DR. MARIA TSAO M.D.
NPI 1336257278
Psychiatry & Neurology - Psychiatry in Fairfax, VA

Q: What is Maria Tsao's NPI number?

The NPI number for Maria Tsao is 1336257278. It was assigned to this individual provider in the NPPES registry on August 29, 2006.

Q: What is Maria Tsao's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Maria Tsao was last updated on March 16, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.

Active since August 29, 2006PECOS EnrolledAccepts Medicare Assignment

8221 WILLOW OAKS CORPORATE DR, FAIRFAX, VA 22031(703) 207-7819 Get Directions Write a Review

NPPES record last updated: March 16, 2015. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Maria Tsao M.d. NPPES

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

DR. MARIA TSAO M.D. (NPI 1336257278) is an individual psychiatry provider in Fairfax, Virginia, licensed in Virginia (0101057741) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS and is a graduate of Georgetown University School Of Medicine (1994).

NPPES Registry Identity

NPI1336257278

Entity TypeIndividualFemale

Primary Taxonomy2084P0800X

Provider Legal NameDR. MARIA TSAOCredential: M.D.

Location Address8221 WILLOW OAKS CORPORATE DRFairfax, VA 22031-4512

Mailing Address8221 Willow Oaks Corporate DrFairfax, VA 22031-4512 · (703) 207-7819

Phone(703) 207-7819

Sole ProprietorNo

Medical School CMSGeorgetown University School Of MedicineGraduated 1994

Enumeration DateAugust 29, 2006

Last NPPES UpdateMarch 16, 2015

✔ NPI 1336257278 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in VA · 0101057741

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.

8221 WILLOW OAKS CORPORATE DR, Fairfax, VA 22031

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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. Maria Tsao M.d. 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 ID1557595915

PECOS Enrollment IDI20131018000339

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 Reassignment

Medicare enrollment records show Maria Tsao reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Fairfax County, Virginia

7.0 mi

Mental Health (Including Community Mental Health Center)

12011 GOVERNMENT CENTER PARKWAY, SUITE 836
Fairfax, VA 22035

Reassigned Medicare billing, District of Columbia enrollment
Medicare enrollment name: Director Of Finance-County Of Fairfax Va
383 clinicians in this Medicare group

NPI 1154356244 (703) 324-7000

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

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

252 services42 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

28 services19 patients

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 20

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

CONNIE LEE MD

Psychiatry & Neurology (Psychiatry)