Rebecca O'Brien
Registered Dietitian · Weston, CT
Rebecca O'Brien is a registered dietitian with a practice address in Weston, Connecticut, and NPI 1134635014, issued on Dec 14, 2017. Check the license with the Connecticut board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Rebecca O'Brien
- Primary taxonomy
- Registered Dietitian 133V00000X
- Practice location
- 21 Deer Run Trl, Weston, CT 06883
- Phone
- (203) 451-4423
- Enumerated
- Dec 14, 2017
- Record last updated
- Dec 14, 2017 (not updated in 9 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest registered dietitian records → All 824 in Connecticut → Look up another NPI →
Verify Rebecca O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut 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
Rebecca O'Brien among 824 registered dietitian records in Connecticut
Rebecca O'Brien is one of 824 registered dietitian records with a practice address in Connecticut. 7% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2017, is newer than 48% of them.
- NPI issued2017 · 48% of these records are older, 50% newer
- In a Medicare fileNo · 7% of these records are
- In the CMS Doctors and Clinicians fileNo · 11% of these records are
- Record last updated2017 · 58% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 registered dietitian records list a practice address in Weston
They are 4 of the 67 NPPES records with a practice address in Weston, and 824 registered dietitian records in Connecticut. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 824 in Connecticut → Every provider in Weston → Registered Dietitian nationwide →
The 8 registered dietitian records with the nearest ZIP codes
- Esther Blum, MS,RD,CDN,CNSWeston, CT 068831902493729
- Melaina Marion, RDNWeston, CT 068831265087365
- Karen YungWeston, CT 068831689392383
- Sarah Becker, MS, RDWestport, CT 068801811617376
- Victoria Dibiasi, MS, RDWestport, CT 068801174151443
- Annaliese Difabbio, RDWestport, CT 068801457941312
- Caroline DriesmanWestport, CT 068801023728326
- Meredith Fidel, RDNWestport, CT 068801467278333
Common questions
What is Rebecca O'Brien's NPI number?
Rebecca O'Brien's National Provider Identifier (NPI) is 1134635014, issued on Dec 14, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Rebecca O'Brien located?
The NPPES record lists a practice address at 21 Deer Run Trl, Weston, CT, 06883. Phone: (203) 451-4423. Providers update this record themselves, so call before visiting.
How can I verify Rebecca O'Brien's license?
Search the Connecticut 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. 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.