DR. KARTHI S. NAMASIVAYAM (M.D.) – Psychiatry Physician, NPI 1437145448
Psychiatry Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
541 PSYCHIATRY in TN
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Provider Addresses for DR. KARTHI S. NAMASIVAYAM (M.D.)
200, Prosperity Drive, Sheraton Executive Park, Cedar Bluff, Knoxville, Knox County, East Tennessee, Tennessee, 37923, United States
KNOXVILLE, TN 379234718
Phone: (865) 824-2828
Fax: (865) 966-8945
Type: Mailing
201 W Springdale Ave
Knoxville, TN 379175158
Phone: (865) 637-9711
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 110 Open Payments records for all available years, with a total value of $72,268.
Total Amount is formed as General ($72,268) + Research ($0) + Ownership ($0) = $72,268.
Last reported payment date: 2024-12-20 • Largest payer in this snapshot: Alkermes, Inc. ($56,986).
Total Amount
$72,268
General + Research + Ownership
Payments
110
Total payment records
General Amount
$72,268
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Alkermes, Inc. | $56,986 |
| E.R. Squibb & Sons, L.L.C. | $14,431 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. | $702 |
| USWM, LLC | $68 |
| Axsome Therapeutics, Inc. | $55 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2008-03-03
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20080303000620 | I | Psychiatry | TN | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 37923)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PSYCHIATRY | TN | 90792 | Psychiatric diagnostic evaluation with medical services | 16 | 16 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice, Sports Medicine | OH | |
| Internal Medicine | MI | |
| Family Practice | MI | |
| Family Practice | MI | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MI | |
| Nurse Practitioner | MI | |
| O P T O M E T R Y | MI | |
| Certified Nurse Midwife (Cnm) | MI | |
| - | MI | |
| P O D I A T R Y | MI |
Reviews
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