Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Aathi Lakshmi Mariappan

Individual provider Internal Medicine Physician · NPI 1023635224

Aathi Lakshmi Mariappan is an Internal Medicine in Oak Ridge, Tennessee. Qualified in 2018, 8 years ago. Practices with Hospital Medicine Services of Tennessee PC, a 158-clinician group and accepts Medicare assignment. Licensed in Tennessee.

Years since qualifying
8
Licensed in
TN
In the registry since
2020
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Practice location Address checks out

990 Oak Ridge Tpke
Oak Ridge, TN 37830-6976
Phone: (865) 835-1000
Fax: (865) 835-4303
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 68290 (TN)

Record details

NPI number1023635224
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedJuly 3, 2020
Last updated in NPPESJuly 8, 2025
Certification dateJuly 8, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Hospital Medicine Services Of Tennessee Pc — 158 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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