Doctor profile · Federal record
Dr. Chaithanya Mallikarjun, MD
Gastroenterology Physician (CMS: Gastroenterology) · Hepatology Physician · San Antonio, TX
- NPI 1114101904
- Accepts Medicare
- MIPS 79.9 / 100 · 2023
- 12 yrs in practice
- Licensed in 2 states
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
19284 Stone Oak Pkwy, 104
San Antonio, TX 782583473
(210) 268-0124
Credentials & registration
- NPI registered
- December 2007 — 19 yrs on file
- Profile last updated
- November 20, 2014
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (2)
- Texas #P9220 · Louisiana #MD.201765
- Medicaid
- LA #1027324
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1114101904. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,068
Distinct HCPCS
10
Medicare allowed
$90,330
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 475 | 113 | $33 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 140 | 102 | $125 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 82 | 82 | $87 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 72 | 71 | $242 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 63 | 62 | $120 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 60 | 28 | $117 | |
88313 |
Special stained specimen slides to examine tissue including interpretation and report | 48 | 26 | $67 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 40 | 40 | $170 | |
88341 |
Special stained specimen slides to examine tissue, each additional procedure | 34 | 15 | $56 | |
88342 |
Special stained specimen slides to examine tissue, initial procedure | 28 | 27 | $64 |
In context: peer comparison
Among 38 peers in San Antonio Gastroenterology Physician, average services per provider: 78. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$1,950
Transactions
93
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 20 | $336.96 | |
| Lilly USA, LLC | 9 | $222.38 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 17 | $219.05 | |
| Janssen Biotech, INC. | 16 | $199.56 | |
| Janssen Pharmaceuticals, INC | 1 | $110.53 | |
| Celltrion USA INC. | 4 | $87.74 | |
| Regeneron Healthcare Solutions, INC. | 3 | $84.81 | |
| Genzyme Corporation | 3 | $77.45 | |
| RedHill Biopharma INC. | 4 | $75.00 | |
| Ipsen Biopharmaceuticals, INC | 3 | $67.71 | |
| Aimmune Therapeutics, INC. | 3 | $60.47 | |
| Merck Sharp & Dohme LLC | 2 | $56.32 | |
| Pfizer INC. | 3 | $51.48 | |
| Ardelyx, INC. | 3 | $48.12 | |
| Evoke Pharma, INC. | 2 | $45.01 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
156
Patients
88
Total drug cost
$4,785
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 67 | 27 | $1,502 |
| Pantoprazole Sodium | Generic | 40 | 21 | $583 |
| Famotidine | Generic | 20 | 13 | $942 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 15 | 15 | $1,154 |
| Ondansetron Odt (Ondansetron) | Brand | 14 | 12 | $604 |
Hospital affiliations
Frequently asked questions
What is Dr. Chaithanya Mallikarjun's medical specialty?
Dr. Chaithanya Mallikarjun practices Gastroenterology Physician in San Antonio, TX.
Where does Dr. Chaithanya Mallikarjun practice?
Dr. Chaithanya Mallikarjun practices at 19284 Stone Oak Pkwy, San Antonio, TX 782583473. Office phone: 2102680124.
What is Dr. Chaithanya Mallikarjun's NPI?
Dr. Chaithanya Mallikarjun's National Provider Identifier (NPI) is 1114101904, issued by NPPES.
Does Dr. Chaithanya Mallikarjun accept Medicare assignment?
Yes. Dr. Chaithanya Mallikarjun accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Chaithanya Mallikarjun commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Established patient office or other outpatient visit (HCPCS 99214); Biopsy of large bowel using a flexible endoscope (HCPCS 45380). Source: CMS Medicare Physician & Other Practitioners file.