Nitin Kumar Sardana, M.D.
Gastroenterology · Internal Medicine (CMS) · Fairfax, VA
At a glance
3700 Joseph Siewick Dr Ste 308, Fairfax, VA 22033
Published activity: Colonoscopy · Upper gastrointestinal (GI) endoscopy for acid reflux. View counts and coverage
NPPES record updated Sep 12, 2025. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
3700 Joseph Siewick Dr Ste 308Fairfax, VA 22033
Additional reported practice locations
3028 Javier Rd Ste 500Fairfax, VA 220314622
Phone: 7036988960
Fax: 5714945794 2150 Pennsylvania Ave Nw
Suite 5-404
Washington, DC 200373201
Phone: 2027412222
Fax: 2027412427 3914 Centreville Rd Ste 350
Chantilly, VA 201513289
Phone: 7037168700
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2008
- CMS specialties
- Gastroenterology · Internal Medicine
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
- Gastroenterology Associates Of Northern Virginia, Llc
- Inova Health Care Services
- Medstar Medical Group Ii Llc
- University Of Maryland Community Medical Group Inc
Reported hospital affiliations
- Inova Alexandria Hospital Alexandria, VA
- Inova Fair Oaks Hospital Fairfax, VA
- Inova Fairfax Hospital Falls Church, VA
- Medstar Saint Mary's Hospital Leonardtown, MD
- University Of Md Charles Regional Medical Center La Plata, MD
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Colonoscopy | 82 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 113 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $260.92 |
Reporting companies
| Company | Amount |
|---|---|
| ABBVIE INC. | $117.73 |
| INTERCEPT PHARMACEUTICALS, INC. | $44.45 |
| SALIX PHARMACEUTICALS, A DIVISION OF BAUSCH HEALTH US, LLC | $30.12 |
| GENZYME CORPORATION | $27.27 |
| AMGEN INC. | $21.00 |
| GILEAD SCIENCES, INC. | $20.35 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Gastroenterology · Internal Medicine (CMS)
- Taxonomy code
- 207RG0100X
- Enumeration date
- Aug 6, 2008
- Record updated
- Sep 12, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207RG0100X · Primary
License reported: D0081222 MD
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
3700 Joseph Siewick Dr Ste 308Fairfax, VA 22033
- Phone
- (703) 698-8960
- Fax
- (647) 646-4744
Mailing address
3700 JOSEPH SIEWICK DR STE 308FAIRFAX, VA 220331739
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
Report a directory issue