Tinatin Khizanishvili O'Connell, M.D.
Gastroenterology Physician · Manassas, VA
Tinatin Khizanishvili O'Connell, M.D. is a gastroenterology physician with a practice address in Manassas, Virginia, and NPI 1720253503, issued on Apr 23, 2008. Check the license (Virginia 0101251722, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Tinatin Khizanishvili O'Connell
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 0101251722 VA
Self-reported in NPPES; status is on the state search - Practice location
- 8640 Sudley RD Ste 201, Manassas, VA 20110
- Phone
- (703) 368-6819
- Enumerated
- Apr 23, 2008
- Record last updated
- Feb 13, 2026
- Fax
- (703) 330-2923
- Medicaid ID
- 1720253503 VA
- Medicare enrollment
- Enrolled (PECOS I20120522001182); accepts Medicare assignment
- Medical or professional school
- Virginia Commonwealth University, School Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 536 in Virginia → Look up another NPI →
Also registered at 8640 Sudley RD Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rizwan Ahmed, M.D.Gastroenterology Physician1841469061
- Tokunbo Ajayi, M.D.Gastroenterology Physician1255625307
- Paul Arnold, MDGastroenterology Physician1992828693
- Michelle Bachtold, PA-CPhysician Assistant1245475607
- Darren Baroni, MDGastroenterology Physician1154377497
- Sara Herbst, APRNFamily Nurse Practitioner1790203586
Verify Tinatin Khizanishvili O'Connell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101251722Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average gastroenterology physician in 2024
325 Medicare Part D claims for 131 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Pantoprazole Sodium107 claims
- Omeprazole34 claims
- Creon19 claims
- Esomeprazole Magnesium15 claims
- Linzess14 claims
- Budesonide Dr13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 73.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $645.17
17 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Gastroenterology Associates VA, LLCManassas, VA
- Sentara Medical GroupSuffolk, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tinatin Khizanishvili O'Connell among 536 gastroenterology physician records in Virginia
Tinatin Khizanishvili O'Connell, M.D. is one of 536 gastroenterology physician records with a practice address in Virginia. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 65% of them.
- NPI issued2008 · 65% of these records are older, 29% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2006 · median 2001 among the 389 with a school on file
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Virginia
There are 536 gastroenterology physician records in Virginia.
All 536 in Virginia → Every provider in Manassas → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Mohammad Abidi, MDManassas, VA 201101295153690
- Rizwan Ahmed, M.D.Manassas, VA 201101841469061
- Tokunbo Ajayi, M.D.Manassas, VA 201101255625307
- Paul Arnold, MDManassas, VA 201101992828693
- Darren Baroni, MDManassas, VA 201101154377497
- Anne Giaccio, MDManassas, VA 201101982618609
- Edward Kim, MDManassas, VA 201101275538076
- Jin Park, MDManassas, VA 201101225033038
Common questions
What is Tinatin Khizanishvili O'Connell, M.D.'s NPI number?
Tinatin Khizanishvili O'Connell, M.D.'s National Provider Identifier (NPI) is 1720253503, issued on Apr 23, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Tinatin Khizanishvili O'Connell, M.D. located?
The NPPES record lists a practice address at 8640 Sudley RD Ste 201, Manassas, VA, 20110. Phone: (703) 368-6819. Providers update this record themselves, so call before visiting.
How can I verify Tinatin Khizanishvili O'Connell, M.D.'s license?
NPPES lists Virginia license number 0101251722, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tinatin Khizanishvili O'Connell, M.D. prescribe under Medicare Part D?
In 2024, Tinatin Khizanishvili O'Connell, M.D. had 325 Medicare Part D claims for 131 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Tinatin Khizanishvili O'Connell, M.D.'s MIPS final score?
The 2023 MIPS final score is 73.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.