Dr James Gavin Wallace-mercado, DNP, MSN, FNP-C - Medicare Nurse Practitioner in Annandale, VA

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Dr James Gavin Wallace-mercado, DNP, MSN, FNP-C is a medicare enrolled "Nurse Practitioner - Family" in Annandale, Virginia. His current practice location is 4540b John Marr Dr, Annandale, Virginia. You can reach out to his office (for appointments etc.) via phone at (703) 941-6757.

Dr James Gavin Wallace-mercado is licensed to practice in Virginia (license number 0024185745) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1023744406.

Contact Information

Dr James Gavin Wallace-mercado, DNP, MSN, FNP-C
4540b John Marr Dr,
Annandale, VA 22003-3308
(703) 941-6757
Not Available

Map and Direction




Provider's Profile

Full NameDr James Gavin Wallace-mercado
GenderMale
SpecialityNurse Practitioner - Family
Location4540b John Marr Dr, Annandale, Virginia
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1023744406
  • Provider Enumeration Date: 07/27/2022
  • Last Update Date: 07/30/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 0941643365
  • Enrollment ID: I20240213000950

Medical Identifiers

Medical identifiers for Dr James Gavin Wallace-mercado such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1023744406NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LF0000XNurse Practitioner - Family 0024185745 (Virginia)Primary
163WG0000XRegistered Nurse - General Practice 984504 (Texas)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. Dr James Gavin Wallace-mercado allows following entities to bill medicare on his behalf.
Entity NameNeighborhood Health
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1154674026
PECOS PAC ID: 7517853419
Enrollment ID: O20040707000325

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. Dr James Gavin Wallace-mercado 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
Dr James Gavin Wallace-mercado, DNP, MSN, FNP-C
4540 John Marr Dr Ste B,
Annandale, VA 22003-3308

Ph: (703) 941-6757		Dr James Gavin Wallace-mercado, DNP, MSN, FNP-C
4540b John Marr Dr,
Annandale, VA 22003-3308

Ph: (703) 941-6757

Reviews and Comments


Nurse Practitioner Nurses in Annandale, VA

Stacey L Merritt Baker, PNP
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Practice Location: 6923 Colburn Dr, Annandale, VA 22003
Phone: 571-730-0332    
Ms. Carmella Simmons, MS RN FNP-BC
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Medicare: Not Enrolled in Medicare
Practice Location: 7215 Jayhawk St, Annandale, VA 22003
Phone: 703-914-0222    
Rachel Schwartz,
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 7305 Beverly Manor Dr, Annandale, VA 22003
Phone: 703-869-2645    
Mrs. Mary Patricia White, NP
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 7611 Little River Tpke, Suite 108, Annandale, VA 22003
Phone: 703-658-7060    Fax: 703-658-3150
Brenda Holbrook, FNP-C
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 4405 Roberts Ave, Annandale, VA 22003
Phone: 703-914-1055    
Nvard Hovsepyan,
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 7132 Degroff Ct, Annandale, VA 22003
Phone: 571-265-5851    

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.