1. Home
  2. Directory
  3. Virginia
  4. Reston
  5. Physician Assistant
  6. NPI Profile

EMMA MARIA TIERNEY
NPI 1437929858
Physician Assistant in Reston, VA

Active since January 05, 2024PECOS EnrolledAccepts Medicare Assignment
1850 TOWN CENTER PKWY, RESTON, VA 20190(703) 810-5202 Get Directions Write a Review

NPPES record last updated: April 30, 2024. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 30, 2024, Jan 5, 2024 (2 updates tracked since 2024).

About Emma Maria Tierney NPPES

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

EMMA MARIA TIERNEY (NPI 1437929858) is an individual physician assistant in Reston, Virginia and active in the NPI registry since January 2024. She is enrolled in Medicare PECOS, is affiliated with Reston Hospital Center, and is a graduate of Other (2024).

NPPES Registry Identity

NPI1437929858
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameEMMA MARIA TIERNEY
Location Address1850 TOWN CENTER PKWYReston, VA 20190-3204
Mailing Address650 Ad Hoc RdGreat Falls, VA 22066-2629 · (703) 342-2932
Phone(703) 810-5202
Sole ProprietorYes
Medical School CMSOtherGraduated 2024
Enumeration DateJanuary 5, 2024
Last NPPES UpdateApril 30, 20242 updates tracked since enumeration
NPPES CertifiedApril 30, 2024
✔ NPI 1437929858 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
1850 TOWN CENTER PKWY, Reston, VA 20190
Open in Google Maps ↗

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

Emma Maria Tierney 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 ID5698212330
PECOS Enrollment IDI20240731001123
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.

Areas of Expertise CMS Part B claims 2

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.

X-ray of knee, 3 views 73562
An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.
28 services27 patients
X-ray of hip, 2-3 views 73502
An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.
16 services16 patients

Hospital Affiliations CMS Care Compare

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

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
$100.31 typical visit price
range $65.18 – $194.86
Typical copayment $25.07 (range $16.29 – $48.71)
Most-billed visit code 99203
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.

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 Emma Tierney's NPI number?

The NPI number for Emma Tierney is 1437929858. It was assigned to this individual provider in the NPPES registry on January 5, 2024.

Where is Emma Tierney located?

Emma Tierney practices at 1850 Town Center Pkwy, Reston, VA 20190. The listed phone number is (703) 810-5202.

What is Emma Tierney's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Emma Tierney enrolled in Medicare?

Yes. Emma Tierney 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.

Is Emma Tierney affiliated with any hospitals?

According to CMS data, Emma Tierney is affiliated with Reston Hospital Center.

When was this NPI record last updated?

The NPPES record for Emma Tierney was last updated on April 30, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.