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WILLIAM D GAILLARD
NPI 1295754869
Psychiatry & Neurology - Psychiatry in Washington, DC

Active since July 18, 2006PECOS EnrolledAccepts Medicare Assignment
3800 RESERVOIR RD NW, WASHINGTON, DC 20007(202) 444-8525 Get Directions Write a Review

NPPES record last updated: July 19, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About William D Gaillard NPPES

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

WILLIAM D GAILLARD (NPI 1295754869) is an individual psychiatry provider in Washington, District Of Columbia, licensed in Virginia (0101053185) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Falls Church, and is a graduate of Yale University School Of Medicine (1985).

NPPES Registry Identity

NPI1295754869
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameWILLIAM D GAILLARD
Location Address3800 RESERVOIR RD NWWashington, DC 20007-2113
Mailing AddressPo Box 631856Baltimore, MD 21263-1856
Phone(202) 444-8525
Sole ProprietorNo
Medical School CMSYale University School Of MedicineGraduated 1985
Enumeration DateJuly 18, 2006
Last NPPES UpdateJuly 19, 2021
NPPES CertifiedJuly 19, 2021
✔ NPI 1295754869 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 · 0101053185
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 ListedPediatrics · Neurodevelopmental DisabilitiesTaxonomy 2080P0008X · License 19882 (DC)
3800 RESERVOIR RD NW, Washington, DC 20007
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Secondary Practice Location 1

Location 13300 Gallows RdFalls Church, VA 22042-3307 · Phone (703) 776-6558 · Fax (703) 776-4323

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

William D Gaillard 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 ID9335144989
PECOS Enrollment IDI20061003000604
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20007 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 20

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

DR. KAUSTUBH SUBHASH YADWADKAR M.D.
Radiology (Diagnostic Radiology)
3800 RESERVOIR RD NW, CG201
WASHINGTON, DC 20007
District of Columbia (304) 206-7595
FRED MO MD
Orthopaedic Surgery (Orthopaedic Surgery of the Spine)
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (202) 444-8766
SEBLE YIRGA
Nurse Practitioner (Family)
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (202) 444-7265
ARLETTE THOMPSON-PILE
Physical Therapy Assistant
3800 RESERVOIR RD NW, PHYSICAL MEDICINE AND REHBAILITATION DEPARTMENT
WASHINGTON, DC 20007
District of Columbia (202) 444-3689
JENNA ELIZABETH HOROWITZ
Physician Assistant (Surgical)
3800 RESERVOIR RD NW, NEUROSURGERY DEPARTMENT
WASHINGTON, DC 20007
District of Columbia (202) 444-2000
HALEY SWANSON FOSTER M.D.
Radiology (Vascular & Interventional Radiology)
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (202) 444-5022
SOPHIA RIZVI MD
Radiology (Radiation Oncology)
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (202) 444-2000
CLAIRE DALBY MD
Student in an Organized Health Care Education/Training Program
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (202) 444-7106

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 Gaillard's NPI number?

The NPI number for William Gaillard is 1295754869. It was assigned to this individual provider in the NPPES registry on July 18, 2006.

Where is William Gaillard located?

William Gaillard practices at 3800 Reservoir Rd NW, Washington, DC 20007. The listed phone number is (202) 444-8525.

What is William Gaillard's specialty?

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

Is William Gaillard enrolled in Medicare?

Yes. William Gaillard 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.

When was this NPI record last updated?

The NPPES record for William Gaillard was last updated on July 19, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.