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DR. SIDDHARTH BAJPAI M.D.
NPI 1093945727
Psychiatry & Neurology - Psychiatry in Fairfax, VA

Active since July 15, 2009PECOS EnrolledAccepts Medicare Assignment
8500 EXECUTIVE PARK AVE, STE 200, FAIRFAX, VA 22031(319) 356-1616(703) 573-2351 Get Directions Write a Review

NPPES record last updated: August 2, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Siddharth Bajpai M.d. NPPES

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

DR. SIDDHARTH BAJPAI M.D. (NPI 1093945727) is an individual psychiatry provider in Fairfax, Virginia, licensed in Virginia (0101260238) and active in the NPI registry since July 2009. He is enrolled in Medicare PECOS and is a graduate of Other (2002).

NPPES Registry Identity

NPI1093945727
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. SIDDHARTH BAJPAICredential: M.D.
Location Address8500 EXECUTIVE PARK AVE, STE 200Fairfax, VA 22031-2228
Mailing Address8500 Executive Park Ave, Ste 200Fairfax, VA 22031-2228 · (319) 356-1616
Phone(319) 356-1616
Fax(703) 573-2351
Sole ProprietorNo
Medical School CMSOtherGraduated 2002
Enumeration DateJuly 15, 2009
Last NPPES UpdateAugust 2, 2016
✔ NPI 1093945727 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Licenses✔ Licensed in VA · 0101260238✔ Licensed in IA · R-8537
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.
8500 EXECUTIVE PARK AVE, Fairfax, VA 22031
Open in Google Maps ↗

Other Identifiers 1

Medicare PIN3480527ZC6LMD

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. Siddharth Bajpai 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 ID2365682788
PECOS Enrollment IDI20160830002407, I20160901000632
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 Siddharth Bajpai reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Northern Virginia Psychiatric Group
Same address
Psychiatry
8500 EXECUTIVE PARK AVE, SUITE 200
Fairfax, VA 22031
  • Reassigned Medicare billing, District of Columbia and Virginia enrollments
  • 17 clinicians in this Medicare group
NPI 1396786141 (703) 698-5220
Arman C. Moshyedi, MD, PLLC
4.2 mi
Psychiatry
8405 GREENSBORO DR STE 120
Mc Lean, VA 22102
  • Reassigned Medicare billing, District of Columbia enrollment
  • 17 clinicians in this Medicare group
NPI 1366005183 (855) 940-4867

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 4

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.
744 services103 patients
Psychotherapy with evaluation and management visit, 30 minutes 90833
Psychotherapy with evaluation and management is a 30-minute session where a mental health professional talks with you about your concerns and feelings. They assess your mental health, provide support, and manage your treatment plan to help improve your well-being.
592 services89 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.
40 services11 patients
Psychiatric diagnostic evaluation with medical services 90792
A psychiatric diagnostic evaluation with medical services is a comprehensive assessment. It includes a detailed examination of your mental health and physical wellbeing, as well as your personal and family history. This evaluation aids in creating an effective treatment plan.
18 services18 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.

DIANE OSBORNE LCSW
Social Worker
8500 EXECUTIVE PARK AVE, SUITE 200
FAIRFAX, VA 22031
Fairfax County (703) 698-5220
ALEXANDRA ROTH LCSW
Social Worker
8500 EXECUTIVE PARK AVE, SUITE 200
FAIRFAX, VA 22031
Fairfax County (703) 698-5220
CRISTINA NAYDA THURBER PA-C
Physician Assistant
8500 EXECUTIVE PARK AVE
FAIRFAX, VA 22031
Fairfax County (703) 573-0504
KIRSTEN E WEST
Chiropractor
8500 EXECUTIVE PARK AVE
FAIRFAX, VA 22031
Fairfax County (703) 698-7117
MARQUISE NABILE RIVERA DC
Chiropractor
8500 EXECUTIVE PARK AVE
FAIRFAX, VA 22031
Fairfax County (703) 698-7117
KELLY MURPHY LPC
Counselor (Mental Health)
8500 EXECUTIVE PARK AVE
FAIRFAX, VA 22031
Fairfax County (703) 876-8480
MS. ELIZABETH WEEKS MUSIL LCSW DCSW
Social Worker (Clinical)
8500 EXECUTIVE PARK AVE, STE 200
FAIRFAX, VA 22031
Fairfax County (571) 277-6437
AUTISM CONTINUUM THERAPIES LLC
Behavior Analyst
8500 EXECUTIVE PARK AVE, SUITE 408
FAIRFAX, VA 22031
Fairfax County (855) 295-3276

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 Siddharth Bajpai's NPI number?

The NPI number for Siddharth Bajpai is 1093945727. It was assigned to this individual provider in the NPPES registry on July 15, 2009.

Where is Siddharth Bajpai located?

Siddharth Bajpai practices at 8500 Executive Park Ave Ste 200, Fairfax, VA 22031. The listed phone number is (319) 356-1616.

What is Siddharth Bajpai's specialty?

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

Is Siddharth Bajpai enrolled in Medicare?

Yes. Siddharth Bajpai 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 Siddharth Bajpai's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Siddharth Bajpai reassigns Medicare benefits to 2 organizations: Northern Virginia Psychiatric Group (Fairfax, VA) and Arman C. Moshyedi, MD, PLLC (Mc Lean, 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 Siddharth Bajpai's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Siddharth Bajpai was last updated on August 2, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.