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DR. BRIAN JOSEPH MASTERSON MD, MPH
NPI 1225062383
Psychiatry & Neurology - Psychiatry in Fairfax, VA

Active since July 11, 2006PECOS EnrolledAccepts Medicare Assignment
81.28/100
CMS Quality Rating
3580 JOSEPH SIEWICK DR STE 306, FAIRFAX, VA 22033(703) 391-4520(703) 391-4521 Get Directions Write a Review

NPPES record last updated: August 19, 2024. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Aug 19, 2024, May 15, 2020 (2 updates tracked since 2020).

About Dr. Brian Joseph Masterson Md, Mph NPPES

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

DR. BRIAN JOSEPH MASTERSON MD, MPH (NPI 1225062383) is an individual psychiatry provider in Fairfax, Virginia, licensed in Iowa (29293) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Holy Cross Germantown Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1225062383
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. BRIAN JOSEPH MASTERSONCredential: MD, MPH
Location Address3580 JOSEPH SIEWICK DR STE 306Fairfax, VA 22033-1764
Mailing Address3580 Joseph Siewick Dr Ste 306Fairfax, VA 22033-1764 · (703) 391-4520 · Fax (703) 391-4521
Phone(703) 391-4520
Fax(703) 391-4521
Sole ProprietorYes
Medical School CMSHarvard Medical SchoolGraduated 1988
Enumeration DateJuly 11, 2006
Last NPPES UpdateAugust 19, 20242 updates tracked since enumeration
NPPES CertifiedAugust 19, 2024
✔ NPI 1225062383 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 IA · 29293
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 ListedInternal MedicineTaxonomy 207R00000X · License 29293 (IA)
3580 JOSEPH SIEWICK DR STE 306, Fairfax, VA 22033
Open in Google Maps ↗

Other Names 1

Professional Name (2)Dr. Brian Joseph Masterson M.d.

Secondary Practice Locations 2

Location 17945 MacArthur Blvd Ste 214Cabin John, MD 20818-1634 · Phone (301) 987-7284 · Fax (301) 830-8185
Location 219801 Observation DrGermantown, MD 20876-4070 · Phone (202) 360-4787 · Fax (202) 360-4787

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.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

Dr. Brian Joseph Masterson Md, Mph 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 ID4789825746
PECOS Enrollment IDI20130802000552, I20170918002585
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 Brian Masterson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Inova Health Care Services
6.3 mi
Urgent Care
100 MAPLE AVE E
Vienna, VA 22180
  • Reassigned Medicare billing, Virginia and District of Columbia enrollments
  • Also billed through NPI 1669511051 (District of Columbia), NPI 1952320061 (District of Columbia)
  • 2,379 clinicians in this Medicare group
NPI 1275886418 (703) 938-5300
Axis Healthcare Group
20 mi
Psychiatry
8040 GEORGIA AVE STE 170
Silver Spring, MD 20910
  • Reassigned Medicare billing, District of Columbia and Maryland enrollments
  • 128 clinicians in this Medicare group
NPI 1326295098 (202) 360-4787

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

Hospital Affiliations CMS Care Compare

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

Holy Cross Germantown Hospital

Acute Care Hospitals · Germantown, MD
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210065
Location19801 Observation DriveGermantown, MD 20876 · Montgomery County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22033 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

81.28/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality70.77
Promoting Interoperability100
Improvement Activities40
Cost66.84

Other Providers at the Same Location NPPES 5

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

MICHAEL KIM
Internal Medicine
3580 JOSEPH SIEWICK DR STE 306
FAIRFAX, VA 22033
Fairfax County (703) 391-4520
SANDY F IBRAHIM MD
Family Medicine
3580 JOSEPH SIEWICK DR STE 306
FAIRFAX, VA 22033
Fairfax County (703) 391-4520
SHEILA HAUTBOIS PA-C
Physician Assistant
3580 JOSEPH SIEWICK DR STE 306
FAIRFAX, VA 22033
Fairfax County (703) 391-4520
TUCKER J LANDRY LCSW
Social Worker (Clinical)
3580 JOSEPH SIEWICK DR STE 306
FAIRFAX, VA 22033
Fairfax County (703) 391-4520
OLUWASEYI OLUMIDE AJAYI M.D.
Internal Medicine
3580 JOSEPH SIEWICK DR STE 306
FAIRFAX, VA 22033
Fairfax County (703) 391-4520

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 Brian Masterson's NPI number?

The NPI number for Brian Masterson is 1225062383. It was assigned to this individual provider in the NPPES registry on July 11, 2006. The provider is also known as Dr. Brian Joseph Masterson M.D..

Where is Brian Masterson located?

Brian Masterson practices at 3580 Joseph Siewick Dr Ste 306, Fairfax, VA 22033. The listed phone number is (703) 391-4520.

What is Brian Masterson's specialty?

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

Is Brian Masterson enrolled in Medicare?

Yes. Brian Masterson 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 Brian Masterson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Brian Masterson reassigns Medicare benefits to 2 organizations: Inova Health Care Services (Vienna, VA) and Axis Healthcare Group (Silver Spring, MD). 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 Brian Masterson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Brian Masterson accept?

Health plans from Oscar Health list Brian Masterson 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.

Is Brian Masterson affiliated with any hospitals?

According to CMS data, Brian Masterson is affiliated with Holy Cross Germantown Hospital.

When was this NPI record last updated?

The NPPES record for Brian Masterson was last updated on August 19, 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.