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

Dr. Karthi S. Namasivayam, MD

Individual provider Psychiatry Physician · NPI 1437145448

Dr. Karthi S. Namasivayam, MD practises Psychiatry in Knoxville, Tennessee. Qualified in 1989, 37 years ago. Practices with Grace Health Inc, a 28-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Tennessee.

Years since qualifying
37
Licensed in
TN
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

200 Prosperity Dr
Knoxville, TN 37923
Phone: (865) 824-2828
Fax: (865) 966-8945
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 201 W Springdale Ave, Knoxville, TN 37917-5158 — (865) 637-9711

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 42956 (TN)

Record details

NPI number1437145448
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 26, 2005
Last updated in NPPESJuly 26, 2018

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolOTHER
Graduated 1989 (37 years in practice)
Group practice Grace Health Inc — 28 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $26,223 12 payments
Consulting Fee $6,230 2 payments
Travel and Lodging $4,207 18 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $1,581 39 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Grace Health Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 28 clinicians in the practice; 12 are shown here.

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