Karen Tsui, RD
Registered Dietitian · Fremont, CA
Karen Tsui, RD is a registered dietitian with a practice address in Fremont, California, and NPI 1174964498, issued on Jul 15, 2013. Check the license (California 1041778, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen Tsui
- Credential
- RD
- Primary taxonomy
- Registered Dietitian 133V00000X
- License number
- 1041778 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1860 Mowry Ave Ste 402, Fremont, CA 94538
- Phone
- (510) 713-0700
- Enumerated
- Jul 15, 2013
- Record last updated
- Jul 15, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest registered dietitian records → All 7,148 in California → Look up another NPI →
Verify Karen Tsui in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 1041778Check 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): 99 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).
Karen Tsui among 7,148 registered dietitian records in California
Karen Tsui, RD is one of 7,148 registered dietitian records with a practice address in California. 5% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 29% of them.
- NPI issued2013 · 29% of these records are older, 68% newer
- In a Medicare fileYes · 5% of these records are
- In the CMS Doctors and Clinicians fileNo · 7% of these records are
- Record last updated2013 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
53 registered dietitian records list a practice address in Fremont
They are 53 of the 4,749 NPPES records with a practice address in Fremont, and 7,148 registered dietitian records in California.
All 7,148 in California → Every provider in Fremont → Registered Dietitian nationwide →
The 8 registered dietitian records with the nearest ZIP codes
- Dolly Ahluwalia, RDFremont, CA 945381659429157
- Jothika Bhat, R.D.Fremont, CA 945381497920789
- Carol Chow, R. D.Fremont, CA 945381023183266
- Jill Christensen, RDFremont, CA 945381881671311
- Barbara Christie, RDFremont, CA 945381902005820
- Melissa Gibson, RDFremont, CA 945381336238500
- Margie Hawkins, RD, CDEFremont, CA 945381093880932
- Manju JacobFremont, CA 945381023140936
Common questions
What is Karen Tsui, RD's NPI number?
Karen Tsui, RD's National Provider Identifier (NPI) is 1174964498, issued on Jul 15, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Karen Tsui, RD located?
The NPPES record lists a practice address at 1860 Mowry Ave Ste 402, Fremont, CA, 94538. Phone: (510) 713-0700. Providers update this record themselves, so call before visiting.
How can I verify Karen Tsui, RD's license?
NPPES lists California license number 1041778, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
What is Karen Tsui, RD's MIPS final score?
The 2023 MIPS final score is 99 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.