Mary Grace Leong, RD, CDE
Registered Dietitian · Redwood City, CA
Mary Grace Leong, RD, CDE is a registered dietitian with a practice address in Redwood City, California, and NPI 1437401031, issued on Oct 5, 2012. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Grace Leong
- Credential
- RD, CDE
- Primary taxonomy
- Registered Dietitian 133V00000X
- Practice location
- 2710 Middlefield RD, Redwood City, CA 94063
- Phone
- (650) 578-7141
- Enumerated
- Oct 5, 2012
- Record last updated
- Jun 16, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (650) 366-4732
- Medicare enrollment
- Enrolled (PECOS I20160912000526); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest registered dietitian records → All 7,148 in California → Look up another NPI →
Also registered at 2710 Middlefield RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Grace Leong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- County OF San MateoRedwood City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Grace Leong among 7,148 registered dietitian records in California
Mary Grace Leong, RD, CDE 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 2012, is newer than 26% of them.
- NPI issued2012 · 26% of these records are older, 71% newer
- In a Medicare fileYes · 5% of these records are
- In the CMS Doctors and Clinicians fileYes · 7% of these records are
- Graduated1985 · median 2014 among the 529 with a school on file
- Record last updated2016 · 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).
Registered Dietitian providers in California
There are 7,148 registered dietitian records in California.
All 7,148 in California → Every provider in Redwood City → Registered Dietitian nationwide →
The 8 registered dietitian records with the nearest ZIP codes
- Scott Cahn, RDRedwood City, CA 940631063661122
- Mary Loretta Davila, R.D. IBCLCRedwood City, CA 940631417309170
- Samantha Finkelstein, RDRedwood City, CA 940631326494899
- Brenda Gormley, RDRedwood City, CA 940631831236884
- Kimberly Knight, REGISTERED DIETITIANRedwood City, CA 940631982764726
- Anne Kolker, RDRedwood City, CA 940631982994646
- Melinda Mabubay, REGISTERED DIETITIANRedwood City, CA 940631861539157
- Tracie Sayama, RDRedwood City, CA 940631447406640
Common questions
What is Mary Grace Leong, RD, CDE's NPI number?
Mary Grace Leong, RD, CDE's National Provider Identifier (NPI) is 1437401031, issued on Oct 5, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mary Grace Leong, RD, CDE located?
The NPPES record lists a practice address at 2710 Middlefield RD, Redwood City, CA, 94063. Phone: (650) 578-7141. Providers update this record themselves, so call before visiting.
How can I verify Mary Grace Leong, RD, CDE's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
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.