Allergy and Immunology · Maryville, TN
NPI
1306956586
Since 2006
Specialty
Allergy and Immunology
Code 207K00000X
Group practices
2
Medicare group memberships
Hospitals
0
Hospital affiliations
616 W Lamar Alexander Pkwy
Maryville, TN, 37801
Phone (865) 273-0008
Groups this clinician bills Medicare through
Medicare paid, 2024
$965K
69,763 services
Medicare patients, 2024
1,163
Average age 73
Drug cost, 2024
$2.0M
3,124 prescriptions
Company payments, 2025
$2,589
From 22 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Karthik R Krishnan was code J1575 (injection, immune globulin/hyaluronidase, (hyqvia), 100 mg immuneglobulin), 28,300 times for 11 patients. In total Karthik R Krishnan billed 69,763 services in 43 codes, and Medicare paid $965K.
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2026-01-08.
| Code | Setting | Services | Patients | Paid per service | Medicare paid |
|---|
| J1575 Injection, immune globulin/hyaluronidase, (hyqvia), 100 mg immuneglobulin | Office | 28,300 | 11 | $13.45 | $381K |
| 95165 Treatment - Miscellaneous | Office | 15,770 | 502 | $9.83 | $155K |
| 95004 Test - Miscellaneous | Office | 7,465 | 108 | $2.38 | $18K |
| J2357 Injection, omalizumab, 5 mg | Office | 5,190 | 31 | $29.83 | $155K |
| 95117 Treatment - Miscellaneous | Office | 3,166 | 637 | $7.77 | $25K |
| 95024 Test - Miscellaneous | Office | 1,480 | 89 | $5.51 | $8,149 |
| 95115 Treatment - Miscellaneous | Office | 864 | 140 | $6.60 | $5,701 |
| 96372 Injection Administration | Office | 288 | 67 | $10.28 | $2,960 |
| 99213 Office E&M - Established | Office | 195 | 147 | $60.35 | $12K |
| 99203 Office E&M - New | Office | 149 | 149 | $71.05 | $11K |
| 96369 Intravenous Infusion, Hydration | Office | 84 | 13 | $98.16 | $8,246 |
| 95149 Treatment - Miscellaneous | Office | 83 | 11 | $85.16 | $7,068 |
| 95148 Treatment - Miscellaneous | Office | 72 | 12 | $65.67 | $4,728 |
| J7614 Levalbuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 0.5 mg | Office | 54 | 18 | $0.04 | $2.19 |
| 94010 Pulmonary Function Testing | Office | 28 | 28 | $19.36 | $542 |
By year: 2022 $694K for 71,052 services; 2023 $752K for 61,528 services; 2024 $965K for 69,763 services.
Medicare prescription drug claims, 2024
In 2024, the drug Karthik R Krishnan prescribed most often to Medicare patients was Fluticasone Propionate, with 553 prescriptions and refills. In total Karthik R Krishnan wrote 3,124 Medicare prescriptions that cost $2.0M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Fluticasone Propionate Generic | 553 | 1,114 | 245 | $7,762 |
| Montelukast Sodium Generic | 443 | 916 | 163 | $3,558 |
| Azelastine Hcl Generic | 427 | 759 | 182 | $12K |
| Hydroxyzine Hcl Generic | 181 | 252 | 62 | $2,109 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 179 | 221 | 47 | $138K |
| Ipratropium Bromide Generic | 172 | 249 | 70 | $5,868 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 106 | 126 | 64 | $3,049 |
| Xolair Omalizumab | 98 | 98 | 15 | $327K |
| Prednisone Generic | 61 | 69 | 47 | $202 |
| Hyqvia Igg/Hyaluronidase,recombinant | 60 | 60 | Under 11 | $175K |
| Breo Ellipta Fluticasone/Vilanterol | 56 | 77 | 15 | $30K |
| Famotidine Generic | 53 | 93 | 15 | $795 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 52 | 52 | 46 | $742 |
| Pantoprazole Sodium Generic | 50 | 74 | 13 | $197 |
| Epinephrine Generic | 46 | 56 | 25 | $12K |
Brand drugs: 837 claims; generic drugs: 2,287 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Karthik R Krishnan $2,589 ($2,589 in general payments such as food, travel and fees) from 22 companies. The largest payer was GlaxoSmithKline, LLC. with $501.
| Company | Payments | Amount |
|---|---|---|
| GlaxoSmithKline, LLC. GSK | 29 | $501 |
| AstraZeneca Pharmaceuticals LP AZN | 14 | $329 |
| CSL Behring CSL.AX | 16 | $305 |
| Regeneron Healthcare Solutions, Inc. REGN | 10 | $264 |
| Genentech USA, Inc. ROG.SW | 8 | $202 |
| Grifols USA, LLC | 8 | $178 |
| Amgen Inc. AMGN | 9 | $146 |
| Novartis Pharmaceuticals Corporation NVS | 5 | $116 |
| Genzyme Corporation SNY | 5 | $113 |
| ARS Pharmaceuticals Operations, Inc. SPRY | 4 | $91.75 |
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.