Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Tinatin Khizanishvili O'Connell, MD

Individual provider Gastroenterology Physician · NPI 1720253503

Dr. Tinatin Khizanishvili O'Connell, MD practises Gastroenterology in Manassas, Virginia. Graduated from Virginia Commonwealth University, School of Medicine in 2006, 20 years ago. Practices with Sentara Medical Group, a 1,403-clinician group, works from 5 locations and accepts Medicare assignment. Licensed in Virginia.

Years since qualifying
20
Trained at
Virginia Commonwealth University, School of Medicine
Licensed in
VA
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

8640 Sudley Rd Ste 201
Manassas, VA 20110-4404
Phone: (703) 368-6819
Fax: (703) 330-2923
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 24430 Stone Springs Blvd Ste 250, Dulles, VA 20166-2268 — (571) 248-0653
  • 7915 Lake Manassas Dr Ste 302, Gainesville, VA 20155-3260 — (571) 248-0653
  • 824 N Military Hwy Ste 100, Norfolk, VA 23502-3652 — (888) 236-2263
  • 170 W Shirley Ave Ste 205, Warrenton, VA 20186-3083 — (540) 347-2470

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 0101251722 (VA)

Record details

NPI number1720253503
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 23, 2008
Last updated in NPPESFebruary 13, 2026
Certification dateFebruary 13, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolVIRGINIA COMMONWEALTH UNIVERSITY, SCHOOL OF MEDICINE
Graduated 2006 (20 years in practice)
Group practice Sentara Medical Group — 1403 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Colonoscopy 95 times · 78th percentile
Upper gastrointestinal (GI) endoscopy for acid reflux 107 times · 78th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients307
Services billed 7,419 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $267 9 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Sentara Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1403 clinicians in the practice; 12 are shown here.

Other providers in Manassas