NPPES file of Aug 9, 2026

Rei Julienne Tan Sy, RD

Registered Dietitian · Modesto, CA

Rei Julienne Tan Sy, RD is a registered dietitian with a practice address in Modesto, California, and NPI 1477378727, issued on Nov 21, 2024. Check the license (California 86329219, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1477378727
Name
Rei Julienne Tan Sy
Credential
RD
Primary taxonomy
Registered Dietitian 133V00000X
License number
86329219 CA
Self-reported in NPPES; status is on the state search
Practice location
600 Coffee RD, Modesto, CA 95355
Phone
(209) 550-3962
Enumerated
Nov 21, 2024
Record last updated
Feb 14, 2025
Medicare enrollment
Enrolled (PECOS I20241217001831); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest registered dietitian records → All 7,148 in California → Look up another NPI →

Also registered at 600 Coffee RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Abulaiti Adili, M.D.Hospitalist Physician1063839439
  2. David Adkins, MDHematology & Oncology Physician1104883644
  3. Lorenzo Aguilar, MDNeurology Physician1740481043
  4. Vaishali Ahire, M.D.Hospitalist Physician1134324262
  5. Mohammad Akmal, MDHospitalist Physician1649413667
  6. Amr Al-Bacil, MDCritical Care Medicine (Internal Medicine) Physician1538134374

Verify Rei Julienne Tan Sy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 86329219    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Bills Medicare through one group practice

  1. Sutter Valley Medical FoundationSacramento, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Rei Julienne Tan Sy among 7,148 registered dietitian records in California

Rei Julienne Tan Sy, 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 2024, is newer than 80% of them.

  • NPI issued2024 · 80% of these records are older, 13% newer
  • In a Medicare fileYes · 5% of these records are
  • In the CMS Doctors and Clinicians fileYes · 7% of these records are
  • Graduated2017 · median 2014 among the 529 with a school on file
  • Record last updated2025 · 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 Modesto → Registered Dietitian nationwide →

The 8 registered dietitian records with the nearest ZIP codes

  1. Micah Bautista, RDNModesto, CA 953551164175063
  2. Allison BoydModesto, CA 953551326234220
  3. Arun Chowdhary, MBA, RD, CDEModesto, CA 953551982129201
  4. Connor Farris, RDModesto, CA 953551225838352
  5. Megan Glass, RDModesto, CA 953551043037427
  6. Janice Hadley, R.D.Modesto, CA 953551770818510
  7. Sandra Higgs, R.D.Modesto, CA 953551447577077
  8. Carol Kraft, R.D.Modesto, CA 953551558570572

Common questions

What is Rei Julienne Tan Sy, RD's NPI number?

Rei Julienne Tan Sy, RD's National Provider Identifier (NPI) is 1477378727, issued on Nov 21, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Rei Julienne Tan Sy, RD located?

The NPPES record lists a practice address at 600 Coffee RD, Modesto, CA, 95355. Phone: (209) 550-3962. Providers update this record themselves, so call before visiting.

How can I verify Rei Julienne Tan Sy, RD's license?

NPPES lists California license number 86329219, as entered by the provider. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.