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DR. SIRINAN TAZEN M.D.
NPI 1649473794
Psychiatry & Neurology - Neurology in Arlington, VA

Active since June 07, 2007PECOS EnrolledAccepts Medicare Assignment
1635 N GEORGE MASON DR STE 420, ARLINGTON, VA 22205(703) 536-4000 Get Directions Write a Review

NPPES record last updated: February 22, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 11, 2023, May 12, 2022 (2 updates tracked since 2022).

About Dr. Sirinan Tazen M.d. NPPES

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

DR. SIRINAN TAZEN M.D. (NPI 1649473794) is an individual neurology provider in Arlington, Virginia, licensed in Virginia (0101273131) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS, is affiliated with Virginia Hospital Center, and is a graduate of Other (2006).

NPPES Registry Identity

NPI1649473794
Entity TypeIndividualFemale
Primary Taxonomy2084N0400X
Provider Legal NameDR. SIRINAN TAZENCredential: M.D.
Location Address1635 N GEORGE MASON DR STE 420Arlington, VA 22205-3617
Mailing Address1635 N George Mason Dr Ste 420Arlington, VA 22205-3617 · (703) 536-4000 · Fax (703) 527-4339
Phone(703) 536-4000
Sole ProprietorNo
Medical School CMSOtherGraduated 2006
Enumeration DateJune 7, 2007
Last NPPES UpdateFebruary 22, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 22, 2026
✔ NPI 1649473794 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in VA · 0101273131
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
1635 N GEORGE MASON DR STE 420, Arlington, VA 22205
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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

Dr. Sirinan Tazen 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 ID547423584
PECOS Enrollment IDI20220816002775
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.

Areas of Expertise CMS Part B claims 6

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.

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
127 services127 patients
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.
110 services77 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
63 services56 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
62 services62 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
44 services40 patients
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
44 services28 patients

Hospital Affiliations CMS Care Compare

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

Virginia Hospital Center

Acute Care Hospitals · Arlington, VA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490050
Location1701 North George Mason DriveArlington, VA 22205 · Arlington County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22205 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
$147.85 typical visit price
range $65.18 – $194.86
Typical copayment $36.96 (range $16.29 – $48.71)
Most-billed visit code 99204
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
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

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

ELAHE BORDBAR MD
Psychiatry & Neurology (Neurology)
1635 N GEORGE MASON DR STE 420
ARLINGTON, VA 22205
Arlington County (703) 536-4000

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 Sirinan Tazen's NPI number?

The NPI number for Sirinan Tazen is 1649473794. It was assigned to this individual provider in the NPPES registry on June 7, 2007.

Where is Sirinan Tazen located?

Sirinan Tazen practices at 1635 N George Mason Dr Ste 420, Arlington, VA 22205. The listed phone number is (703) 536-4000.

What is Sirinan Tazen's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Sirinan Tazen enrolled in Medicare?

Yes. Sirinan Tazen 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.

Is Sirinan Tazen affiliated with any hospitals?

According to CMS data, Sirinan Tazen is affiliated with Virginia Hospital Center.

When was this NPI record last updated?

The NPPES record for Sirinan Tazen was last updated on February 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.