Chaithanya Mallikarjun, MD
Gastroenterology Physician · San Antonio, TX
Chaithanya Mallikarjun, MD is a gastroenterology physician with a practice address in San Antonio, Texas, and NPI 1114101904, issued on Dec 28, 2007. Check the license (Texas P9220, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Chaithanya Mallikarjun
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- P9220 TX
MD.201765 LA
Self-reported in NPPES; status is on the state search - Practice location
- 19284 Stone Oak Pkwy, San Antonio, TX 78258
- Phone
- (210) 268-0124
- Enumerated
- Dec 28, 2007
- Record last updated
- Nov 20, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicaid ID
- 1027324 LA
- Medicare enrollment
- Enrolled (PECOS I20141008002295); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 19284 Stone Oak Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Seema Dar, MDGastroenterology Physician1548350598
- Margaret Helminiack, FNPNurse Practitioner1992908735
Verify Chaithanya Mallikarjun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P9220Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average gastroenterology physician in 2024
247 Medicare Part D claims for 116 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium54 claims
- Omeprazole36 claims
- Sod Sulf-Potass Sulf-Mag Sulf17 claims
- Famotidine16 claims
- Suflave11 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): 79.9 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: $1,949.57
105 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 one group practice
- Texas Digestive Disease Consultants, PLLCSan Antonio, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gastroenterology Physician providers in Texas
There are 1,478 gastroenterology physician records in Texas.
Other gastroenterology physician records in Texas
- Ali AamarHouston, TX1922419209
- Amro Abdellatief, MDMcAllen, TX1932737020
- Wasif Abidi, M.D., PH.D.Houston, TX1821230780
- Olufemi Abiodun, MDArlington, TX1821199464
- Mohammed Aboelsoud, MDShenandoah, TX1316351430
- Bincy Abraham, MDHouston, TX1578767166
- Cherian Abraham, M.D.North Richland Hills, TX1134188311
- Sindhu Abraham, M.D.Plano, TX1033178223
- Daniela Abrams, MDGalveston, TX1801357793
- Rajeshwar Abrol, M.D.Tomball, TX1447258108
Common questions
What is Chaithanya Mallikarjun, MD's NPI number?
Chaithanya Mallikarjun, MD's National Provider Identifier (NPI) is 1114101904, issued on Dec 28, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Chaithanya Mallikarjun, MD located?
The NPPES record lists a practice address at 19284 Stone Oak Pkwy, San Antonio, TX, 78258. Phone: (210) 268-0124. Providers update this record themselves, so call before visiting.
How can I verify Chaithanya Mallikarjun, MD's license?
NPPES lists Texas license number P9220, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Chaithanya Mallikarjun, MD prescribe under Medicare Part D?
In 2024, Chaithanya Mallikarjun, MD had 247 Medicare Part D claims for 116 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Chaithanya Mallikarjun, MD's MIPS final score?
The 2023 MIPS final score is 79.9 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.