Sam Tonthat, D.O.
Nephrology Physician · Fresno, CA
Sam Tonthat, D.O. is a nephrology physician with a practice address in Fresno, California, and NPI 1699139782, issued on Apr 5, 2016. Check the license (California 20A15865, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sam Tonthat
- Credential
- D.O.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 20A15865 CA
Self-reported in NPPES; status is on the state search - Practice location
- 155 N Fresno St, Fresno, CA 93701
- Phone
- (559) 499-6500
- Enumerated
- Apr 5, 2016
- Record last updated
- May 7, 2022
- Medicare enrollment
- Enrolled (PECOS I20220518003147); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 155 N Fresno St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Waleed AbdelfattahStudent in an Organized Health Care Education/Training Program1982544359
- Khaled Mohammed Abdullah, MBBSStudent in an Organized Health Care Education/Training Program1003552472
- Mohammad Abidali, MDStudent in an Organized Health Care Education/Training Program1174383764
- Charlie Abraham, MDSleep Medicine (Internal Medicine) Physician1588841043
- Luke Adams, MDStudent in an Organized Health Care Education/Training Program1497458855
- Yasmeen Afridi, DOStudent in an Organized Health Care Education/Training Program1548964489
Verify Sam Tonthat in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A15865Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $235.56
2 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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 2 group practices
- Kevin Pham MD IncOrange, CA
- Newport Critical Care Physicians Medical Group IncIrvine, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sam Tonthat among 1,468 nephrology physician records in California
Sam Tonthat, D.O. is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 89% of them.
- NPI issued2016 · 89% of these records are older, 9% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2016 · median 2001 among the 1,128 with a school on file
- Record last updated2022 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Fresno → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Kyin Oo, MDFresno, CA 937031558328237
- Khin Yee, M.D.Fresno, CA 937101720377070
- Irma Wisener, NPFresno, CA 937111265602775
- Yangming Cao, MDFresno, CA 937201558339630
- Harpreet DhindsaFresno, CA 937201801864020
- Hemant DhingraFresno, CA 937201487672192
- Joseph Duflot, MDFresno, CA 937201467420679
- Steven Levy, MDFresno, CA 937201487623427
Common questions
What is Sam Tonthat, D.O.'s NPI number?
Sam Tonthat, D.O.'s National Provider Identifier (NPI) is 1699139782, issued on Apr 5, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Sam Tonthat, D.O. located?
The NPPES record lists a practice address at 155 N Fresno St, Fresno, CA, 93701. Phone: (559) 499-6500. Providers update this record themselves, so call before visiting.
How can I verify Sam Tonthat, D.O.'s license?
NPPES lists California license number 20A15865, 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.
What is Sam Tonthat, D.O.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. 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.