Doctor profile · Federal record
Dr. Aathi Lakshmi Mariappan
Internal Medicine Physician (CMS: Internal Medicine) · Oak Ridge, TN
- NPI 1023635224
- Accepts Medicare
- 8 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
990 Oak Ridge Tpke
Oak Ridge, TN 378306976
(865) 835-1000
fax (865) 835-4303
Credentials & registration
- NPI registered
- July 2020 — 6 yrs on file
- Profile last updated
- July 8, 2025
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Tennessee #68290
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1023635224. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
230
Distinct HCPCS
3
Medicare allowed
$19,336
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 162 | 61 | $74 | |
99239 |
Hospital discharge day management, more than 30 minutes | 41 | 41 | $107 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 27 | 16 | $111 |
In context: peer comparison
Among 10 peers in Oak Ridge Internal Medicine Physician, average services per provider: 137. This provider delivers 1.7× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Aathi Lakshmi Mariappan's medical specialty?
Dr. Aathi Lakshmi Mariappan practices Internal Medicine Physician in Oak Ridge, TN.
Where does Dr. Aathi Lakshmi Mariappan practice?
Dr. Aathi Lakshmi Mariappan practices at 990 Oak Ridge Tpke, Oak Ridge, TN 378306976. Office phone: 8658351000.
What is Dr. Aathi Lakshmi Mariappan's NPI?
Dr. Aathi Lakshmi Mariappan's National Provider Identifier (NPI) is 1023635224, issued by NPPES.
Does Dr. Aathi Lakshmi Mariappan accept Medicare assignment?
Yes. Dr. Aathi Lakshmi Mariappan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Aathi Lakshmi Mariappan commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.