Thiruvoipati Nandakumar, M.D.
Internal Medicine Physician · Redding, CA
Thiruvoipati Nandakumar, M.D. is an internal medicine physician with a practice address in Redding, California, and NPI 1598773632, issued on Aug 4, 2006. Check the license (California A61639, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thiruvoipati Nandakumar
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A61639 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2801 Eureka Way, Redding, CA 96001
- Phone
- (530) 241-1473
- Enumerated
- Aug 4, 2006
- Record last updated
- Jun 12, 2023
- Fax
- (530) 245-4139
- Medicare enrollment
- Enrolled (PECOS I20071023000447); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2801 Eureka Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kolby ArnoldPhysical Therapist1205326899
- Sherilyn Back, COTA/LOccupational Therapy Assistant1598121030
- Anthony CasamoOccupational Therapy Assistant1366945776
- Curtis Cascagnette, PTAPhysical Therapy Assistant1346716032
- Abbey Chinn, LVNLicensed Vocational Nurse1013871045
- Julia EllenwoodPhysical Therapy Assistant1942198296
Verify Thiruvoipati Nandakumar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A61639Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average internal medicine physician in 2024
633 Medicare Part D claims for 100 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 22 claims were for opioids.
Most prescribed
- Atorvastatin Calcium35 claims
- Pantoprazole Sodium31 claims
- Levothyroxine Sodium25 claims
- Valsartan25 claims
- Gabapentin20 claims
- Eliquis19 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $146.78
2 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Shasta Regional Medical Group IncRedding, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thiruvoipati Nandakumar among 17,696 internal medicine physician records in California
Thiruvoipati Nandakumar, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1978 · median 2004 among the 11,065 with a school on file
- Record last updated2023 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
38 internal medicine physician records list a practice address in Redding
They are 38 of the 3,572 NPPES records with a practice address in Redding, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Redding → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Fernando Alvarez, M.D.Redding, CA 960011801804901
- Than Aung, MDRedding, CA 960011578504841
- Stephen Casey, M.D.Redding, CA 960011902973480
- William Devlaming, M.D.Redding, CA 960011023080488
- James Hardy, M.D.Redding, CA 960011881689016
- Lily Jamm, M.D.Redding, CA 960011700971769
- Carolyn Lintner, M.D.Redding, CA 960011558303008
- Olivia Mansilla, MDRedding, CA 960011376563189
Common questions
What is Thiruvoipati Nandakumar, M.D.'s NPI number?
Thiruvoipati Nandakumar, M.D.'s National Provider Identifier (NPI) is 1598773632, issued on Aug 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thiruvoipati Nandakumar, M.D. located?
The NPPES record lists a practice address at 2801 Eureka Way, Redding, CA, 96001. Phone: (530) 241-1473. Providers update this record themselves, so call before visiting.
How can I verify Thiruvoipati Nandakumar, M.D.'s license?
NPPES lists California license number A61639, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thiruvoipati Nandakumar, M.D. prescribe under Medicare Part D?
In 2024, Thiruvoipati Nandakumar, M.D. had 633 Medicare Part D claims for 100 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Thiruvoipati Nandakumar, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.