Thiruvoipati Nandakumar, M.D.
NPI 1598773632 · Internal Medicine Physician · Redding, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thiruvoipati Nandakumar, M.D. is a Internal Medicine Physician provider in Redding, CA (NPI 1598773632).
Provider details
- NPI number
- 1598773632
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A61639 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
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
5,448 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 | 2,596 | $81 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 1,921 | $78 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 214 | $121 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 200 | $8 |
| Initial Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 35 Minutes99305 | 102 | $139 |
| Advance Care Planning, First 30 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 35 | 32 |
| Pantoprazole Sodium | 31 | 30 |
| Valsartan | 25 | 18 |
| Levothyroxine Sodium | 25 | 23 |
| Gabapentin | 20 | 20 |
| Apixabanbrand: Eliquis | 19 | 19 |
| Furosemide | 19 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$147 across 2 records (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
- 2006-08-04
- Last updated
- 2023-06-12
- Certified
- 2023-06-12
Frequently asked questions
- What is Thiruvoipati Nandakumar's NPI number?
- Thiruvoipati Nandakumar's National Provider Identifier (NPI) is 1598773632, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thiruvoipati Nandakumar's specialty?
- Thiruvoipati Nandakumar is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thiruvoipati Nandakumar located?
- Thiruvoipati Nandakumar's practice location on file with NPPES is 2801 Eureka Way, Redding, CA 96001-0222.
- What is Thiruvoipati Nandakumar's phone number?
- The practice phone number listed in the NPPES registry for Thiruvoipati Nandakumar is (530) 241-1473.
- Does Thiruvoipati Nandakumar accept Medicare?
- Thiruvoipati Nandakumar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thiruvoipati Nandakumar's NPI active?
- Yes — Thiruvoipati Nandakumar's NPI (1598773632) is active in the NPPES registry as of the last update on 2023-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.