DR. PAUL JOHN O'BRIEN MD
NPI 1992865588
Internal Medicine - Cardiovascular Disease in Annandale, VA

Q: What is Paul O'brien's NPI number?

The NPI number for Paul O'brien is 1992865588. It was assigned to this individual provider in the NPPES registry on December 12, 2006.

Q: What is Paul O'brien's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Paul O'brien was last updated on February 7, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since December 12, 2006PECOS EnrolledAccepts Medicare Assignment

91.89/100

CMS Quality Rating

6715 LITTLE RIVER TPKE STE 300, ANNANDALE, VA 22003(703) 751-6668(703) 642-1049 Get Directions Write a Review

NPPES record last updated: February 7, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 7, 2022, Feb 4, 2022, Oct 10, 2019 (3 updates tracked since 2019).

On this page

About Dr. Paul John O'brien Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. PAUL JOHN O'BRIEN MD (NPI 1992865588) is an individual cardiovascular disease provider in Annandale, Virginia, licensed in Virginia (0101055808) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS, is affiliated with Inova Alexandria Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1992865588

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. PAUL JOHN O'BRIENCredential: MD

Location Address6715 LITTLE RIVER TPKE STE 300Annandale, VA 22003-3546

Mailing Address6715 Little River Tpke Ste 300Annandale, VA 22003-3546 · (703) 751-6668 · Fax (703) 642-1049

Phone(703) 751-6668

Fax(703) 642-1049

Sole ProprietorNo

Medical School CMSUniversity Of Virginia School Of MedicineGraduated 1986

Enumeration DateDecember 12, 2006

Last NPPES UpdateFebruary 7, 20223 updates tracked since enumeration

NPPES CertifiedFebruary 7, 2022

✔ NPI 1992865588 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in VA · 0101055808

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

6715 LITTLE RIVER TPKE STE 300, Annandale, VA 22003

Open in Google Maps ↗

Secondary Practice Locations 2

Location 14320 Seminary RdAlexandria, VA 22304-1535 · Phone (703) 504-3000 · Fax (703) 504-3388

Location 23300 Gallows RdFalls Church, VA 22042-3300 · Phone (703) 504-3000 · Fax (703) 504-3388

Other Identifiers 3

Medicaid010062802VA

Other5164685Aetna

OtherJ4230001Carefirst

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.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

Dr. Paul John O'brien 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 ID5395737597

PECOS Enrollment IDI20040330001451

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 Reassignments

Medicare enrollment records show Paul O'brien reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cardiology Specialists Of Virginia

Same address

Cardiovascular Disease

6715 LITTLE RIVER TPKE STE 300
Annandale, VA 22003

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

NPI 1447311378 (703) 751-6668

Inova Health Care Services

3.6 mi

Internal Medicine

3300 GALLOWS RD, PHYSICIAN SERVICES
Falls Church, VA 22042

Reassigned Medicare billing, District of Columbia enrollment
2,618 clinicians in this Medicare group

NPI 1952320061 (703) 321-2627

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 15

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.

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.

1,390 services581 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

481 services448 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

290 services272 patients

Injection, regadenoson, 0.1 mg J2785

Regadenoson injection, 0.1 mg, is a medication used to help visualize the heart during a stress test. It works by increasing blood flow in the arteries of the heart. It's injected into a vein and is generally well-tolerated.

112 services28 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

63 services62 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

61 services61 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

56 services56 patients

Technetium tc-99m sestamibi, diagnostic, per study dose A9500

Technetium Tc-99m Sestamibi is a diagnostic test used to create images of your heart or breast tissues. It involves a safe radioactive substance injection that helps doctors to detect any abnormalities or changes in these tissues.

56 services56 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.

48 services48 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

40 services40 patients

Electrocardiogram (ecg) 2-day continuous with review by health care professional 93227

An Electrocardiogram (ECG) is a test that checks your heart's activity. The 2-day continuous ECG records your heart's rhythm non-stop for 48 hours. It helps to detect irregularities that may not occur during a shorter test. A healthcare professional will review the results to identify any issues.

24 services24 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.

24 services17 patients

Electrocardiogram (ecg) 2-day continuous 93225

An Electrocardiogram (ECG) 2-day continuous is a non-invasive test that records the electrical activity of your heart over 48 hours. It helps to detect irregular heart rhythms, heart disease, or other cardiac conditions. You wear a portable device that records heart activity as you go about your daily activities.

23 services23 patients

Heart rhythm recording of continous external ekg over 8-15 days 93246

A heart rhythm recording is a non-invasive procedure where a small device, attached externally, monitors your heart's electrical activity for 8-15 days. It helps detect irregular heart rhythms, assess heart rate, and guide treatment decisions. It's safe, painless, and can be done during normal daily activities.

20 services20 patients

Heart rhythm review and interpretation of continous external ekg over 8-15 days 93248

This service involves wearing a device for 8-15 days that continuously records your heart's electrical activity. It helps in identifying irregular heart rhythms. The recorded data is then reviewed and interpreted by a healthcare professional for any abnormalities.

17 services17 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Inova Alexandria Hospital

Acute Care Hospitals · Alexandria, VA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number490040

Location4320 Seminary RdAlexandria, VA 22304 · Alexandria City County

Emergency services Birthing friendly

Virginia Hospital Center

Acute Care Hospitals · Arlington, VA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number490050

Location1701 North George Mason DriveArlington, VA 22205 · Arlington County

Emergency services Birthing friendly

Inova Mount Vernon Hospital

Acute Care Hospitals · Alexandria, VA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number490122

Location2501 Parkers LaneAlexandria, VA 22306 · Fairfax County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22003 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

$80.66 typical visit price

range $21.40 – $158.88

Typical copayment $20.16 (range $5.35 – $39.72)

Most-billed visit code 99213

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

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

91.89/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

98.85

Promoting Interoperability

100

Improvement Activities

Cost

74.12

Reported Quality Measures

Advance Care Plan

67%878 patients3/55-star benchmark: 100%

Closing the Referral Loop: Receipt of Specialist Report

45%105 patients3/55-star benchmark: 87%

Controlling High Blood Pressure

80%600 patients4/55-star benchmark: 91%

Coronary Artery Disease (CAD): Beta-Blocker Therapy Prior Myocardial Infarction (MI) or Left Ventricular Systolic Dysfunction (LVEF <= 40%)

88%25 patients4/55-star benchmark: 99%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

86%125 patients1/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

99%2,819 patients4/55-star benchmark: 100%

e-Prescribing

94%1,190 patients2/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

22%1,113 patients1/55-star benchmark: 98%

Preventive Care and Screening: Screening for Depression and Follow-Up Plan

28%1,140 patients2/55-star benchmark: 97%

Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented

36%767 patients3/55-star benchmark: 61%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients screened: 22% · 883 patients

21%883 patients

Provide Patients Electronic Access to Their Health Information

92%610 patients4/55-star benchmark: 100%

Statin Therapy for the Prevention and Treatment of Cardiovascular Disease

89%703 patients4/55-star benchmark: 91%

Use of High-Risk Medications in Older Adults

Lower rates are better for this measure.

Patients appropriateDiagnosis: 0% · 854 patients

Patients totalRate: 0% · 854 patients

0%854 patients5/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CARDIOLOGY SPECIALISTS OF VIRGINIA

Internal Medicine (Cardiovascular Disease)

6715 LITTLE RIVER TPKE STE 300
ANNANDALE, VA 22003

Fairfax County (703) 751-6668

DR. LAURANCE W KAM MD

Internal Medicine (Cardiovascular Disease)

6715 LITTLE RIVER TPKE STE 300
ANNANDALE, VA 22003

Fairfax County (703) 751-6668

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 Paul O'brien's NPI number?

The NPI number for Paul O'brien is 1992865588. It was assigned to this individual provider in the NPPES registry on December 12, 2006.

Where is Paul O'brien located?

Paul O'brien practices at 6715 Little River Tpke Ste 300, Annandale, VA 22003. The listed phone number is (703) 751-6668.

What is Paul O'brien's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Paul O'brien enrolled in Medicare?

Yes. Paul O'brien 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 Paul O'brien's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Paul O'brien reassigns Medicare benefits to 2 organizations: Cardiology Specialists Of Virginia (Annandale, VA) and Inova Health Care Services (Falls Church, VA). 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 Paul O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Paul O'brien accept?

Health plans from Oscar Health list Paul O'brien 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 Paul O'brien affiliated with any hospitals?

According to CMS data, Paul O'brien is affiliated with Inova Alexandria Hospital, Virginia Hospital Center and Inova Mount Vernon Hospital.

When was this NPI record last updated?

The NPPES record for Paul O'brien was last updated on February 7, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.