Thomas I. Kanomata, MD
Internal Medicine Physician · Grass Valley, CA
Thomas I. Kanomata, MD is an internal medicine physician with a practice address in Grass Valley, California, and NPI 1659336543, issued on Apr 20, 2006. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas I. Kanomata
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 66689 GA
Self-reported in NPPES; status is on the state search - Practice location
- 280 Sierra College Dr, Grass Valley, CA 95945
- Phone
- (530) 477-4480
- Enumerated
- Apr 20, 2006
- Record last updated
- Sep 16, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (530) 274-7532
- Medicaid ID
- 003116311A GA
- Medicare enrollment
- Enrolled (PECOS I20141013002051); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1990
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 280 Sierra College Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas I. Kanomata in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.9 times the Medicare Part D claims of the average internal medicine physician in 2024
12,305 Medicare Part D claims for 799 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 502 claims were for opioids.
Most prescribed
- Levothyroxine Sodium550 claims
- Atorvastatin Calcium546 claims
- Amlodipine Besylate521 claims
- Lisinopril430 claims
- Trazodone Hcl325 claims
- Losartan Potassium316 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): 96.5 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).
Bills Medicare through one group practice
- Dignity Health Medical FoundationGrass Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
22 internal medicine physician records list a practice address in Grass Valley
They are 22 of the 1,540 NPPES records with a practice address in Grass Valley, and 17,696 internal medicine physician records in California.
All 22 in Grass Valley → All 17,696 in California → Every provider in Grass Valley →
Other internal medicine physician records in California
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- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Thomas I. Kanomata, MD's NPI number?
Thomas I. Kanomata, MD's National Provider Identifier (NPI) is 1659336543, issued on Apr 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas I. Kanomata, MD located?
The NPPES record lists a practice address at 280 Sierra College Dr, Grass Valley, CA, 95945. Phone: (530) 477-4480. Providers update this record themselves, so call before visiting.
How can I verify Thomas I. Kanomata, MD's license?
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 Thomas I. Kanomata, MD prescribe under Medicare Part D?
In 2024, Thomas I. Kanomata, MD had 12,305 Medicare Part D claims for 799 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Thomas I. Kanomata, MD's MIPS final score?
The 2023 MIPS final score is 96.5 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.