Roberta Ritter Spier, RDN
Registered Dietitian · Palo Alto, CA
Roberta Ritter Spier, RDN is a registered dietitian with a practice address in Palo Alto, California, and NPI 1871085449, issued on May 30, 2018. Check the license (California 86066331, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Roberta Ritter Spier
- Credential
- RDN
- Primary taxonomy
- Registered Dietitian 133V00000X
- License number
- 86066331 CA
Self-reported in NPPES; status is on the state search - Practice location
- 795 EL Camino Real, Palo Alto, CA 94301
- Phone
- (650) 853-2961
- Enumerated
- May 30, 2018
- Record last updated
- Jun 12, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180827003512); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest registered dietitian records → All 7,148 in California → Look up another NPI →
Also registered at 795 EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Roberta Ritter Spier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 86066331Check 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
- Sutter Bay Medical FoundationLos Altos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Roberta Ritter Spier among 7,148 registered dietitian records in California
Roberta Ritter Spier, RDN 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 2018, is newer than 46% of them.
- NPI issued2018 · 46% of these records are older, 50% 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 updated2020 · 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).
120 registered dietitian records list a practice address in Palo Alto
They are 120 of the 7,617 NPPES records with a practice address in Palo Alto, and 7,148 registered dietitian records in California.
All 7,148 in California → Every provider in Palo Alto → Registered Dietitian nationwide →
The 8 registered dietitian records with the nearest ZIP codes
- Karen Astrachan, RD, CDEPalo Alto, CA 943011174612386
- Darcie Ellyne, RDPalo Alto, CA 943011447326020
- Susan Hall, RDPalo Alto, CA 943011982762191
- Shauna Hyde, RDPalo Alto, CA 943011689817033
- Talya Kurzion, RDPalo Alto, CA 943011184970352
- Andrea Lerios, RDPalo Alto, CA 943011720293764
- Erica Lewis, RDPalo Alto, CA 943011154521524
- Geetha Rao, RDPalo Alto, CA 943011407930647
Common questions
What is Roberta Ritter Spier, RDN's NPI number?
Roberta Ritter Spier, RDN's National Provider Identifier (NPI) is 1871085449, issued on May 30, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Roberta Ritter Spier, RDN located?
The NPPES record lists a practice address at 795 EL Camino Real, Palo Alto, CA, 94301. Phone: (650) 853-2961. Providers update this record themselves, so call before visiting.
How can I verify Roberta Ritter Spier, RDN's license?
NPPES lists California license number 86066331, 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.
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.