Candiah Thiagarajah, M.D.
NPI 1982779922 · Psychiatry Physician · Columbia, SC
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Candiah Thiagarajah, M.D. is a Psychiatry Physician provider in Columbia, SC (NPI 1982779922).
Provider details
- NPI number
- 1982779922
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 10305 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
168 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 119 | $72 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 49 | $45 |
Typical Medicare-allowed amounts for these services range $45–$72 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Olanzapinebrand: Olanzapine Odt | 159 |
| Clonazepam | 82 |
| Olanzapine | 66 |
| Clozapine | 40 |
| Valproic Acid (as Sodium Salt)brand: Valproic Acid | 39 |
| Quetiapine Fumarate | 36 |
| Gabapentin | 36 |
| Buspirone Hcl | 35 |
| Chlorpromazine Hcl | 33 |
| Fluoxetine Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$16 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-22
- Last updated
- 2017-12-19
Frequently asked questions
- What is Candiah Thiagarajah's NPI number?
- Candiah Thiagarajah's National Provider Identifier (NPI) is 1982779922, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Candiah Thiagarajah's specialty?
- Candiah Thiagarajah is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Candiah Thiagarajah located?
- Candiah Thiagarajah's practice location on file with NPPES is 220 Faison Dr, Columbia, SC 29203-3210.
- What is Candiah Thiagarajah's phone number?
- The practice phone number listed in the NPPES registry for Candiah Thiagarajah is (803) 898-8405.
- Does Candiah Thiagarajah accept Medicare?
- Candiah Thiagarajah is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Candiah Thiagarajah's NPI active?
- Yes — Candiah Thiagarajah's NPI (1982779922) is active in the NPPES registry as of the last update on 2017-12-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.