services40 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

44 services39 patients

Telehealth consultation, critical care, initial , physicians typically spend 60 minutes communicating with the patient and providers via telehealth G0508

A telehealth consultation for critical care is a virtual meeting with a physician, typically lasting 60 minutes. Here, the doctor assesses your health condition, provides guidance, and communicates with other care providers, all through digital platforms. It's a safe, convenient way to receive critical care.

34 services34 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

33 services27 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

28 services24 patients

Telehealth consultation, critical care, subsequent, physicians typically spend 50 minutes communicating with the patient and providers via telehealth G0509

A telehealth consultation for critical care is a virtual meeting with a doctor for ongoing critical health issues. It involves a 50-minute session where the physician connects with the patient and other healthcare providers to discuss and manage the patient's condition. This method ensures safe, convenient care.

23 services16 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

22 services22 patients

Test to measure expiratory airflow and volume changes before and after medication administration 94060

This procedure measures how air flows in and out of your lungs. It's done before and after medication to see if the treatment improves your breathing. It's a simple, non-invasive test that involves breathing into a device called a spirometer.

21 services20 patients

Test to determine lung volumes using sensors 94726

This test, called spirometry, measures lung capacity using sensors. You breathe into a mouthpiece attached to a device that records the amount and rate of air you inhale and exhale. It helps diagnose and monitor lung conditions.

21 services21 patients

Telehealth consultation, emergency department or initial inpatient, typically 70 minutes or more communicating with the patient via telehealth G0427

A Telehealth consultation is a virtual visit where you can discuss your health concerns with a healthcare provider from the comfort of your home. In this process, which typically lasts 70 minutes or more, the provider can assess, diagnose, and offer treatment options for your condition using communication technology.

21 services21 patients

Critical care, each additional 30 minutes 99292

Critical care refers to special attention given to patients facing life-threatening conditions. Each additional 30 minutes indicates the extension of this specialized care. This might include close monitoring, medication adjustments, and immediate interventions as needed.

19 services18 patients

Evaluation of use of breathing device 94664

The evaluation of a breathing device involves checking how effectively you're using it to manage your respiratory condition. It assesses the device's fit, your comfort, and your technique to ensure optimal results.

17 services16 patients

Insertion of non-tunneled central venous tube for infusion (5 years or older) 36556

This procedure involves placing a thin tube into a large vein, usually in the neck or chest, to administer medication or fluids. It's done under local anesthesia to minimize discomfort. It's a standard, safe procedure for individuals aged 5 and above.

13 services11 patients

Ultrasonic guidance for blood vessel access 76937

Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.

12 services12 patients

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, TN

5/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number440031

Location8045 Roane Medical Center DriveHarriman, TN 37748 · Roane County

Emergency services

Methodist Medical Center Of Oak Ridge

Acute Care Hospitals · Oak Ridge, TN

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number440034

Location990 Oak Ridge Turnpike Box 529Oak Ridge, TN 37830 · Anderson County

Emergency services Birthing friendly

Fort Loudoun Medical Center

Acute Care Hospitals · Lenoir City, TN

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number440110

Location550 Fort Loudon Medical Center DrLenoir City, TN 37772 · Loudon County

Emergency services

Parkwest Medical Center

Acute Care Hospitals · Knoxville, TN

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number440173

Location9352 Park West BlvdKnoxville, TN 37923 · Knox County

Emergency services Birthing friendly

Reston Hospital Center

Acute Care Hospitals · Reston, VA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number490107

Location1850 Town Center ParkwayReston, VA 20190 · Fairfax County

Emergency services

Physician 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.

New Patient

$147.85 typical visit price

range $65.18 – $194.86

Typical copayment $36.96 (range $16.29 – $48.71)

Most-billed visit code 99204

Established Patient

$113.72 typical visit price

range $21.40 – $158.88

Typical copayment $28.43 (range $5.35 – $39.72)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MEDSTAR MEDICAL GROUP II LLC

General Practice

1850 TOWN CENTER PKWY
RESTON, VA 20190

Fairfax County (202) 877-7685

DR. DAVID E KARDON MD

Pathology (Anatomic Pathology & Clinical Pathology)

1850 TOWN CENTER PKWY
RESTON, VA 20190

Fairfax County (703) 689-9093

DR. ANDREW HARRIS GORDON M.D., PH.D.

Physical Medicine & Rehabilitation

1850 TOWN CENTER PKWY
RESTON, VA 20190

Fairfax County (703) 949-9660

BERNARD JAMES GAMIAO

Occupational Therapist

1850 TOWN CENTER PKWY
RESTON, VA 20190

Fairfax County (703) 689-9000

SEON H LEE MD

Emergency Medicine

1850 TOWN CENTER PKWY, RESTON HOSPITAL CENTER
RESTON, VA 20190

Fairfax County (703) 689-9037

MRS. DIANE D ZHAO MD

Physical Medicine & Rehabilitation

1850 TOWN CENTER PKWY
RESTON, VA 20190

Fairfax County (703) 689-9000

DR. JAMES L TORRENS MD

Anesthesiology

1850 TOWN CENTER PKWY, RESTON HOSPITAL CENTER
RESTON, VA 20190

Fairfax County (703) 471-0919

JOHN M YOUNG CRNA

Nurse Anesthetist, Certified Registered

1850 TOWN CENTER PKWY
RESTON, VA 20190

Fairfax County (703) 471-0919

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.

Which organization bills Medicare for Ralph Maroun's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ralph Maroun reassigns Medicare benefits to Intensive Care Consortium Inc (Aventura, FL). The 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 Ralph Maroun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ralph Maroun accept?

Health plans from Cigna Healthcare 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 Loudoun 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 8 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.