Alexis Sienna Halyard, - Medicare Family Medicine in Annandale, VA

  1. Home
  2. Family Medicine
  3. VA
  4. Annandale
Alexis Sienna Halyard, is a medicare enrolled "Family Medicine" physician in Annandale, Virginia. Her current practice location is 7617 Little River Tpke Ste 850, Annandale, Virginia. You can reach out to her office (for appointments etc.) via phone at (571) 665-6636.

Alexis Sienna Halyard is licensed to practice in Virginia (license number 0101279272) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1144742958.

Contact Information

Alexis Sienna Halyard,
7617 Little River Tpke Ste 850,
Annandale, VA 22003-2673
(571) 665-6636
Not Available

Map and Direction




Physician's Profile

Full NameAlexis Sienna Halyard
GenderFemale
SpecialityFamily Medicine
Location7617 Little River Tpke Ste 850, Annandale, Virginia
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1144742958
  • Provider Enumeration Date: 07/13/2017
  • Last Update Date: 08/22/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 9436580339
  • Enrollment ID: I20231006000400

Medical Identifiers

Medical identifiers for Alexis Sienna Halyard such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1144742958NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 0101279272 (Virginia)Primary
207Q00000XFamily Medicine 2022-03066 (North Carolina)Secondary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Alexis Sienna Halyard allows following entities to bill medicare on her behalf.
Entity NameInova Health Care Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952320061
PECOS PAC ID: 2466351093
Enrollment ID: O20080806000696

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Alexis Sienna Halyard is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Alexis Sienna Halyard,
7617 Little River Tpke Ste 850,
Annandale, VA 22003-2673

Ph: (571) 665-6636		Alexis Sienna Halyard,
7617 Little River Tpke Ste 850,
Annandale, VA 22003-2673

Ph: (571) 665-6636

Reviews and Comments


Family Medicine Doctors in Annandale, VA

Van-anh Thi Nguyen, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 7432 Little River Tpke, Annandale, VA 22003
Phone: 703-658-7060    Fax: 703-658-3150
Seetha M Durbhakula, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 7617 Little River Turnpike, Suite 600, Annandale, VA 22003
Phone: 703-256-5680    Fax: 703-658-1684
Nelly Gonzalez, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 7617 Little River Tpk, Suite 600, Annandale, VA 22003
Phone: 703-256-5680    Fax: 703-658-1684
Dr. Mark George Janczewski, MD, MPH
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 3438 Holly Rd, Annandale, VA 22003
Phone: 703-698-5811    
Dr. Annick Stam-cheatham, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 7617 Little River Tpke Ste 710, Annandale, VA 22003
Phone: 703-941-0267    Fax: 703-941-2018
Dr. Mercedes Quintos-gomez, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 7617 Little River Tpke, Ste 710, Annandale, VA 22003
Phone: 703-941-1732    Fax: 703-941-2018

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.