WILLIAM MCCLINTOCK MD
NPI 1518044858
Psychiatry & Neurology - Psychiatry in Fairfax, VA

Active since November 01, 2006PECOS EnrolledAccepts Medicare Assignment
3023 HAMAKER CT STE 300, FAIRFAX, VA 22031(703) 876-2788 Get Directions Write a Review

NPPES record last updated: March 31, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Mar 31, 2025, Sep 7, 2021 (2 updates tracked since 2021).

About William Mcclintock Md NPPES

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

WILLIAM MCCLINTOCK MD (NPI 1518044858) is an individual psychiatry provider in Fairfax, Virginia, licensed in Virginia (0101043365) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Virginia School Of Medicine (1972).

NPPES Registry Identity

NPI1518044858
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameWILLIAM MCCLINTOCKCredential: MD
Location Address3023 HAMAKER CT STE 300Fairfax, VA 22031-2240
Mailing Address3023 Hamaker Ct Ste 300Fairfax, VA 22031-2240 · (703) 876-2788
Sole ProprietorNo
Medical School CMSUniversity Of Virginia School Of MedicineGraduated 1972
Enumeration DateNovember 1, 2006
Last NPPES UpdateMarch 31, 20252 updates tracked since enumeration
NPPES CertifiedMarch 31, 2025
✔ NPI 1518044858 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in VA · 0101043365
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X · License MD20189 (DC)
3023 HAMAKER CT STE 300, Fairfax, VA 22031

Secondary Practice Locations 2

Location 1111 Michigan Ave NWWashington, DC 20010-2978 · Phone (202) 884-5000
Location 222505 Landmark Ct Ste 225Ashburn, VA 20148-6500 · Phone (703) 876-2788 · Fax (571) 665-6961

Accepted 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

William Mcclintock 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 ID6608856620
PECOS Enrollment IDI20040721000971, I20250407003208
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

2

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

Pediatrics
3023 HAMAKER CT, SUITE 200
Fairfax, VA 22031
  • Reassigned Medicare billing, District of Columbia and Virginia enrollments
  • 128 clinicians in this Medicare group
Urgent Care
100 MAPLE AVE E
Vienna, VA 22180
  • Reassigned Medicare billing, District of Columbia enrollment
  • 160 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22031 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
$194.86 typical visit price
range $65.18 – $194.86
Typical copayment $48.71 (range $16.29 – $48.71)
Most-billed visit code 99205
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 10

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

Allergy & Immunology
3023 HAMAKER CT STE 300
FAIRFAX, VA 22031
Pediatrics (Developmental - Behavioral Pediatrics)
3023 HAMAKER CT STE 300
FAIRFAX, VA 22031
Neurological Surgery
3023 HAMAKER CT STE 300
FAIRFAX, VA 22031
Nurse Practitioner (Pediatrics)
3023 HAMAKER CT STE 300
FAIRFAX, VA 22031
Nurse Practitioner (Pediatrics)
3023 HAMAKER CT STE 300
FAIRFAX, VA 22031
Psychologist (Clinical Child & Adolescent)
3023 HAMAKER CT STE 300
FAIRFAX, VA 22031
Pediatrics
3023 HAMAKER CT STE 300
FAIRFAX, VA 22031
Pediatrics (Pediatric Allergy/Immunology)
3023 HAMAKER CT STE 300
FAIRFAX, VA 22031

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 William Mcclintock's NPI number?

The NPI number for William Mcclintock is 1518044858. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Where is William Mcclintock located?

William Mcclintock practices at 3023 Hamaker Ct Ste 300, Fairfax, VA 22031. The listed phone number is (703) 876-2788.

What is William Mcclintock's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is William Mcclintock enrolled in Medicare?

Yes. William Mcclintock 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 William Mcclintock's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Mcclintock reassigns Medicare benefits to 2 organizations: Pediatric Specialists Of Virginia, LLC (Fairfax, VA) and Inova Health Care Services (Vienna, 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 William Mcclintock's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Mcclintock accept?

Health plans from Oscar Health list William Mcclintock 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.

When was this NPI record last updated?

The NPPES record for William Mcclintock was last updated on March 31, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.