Crystal Marie Hayes, RD
Registered Dietitian · Pittsburg, CA
Crystal Marie Hayes, RD is a registered dietitian with a practice address in Pittsburg, California, and NPI 1609402601, issued on Mar 21, 2020. Check the license (California 86087639, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Crystal Marie Hayes
- Credential
- RD
- Primary taxonomy
- Registered Dietitian 133V00000X
- License numbers
- 86087639 CA
86087639 OR
Self-reported in NPPES; status is on the state search - Practice location
- 18 Petar LN, Pittsburg, CA 94565
- Phone
- (925) 330-1010
- Enumerated
- Mar 21, 2020
- Record last updated
- Oct 5, 2023
- Medicare enrollment
- Enrolled (PECOS I20231010000355); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest registered dietitian records → All 7,148 in California → Look up another NPI →
Verify Crystal Marie Hayes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 86087639Check 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 MateoSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Crystal Marie Hayes among 7,148 registered dietitian records in California
Crystal Marie Hayes, 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 2020, is newer than 55% of them.
- NPI issued2020 · 55% of these records are older, 39% newer
- In a Medicare fileYes · 5% of these records are
- In the CMS Doctors and Clinicians fileYes · 7% of these records are
- Graduated2019 · median 2014 among the 529 with a school on file
- Record last updated2023 · 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 Pittsburg → Registered Dietitian nationwide →
The 8 registered dietitian records with the nearest ZIP codes
- John Patrick Canlas, RDNBay Point, CA 945651639760762
- Yolanda RodriguezPittsburg, CA 945651548530363
- Kathy Armani, RDNPleasanton, CA 945661376867341
- Nader ArmaniosPleasanton, CA 945661457704686
- Jill Daniels, MS, RD, CSSDPleasanton, CA 945661508153610
- Praveena Kumar, RDPinole, CA 945641841768652
- Anne Moselle, MS, RDPleasanton, CA 945661306490784
- Chandni Sen SinhaPleasanton, CA 945661972302198
Common questions
What is Crystal Marie Hayes, RD's NPI number?
Crystal Marie Hayes, RD's National Provider Identifier (NPI) is 1609402601, issued on Mar 21, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Crystal Marie Hayes, RD located?
The NPPES record lists a practice address at 18 Petar LN, Pittsburg, CA, 94565. Phone: (925) 330-1010. Providers update this record themselves, so call before visiting.
How can I verify Crystal Marie Hayes, RD's license?
NPPES lists California license number 86087639, 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.